Unable to do Action into JSP
Hi ..
I have a jsp which contains an applet...
The Applet contains one Button Which perform some action.. This Action Works fine independetly ie if i run that program alone i am able to do action...
I am unable to perform that action after plugin that applet into my JSP page..
How can i do that action ..
Thanks for your attention!
When you say an applet, do you really mean an applet, that is a program embedded in a web page? Or do you just mean a small program?
Can you run the applet successfully when the HTML page is plain HTML, not generated by JSP?
What file are you reading? A file on the local hard drive? A file on the server?
When you say you're "unable to do that action" -- do you mean that you just don't know how to do it? Or that you tried, and you can't compile the code? If so, what error messages do you get? Or do you mean that you can compile the code, but it doesn't work? If so, do you get error messages? If so what are they? What is the applet doing that you know is wrong?
Similar Messages
-
Unable to compile class for JSP. package not found
Hello folks,
I was trying to build a simple web application using Eclipse IDE, tomcat 5.x server and ant to build and deploy the application.
I referenced the following tutorial:
http://www.onjava.com/pub/a/onjava/2003/01/08/tomcat4.html
I was able to create a war file, deploy it in tomcat. When i invoke a simple jsp it works fine. However if I try to import any source pkg into jsp it throws error. Below is stack trace.
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
C:\tomcat\work\Catalina\localhost\aweb\org\apache\jsp\web\Home_jsp.java:6:
package com.ak.test does not exist
import com.ak.test.*;
^
1 error
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:412)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056)
org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:261)
org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:994)
org.apache.struts.tiles.TilesRequestProcessor.internalModuleRelativeForward(TilesRequestProcessor.java:343)
org.apache.struts.action.RequestProcessor.processForward(RequestProcessor.java:553)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:211)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Any clue what is the issue?Additional Info:
Location of files
==================
My jsp file is located at:
C:\eclipse\workspace\aweb\web\Home.jsp
my class is located in:
C:\eclipse\workspace\aweb\WEB-INF\classes\com\ak\test
Webapplication Dir Structure:C:\eclipse\workspace:
aweb(webapplication name)
+web
-----+Home.jsp
+src
------+com.ak.test.MyJava.java
+WEB-INF
------+Classes
--------+com.ak.test.MyJava.class
------+lib
----------struts.jar
------+web.xml
------+struts-config.xml
-aweb.war(build.xml creates war file as per WAR format)
Ant task which installs the webapplication in Tomcat:
<target name="install" description="Installs the Web Application" depends="package">
<echo message="Installing ${app.name} ..."/>
<install url="${manager.url}" username="${username}" password="${password}" path="/${app.name}"
config="file:${basedir}/war/META-INF/context.xml" war="file:${basedir}/${app.name}.war"/>
</target>
build.properties file
app.name=aweb
manager.url=http://localhost:8080/manager
tomcat.home=C:/tomcat
username=user
password=user
Contents of the jsp file
=======================
<%@ page import="com.ak.test.MyJava" %>
<html>
<head>
<title>Home Page</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
</body>
</html> -
Unable to compile class for JSP
Please can anyone help me to solve this.
Actually,this is the condition.
In my db,there is a table called UserPassword, which has 4
fields(empNo,UserName,password,level). Now I want to do these things:
When the user submits the data to create a new account via HTML form, it submits the data to the file called CreateAcc.jsp. In this file it perform some logic,here are they.
1)To check the empNo,if it is already exist in the DB,
if empNo =exist then display error.(record already exist)
if empNo =notexist then do task 2).
2)check the UserName,if it is already exist in the db,
if UserName=exist then display error.(because it's a primary key)
if UserName=notexist then do task 3).
3)Create a new user account and save it to the db.
To do these tasks,I never create a new objects for the tasks 1) and 2).
only for task 3)create an object.
Is it the right way?
Here is the file CreateAcc.jsp
<%@ page language="java" %>
<%@ page import="core.UserAccManager" %>
<%@ page import="data.UserPassword" %>
<jsp:useBean id="UserAccManager" class="core.UserAccManager" scope="session"/>
<jsp:setProperty name="UserAccManager" property="*"/>
<jsp:useBean id="UserPassword" class="data.UserPassword" scope="session"/>
<jsp:setProperty name="UserPassword" property="*"/>
<%
String nextPage ="MainForm.jsp";
if(UserPassword.verifyEmpno()){
if(UserPassword.verifyUsername()){
if(UserPassword.createAcc()) nextPage ="MsgAcc.jsp";
}else{
nextPage="UserNameExist.jsp";
else{
nextPage="UserAccError.jsp";
%>
<jsp:forward page="<%=nextPage%>"/>The directory structure:
UserPassword.java- F:/Project/core/data/UserPassword.java
UserAccManager.java - F:/Project/core/UserAccManager.java
Now both are compiling.I put the class files into the TOMCAT,as follows.
UserAccManager.class - webapps/mySystemName/WEB-INF/classes/core/
UserPassword.class - webapps/mySystemName/WEB-INF/classes/core/data/
Here is the full code of the file UserAccManager.java.
package core; //Is this right?
import data.UserPassword; //Is this right?
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public final class UserAccManager{
private static final String DRIVER = "com.mysql.jdbc.Driver";
private static final String URL = "jdbc:mysql://localhost:3306/superfine";
private static Connection connection;
private static PreparedStatement pstmt1;
private static PreparedStatement pstmt2;
private static PreparedStatement pstmt3;
private UserAccManager(){
// Initializes the connection and statements
public static void initConnection() {
if (connection == null) {
try {
String sql;
// Open the database
Class.forName(DRIVER).newInstance();
connection = DriverManager.getConnection(URL);
// Prepare the statements
sql = "SELECT * FROM UserPassword where empNo= ?";
pstmt1 = connection.prepareStatement(sql);
sql = "SELECT UserName FROM UserPassword where UserName= ?";
pstmt2 = connection.prepareStatement(sql);
sql ="INSERT INTO UserPassword VALUES(?,?,?,?)";
pstmt3 = connection.prepareStatement(sql);
catch (Exception ex) {
System.err.println(ex.getMessage());
// Closes the connection and statements
// Method to be called by main class when finished with DB
public void closeConnection() {
//same as previous
public static boolean verifyEmpno(int empno) {
boolean emp_no_select_ok = false;
int emp = -1;
initConnection();
try {
pstmt1.setInt(1, empno);
ResultSet rs1 = pstmt1.executeQuery();
while(rs1.next()){
emp=rs1.getInt("empNo");
if(emp>0)
emp_no_select_ok = false;
} else{
emp_no_select_ok = true;
rs1.close();
pstmt1.close();
catch (Exception ex) {
System.err.println(ex.getMessage());
return emp_no_select_ok;
public static boolean verifyUsername(String username) {
boolean user_name_select_ok = false;
String user = "xxxx";
initConnection();
try {
pstmt2.setString(1, username);
ResultSet rs2 = pstmt2.executeQuery();
while(rs2.next()){
user=rs2.getString("UserName");
if(!user.equals("xxxx"))
user_name_select_ok = false;
} else{
user_name_select_ok = true;
rs2.close();
catch (Exception ex) {
System.err.println(ex.getMessage());
return user_name_select_ok;
public static boolean createAcc(int empno, String username, String password, int
level){
boolean create_acc_ok = false;
initConnection();
try{
//create a new object,from the UserPassword table.
UserPassword useraccount = new UserPassword();
useraccount.setEmpno(empno);
useraccount.setUsername(username);
useraccount.setPassword(password);
useraccount.setLevel(level);
//assign value for ???
pstmt3.setInt(1, useraccount.getEmpno());
pstmt3.setString(2, useraccount.getUsername());
pstmt3.setString(3, useraccount.getPassword());
pstmt3.setInt(4, useraccount.getLevel());
if(pstmt3.executeUpdate()==1) create_acc_ok=true;
pstmt3.close();
//con.close();
catch(SQLException e2){
System.err.println(e2.getMessage());
return create_acc_ok;
}here is the bean (part of it)
package data; //is it right?
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class UserPassword
private int empno;
private String username;
private String password;
private int level;
// Constructor
public UserPassword()
this.empno = empno;
this.username = username;
this.password = password;
this.level = level;
// setters and getters are here.
// public boolean verifyEmpno() {
// return UserAccManager.verifyEmpno(empno);
// public boolean verifyUsername(String username) {
// return UserAccManager.verifyUsername(username);
// These 2 methods not compile with or without para's.So I leave that job for the
//controll class UserAccManager.java.
Now my problem is this: When I submit data, there is an error;org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:8:
cannot access core.data.UserPassword
bad class file: C:\Program Files\Apache Group\Tomcat
4.1\webapps\HRM\WEB-INF\classes\core\data\UserPassword.class
class file contains wrong class: data.UserPassword
Please remove or make sure it appears in the correct subdirectory of the classpath.
import core.data.UserPassword;
^
1 error
Are there any mistakes? If so tell me where is it and how to change them.Please help.I try it that way, but it don't compile.
Error:core\data\UserPassword.java:package javax.servlet does not exist
import javax.servlet.*;
core\data\UserPassword.java:package javax.servlet.http does not exist
import javax.servlet.http.*;
So,I comment them only in the UserPassword.java file,and compile it again.
Then it compile well.I goto the directory to get the .class files.
But there is only UserPassword.class inside the data folder. There is not
UserAccManager.class in the core folder.
Then I try this way,I put my 2 java files in to a new folder,
F:\SystemName\com
When I try it that way, but it don't compile.
javac -classpath . -d . com\*.javaError:com\UserPassword.java:package javax.servlet does not exist
import javax.servlet.*;
com\UserPassword.java:package javax.servlet.http does not exist
import javax.servlet.http.*;
So,I comment them only in the UserPassword.java file,and compile it again.
Now both are compiling well.There was 2 class files.
I put them in to the WEB-INF/classes/com directory.
Start the server.But it gave errors:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:68: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
if(UserPassword.verifyEmpno(empno)){
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.verifyUsername(username)){
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: non-static method
verifyUsername(java.lang.String) cannot be referenced from a static context
if(UserAccManager.verifyUsername(username)){
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable password
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable level
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: non-static method
createAcc(int,java.lang.String,java.lang.String,int) cannot be referenced from a static
context
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
8 errorsTo solve the problem non-static method,I goto the UserAccManager.java file and do these
things.
package com;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
//import javax.servlet.*; //otherwise it tells an error.(package
//javax.servlet does not exist)
//import javax.servlet.http.*;
public class UserAccManager {
private static final String DRIVER = "com.mysql.jdbc.Driver";
private static final String URL = "jdbc:mysql://localhost:3306/superfine";
private static Connection connection;
private static PreparedStatement pstmt1;
private static PreparedStatement pstmt2;
private static PreparedStatement pstmt3;
private UserAccManager() {
// Initializes the connection and statements
private static void initConnection() {
//same
// Closes the connection and statements
// Method to be called by main class when finished with DB
public static void closeConnection() {
//same
public static boolean verifyEmpno(int empno) {
// same.
public static boolean verifyUsername(String username) {
//same.
public static boolean createAcc(int empno, String username, String password, int
level){
//same
package com;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.sql.*;
//import javax.servlet.*;
//import javax.servlet.http.*;
public class UserPassword {
// same
Again compile those files and put .class filses into the WEB-INF/classes/com directory.
When i submits the data via the form it generates an error:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
[javac] Compiling 1 source file
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:68: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.verifyEmpno(empno)){
^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:69: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.verifyUsername(username)){
^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable empno
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable username
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable password
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
An error occurred at line: 9 in the jsp file: /CreateAcc.jsp
Generated servlet error:
C:\Program Files\Apache Group\Tomcat
4.1\work\Standalone\localhost\HRM\CreateAcc_jsp.java:70: cannot resolve symbol
symbol : variable level
location: class org.apache.jsp.CreateAcc_jsp
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
^
6 errorshere is the CreateAcc.jsp file
<%@ page language="java" %>
<%@ page import="com.UserAccManager" %>
<%@ page import="com.UserPassword" %>
<jsp:useBean id="userPassword" class="com.UserPassword" scope="request"/>
<jsp:setProperty name="userPassword" property="*" />
<%
String nextPage ="MainForm.jsp";
if(UserAccManager.verifyEmpno(empno)){
if(UserAccManager.verifyUsername(username)){
if(UserAccManager.createAcc(empno, username,password,level)) nextPage
="MsgAcc.jsp";
}else{
nextPage="UserNameExist.jsp";
else{
nextPage="UserAccError.jsp";
%>
<jsp:forward page="<%=nextPage%>"/>Please, anyone know how to send these parameters to the java file.
Thanks. -
Hi,
I am trying to import a class into my JSP and am getting the following error at runtime:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
[javac] D:\jwsdp-1.2\work\Catalina\localhost\pe\org\apache\jsp\guestbook_jsp.java:7: '.' expected
[javac] import MessageGetter;
My import statement in the JSP is simply:
<%@ page import="MessageGetter" %>
and I am placing the class in the WEB-INF/classes directory. This is stumping me - if you've come across this or a similar problem, please let me know. Thanks.
PTry posting your question in the JSP forum (http://forum.java.sun.com/forum.jsp?forum=45)
cheers,
Mike -
Unable to compile class for JSP. apache-tomcat-6. What could be wrong?
Hello, I am new to JSP and I am trying a very basic jsp and class file on Windows XP. I get the Unable to compile class for JSP.
Steps that I have done:
javac ch06_01.java , placed the ch06_01.class under
C:\Apps\apache-tomcat-6.0.16\webapps\ch06\WEB-INF\classes
Then grabbed the ch06_02.jsp and placed it under
C:\Apps\apache-tomcat-6.0.16\webapps\ch06\
When I run it (by placing this into Explorer or Firefox URL
http://localhost:8080/ch06/ch06_02.jsp) I get the error further
below. Things I have done and made sure they are in place are:
set up JAVA_HOME to C:\Apps\jdk1.6.0_06
Using CATALINA_BASE: C:\Apps\apache-tomcat-6.0.16
Using CATALINA_HOME: C:\Apps\apache-tomcat-6.0.16
Using CATALINA_TMPDIR: C:\Apps\apache-tomcat-6.0.16\temp
Using JRE_HOME: C:\Apps\jre1.6.0_06
I did a google on the error and I found people saying to place the
tools.jar from the jsk into the lib directory under CATALINA_HOME. But
the examples still don't work. What step could I be missing? Your help is greatly
appreciated.
This is the simple jsp file:
<%@ page import="ch06_01" %>
<HTML>
<HEAD>
<TITLE>Using a JavaBean</TITLE>
</HEAD>
<BODY>
<H1>Using a JavaBean</H1>
<% ch06_01 messager = new ch06_01(); %>
The message is: <%= messager.msg() %>
</BODY>
</HTML>
this is the simple ch6_01 java file:
public class ch06_01
public ch06_01()
public String msg()
return "Hello from JSP!";
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented
it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
The import ch06_01 cannot be resolved
An error occurred at line: 9 in the jsp file: /ch06_02.jsp
ch06_01 cannot be resolved to a type
6: <BODY>
7: <H1>Using a JavaBean</H1>
8:
9: <% ch06_01 messager = new ch06_01(); %>
10:
11: The message is: <%= messager.msg() %>
12:
An error occurred at line: 9 in the jsp file: /ch06_02.jsp
ch06_01 cannot be resolved to a type
6: <BODY>
7: <H1>Using a JavaBean</H1>
8:
9: <% ch06_01 messager = new ch06_01(); %>
10:
11: The message is: <%= messager.msg() %>
12:
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:316)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
Edited by: indikon1 on Jun 12, 2008 1:18 PM
I just updated the directories of the variables to reflect the current status of my system.What is wrong is that you are using an "old" jsp tutorial :-)
Since Java 1.4, JSPs have been unable to access classes in the "default" package.
What you need to do:
Put the java class ch06_01 in a package.
Steps to do this
- Edit ch06_01 and add the following to the very top of the file (without the quotes): "package mypackage;"
- create a folder "mypackage"
- move ch06_01.java into that folder
- compile that class (now in the mypackage package)
- place ch06_01.class under C:\Apps\apache-tomcat-6.0.16\webapps\ch06\WEB-INF\classes\mypackage
In your jsp:
<%@ page import="mypackage.ch06_01" %>
I would suggest using a more up-to-date tutorial that uses JSTL.
Take a look at this [Apache Tomcat tutorial|http://www.coreservlets.com/Apache-Tomcat-Tutorial/index.html] -
Unable to compil class for jsp
error is
HTTP Status 500 -
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 6 in the generated java file
Syntax error on token ".", Identifier expected after this token
An error occurred at line: 7 in the generated java file
Syntax error on token ".", Identifier expected after this token
An error occurred at line: 9 in the jsp file: /travel/issue.jsp
LibraryStudent cannot be resolved to a type
6: <BODY>
7: <H1>issue books</H1>
8: <CENTER>
9: <jsp:useBean id="student"
10: type="LibraryStudent"
11: scope="session" />
12: student name:
An error occurred at line: 9 in the jsp file: /travel/issue.jsp
LibraryStudent cannot be resolved to a type
6: <BODY>
7: <H1>issue books</H1>
8: <CENTER>
9: <jsp:useBean id="student"
10: type="LibraryStudent"
11: scope="session" />
12: student name:
An error occurred at line: 13 in the jsp file: /travel/issue.jsp
LibraryStudent cannot be resolved to a type
10: type="LibraryStudent"
11: scope="session" />
12: student name:
13: <jsp:getProperty name="student" property="studentName" />
14:
15: book name:
16: <jsp:getProperty name="student" property="bookName" />
An error occurred at line: 16 in the jsp file: /travel/issue.jsp
LibraryStudent cannot be resolved to a type
13: <jsp:getProperty name="student" property="studentName" />
14:
15: book name:
16: <jsp:getProperty name="student" property="bookName" />
17:
18: <jsp:getProperty name="student"
19: property="issueData" />
An error occurred at line: 18 in the jsp file: /travel/issue.jsp
LibraryStudent cannot be resolved to a type
15: book name:
16: <jsp:getProperty name="student" property="bookName" />
17:
18: <jsp:getProperty name="student"
19: property="issueData" />
20: </FORM>
21: </CENTER>LibraryStudent.java is
import java.util.*;
import java.text.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.*;
public class LibraryStudent {
private String emailAddress, s,password, sname,bname;
private String date,value;
public String getStudentName() {
return(sname);
public void setStudentName(String sname) {
this.sname = sname;
public String getEmailAddress() {
return(emailAddress);
public void setEmailAddress(String emailAddress) {
this.emailAddress = emailAddress;
public String getPassword() {
return(password);
public void setPassword(String password) {
this.password = password;
public String getBookName() {
return(bname);
public void setBookName(String bname) {
this.bname = bname;
public String getDate() {
return(date);
public void setDate(String date) {
this.date = date;
public String getIssueData() //method that create connection withh database
throws ServletException,IOException{
try{
getDate(); //and add a entry in database
getBookName();
getStudentName();
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:db2");
Statement st=con.createStatement();
String sql =
"insert into table1 (bookname,studentname,date) values(bname,sname,date)";
st.executeUpdate(sql);
System.out.println(sql);
String s= "your book has been issued ";
return(s);
catch(Exception e)
e.printStackTrace();
return "failed";
public String getSumbitData()
throws ServletException,IOException{
try
getBookName();
getStudentName();
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:db2");
Statement st=con.createStatement();
String sql =
"delete from db2 where bookname='bname' and studentname=sname";
st.executeUpdate(sql);
System.out.println(sql);
String s="your book has been sumbitted ";
return(s) ;
catch(Exception e)
e.printStackTrace();
return "failed";
public static int findStudent //to validate customer
(String emailAddress,
String password) throws ServletException,IOException{
try
if (emailAddress == null) {
return(0);
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection con=DriverManager.getConnection("jdbc:odbc:user");
Statement st=con.createStatement();
String sql="select * from user where name='"+emailAddress+"' and password='"+password+"'";
System.out.println(sql);
ResultSet rs=st.executeQuery(sql);
if(rs.next())
return(1);
else
return(0);
}catch(Exception e)
e.printStackTrace();
return (0);}
to be continued.............and Library.java is import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Library extends HttpServlet {
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
String emailAddress = request.getParameter("emailAddress");//use to email&pass
String password = request.getParameter("password");//from html page
LibraryStudent student = new LibraryStudent();//Make a student Object
int a=LibraryStudent.findStudent(emailAddress, password);//to validate student
if (a==0) {
gotoPage("/library/accounts.jsp", request, response);
else
student.setStudentName(request.getParameter("sname"));//use to sent other textbox
student.setBookName(request.getParameter("bname"));//data in librarystudent
student.setDate(request.getParameter("date"));//class after validation
HttpSession session = request.getSession(true);
session.putValue("student", student);
//for moving different page
if (request.getParameter("issue") != null) {
gotoPage("/travel/issue.jsp",
request, response);
} else if (request.getParameter("sumbit") != null) {
gotoPage("/travel/sumbit.jsp",
request, response);
} else if (request.getParameter("search") != null) {
gotoPage("/travel/search.jsp",
request, response);
} else if (request.getParameter("account") != null) {
gotoPage("/travel/EditAccounts.jsp",
request, response);
} else {
gotoPage("/travel/IllegalRequest.jsp",
request, response);
private void gotoPage(String address,
HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
RequestDispatcher dispatcher =
getServletContext().getRequestDispatcher(address);
dispatcher.forward(request, response);
} issue.jsp is
<%@page import="java.io.,java.util.,java.sql.*"%>
<HTML>
<HEAD>
<TITLE>issue books</TITLE>
</HEAD>
<BODY>
<H1>issue books</H1>
<CENTER>
<jsp:useBean id="student"
type="LibraryStudent"
scope="session" />
student name:
<jsp:getProperty name="student" property="studentName" />
book name:
<jsp:getProperty name="student" property="bookName" />
<jsp:getProperty name="student"
property="issueData" />
</FORM>
</CENTER>
</BODY>
</HTML> plz solve my problem .i m new to servlet and jsp and i have keen desire to learn this topic -
Unable to compile class for JSP--- help me plz!!!!!
hi friends;
Pease suggest me where i am wrong, i think javabean is not instantiated in jsp file.may be it is related to the classpath of javabean. i have not set any variable for javabean classpath. and i put javabean class file in
TOMCAT_HOME/webapps/test3/WEB-INF/UseDta.class
and all the jsp and html in /test3. my jsp an javabeans are--
1. GetName.html
<HTML>
<BODY>
<FORM METHOD=POST ACTION="SaveName.jsp">
What's your name? <INPUT TYPE=TEXT NAME=username SIZE=20><BR>
What's your e-mail address? <INPUT TYPE=TEXT NAME=email SIZE=20><BR>
What's your age? <INPUT TYPE=TEXT NAME=age SIZE=4>
<P><INPUT TYPE=SUBMIT>
</FORM>
</BODY>
</HTML>
2. SaveName.jsp
<jsp:useBean id="user" class="UserData" scope="session">
<jsp:setProperty name="user" property="*"/>
</jsp:useBean>
<HTML>
<BODY>
Continue
</BODY>
</HTML>
3. UserData.java
public class UserData {
String username;
String email;
int age;
public UserData(){}
public void setUsername( String value )
username = value;
public void setEmail( String value )
email = value;
public void setAge( int value )
age = value;
public String getUsername() { return username; }
public String getEmail() { return email; }
public int getAge() { return age; }
4. NextPage.jsp
<jsp:useBean id="user" class="UserData" scope="session"/>
<HTML>
<BODY>
You entered<BR>
Name: <%= user.getUsername() %><BR>
Email: <%= user.getEmail() %><BR>
Age: <%= user.getAge() %><BR>
</BODY>
</HTML>
url: http://localhost:8080/test3/GetName.html
is it related to context path??
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 2 in the jsp file: /SaveName.jsp
Generated servlet error:
C:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\test3\org\apache\jsp\SaveName_jsp.java:44: cannot find symbol
symbol : class UserData
location: class org.apache.jsp.SaveName_jsp
UserData user = null;
^
An error occurred at line: 2 in the jsp file: /SaveName.jsp
Generated servlet error:
C:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\test3\org\apache\jsp\SaveName_jsp.java:46: cannot find symbol
symbol : class UserData
location: class org.apache.jsp.SaveName_jsp
user = (UserData) jspxpage_context.getAttribute("user", PageContext.SESSION_SCOPE);
^
An error occurred at line: 2 in the jsp file: /SaveName.jsp
Generated servlet error:
C:\Program Files\Apache Software Foundation\Tomcat 5.0\work\Catalina\localhost\test3\org\apache\jsp\SaveName_jsp.java:48: cannot find symbol
symbol : class UserData
location: class org.apache.jsp.SaveName_jsp
user = new UserData();
^
3 errors
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:332)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:437)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:497)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:476)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:464)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.30 logs.
Apache Tomcat/5.0.30
please Reply me ASAP
i'll be glad if you reply. pleaseI am using Tomcat 6.0.
I have put my UserData class in user package and
used in below jsp(SaveName.jsp)
<%@ page import="user.UserData" %>
<jsp:useBean id="user" class="user.UserData" scope="session"/>
<jsp:setProperty name="user" property="*"/>
<HTML>
<BODY>
Continue
</BODY>
</HTML>
I have already set my classpath as C:\Documents and Settings\user\My Documents\Java\apache-tomcat-6.0.16\apache-tomcat-6.0.16\webapps\ROOT\WEB-INF\classes;
UserData class is in C:\Documents and Settings\user\My Documents\Java\apache-tomcat-6.0.16\apache-tomcat-6.0.16\webapps\ROOT\WEB-INF\classes\user
My UserData class is
package user;
public class UserData {
String username;
String email;
int age;
public UserData(){
this("","",0);
System.out.println("najn thanne puli");
public UserData(String username,String email,int age){
this.username=username;
this.email=email;
this.age=age;
public void setUsername( String value )
username = value;
public void setEmail( String value )
email = value;
public void setAge( int value )
age = value;
public String getUsername() { return username; }
public String getEmail() { return email; }
public int getAge() { return age; }
But running SaveName.jsp shows exception
org.apache.jasper.JasperException: /SaveName.jsp(2,0) The value for the useBean class attribute user.UserData is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1200)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1160)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2343)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2393)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2399)
org.apache.jasper.compiler.Node$Root.accept(Node.java:489)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2343)
org.apache.jasper.compiler.Generator.generate(Generator.java:3372)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:198)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
Please help me.thanks in advance. -
How to convert this Servlet into JSP
I am trying to convert this Servlet into JSP page.
How do I go about doing this?
Thanks.
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;
import java.text.*;
/** Shows all items currently in ShoppingCart. Clients
* have their own session that keeps track of which
* ShoppingCart is theirs. If this is their first visit
* to the order page, a new shopping cart is created.
* Usually, people come to this page by way of a page
* showing catalog entries, so this page adds an additional
* item to the shopping cart. But users can also
* bookmark this page, access it from their history list,
* or be sent back to it by clicking on the "Update Order"
* button after changing the number of items ordered.
* <P>
* Taken from Core Servlets and JavaServer Pages 2nd Edition
* from Prentice Hall and Sun Microsystems Press,
* http://www.coreservlets.com/.
* © 2003 Marty Hall; may be freely used or adapted.
public class OrderPage extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
HttpSession session = request.getSession();
ShoppingCart cart;
synchronized(session) {
cart = (ShoppingCart)session.getAttribute("shoppingCart");
// New visitors get a fresh shopping cart.
// Previous visitors keep using their existing cart.
if (cart == null) {
cart = new ShoppingCart();
session.setAttribute("shoppingCart", cart);
String itemID = request.getParameter("itemID");
if (itemID != null) {
String numItemsString =
request.getParameter("numItems");
if (numItemsString == null) {
// If request specified an ID but no number,
// then customers came here via an "Add Item to Cart"
// button on a catalog page.
cart.addItem(itemID);
} else {
// If request specified an ID and number, then
// customers came here via an "Update Order" button
// after changing the number of items in order.
// Note that specifying a number of 0 results
// in item being deleted from cart.
int numItems;
try {
numItems = Integer.parseInt(numItemsString);
} catch(NumberFormatException nfe) {
numItems = 1;
cart.setNumOrdered(itemID, numItems);
// Whether or not the customer changed the order, show
// order status.
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "Status of Your Order";
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>");
synchronized(session) {
List itemsOrdered = cart.getItemsOrdered();
if (itemsOrdered.size() == 0) {
out.println("<H2><I>No items in your cart...</I></H2>");
} else {
// If there is at least one item in cart, show table
// of items ordered.
out.println
("<TABLE BORDER=1 ALIGN=\"CENTER\">\n" +
"<TR BGCOLOR=\"#FFAD00\">\n" +
" <TH>Item ID<TH>Description\n" +
" <TH>Unit Cost<TH>Number<TH>Total Cost");
ItemOrder order;
// Rounds to two decimal places, inserts dollar
// sign (or other currency symbol), etc., as
// appropriate in current Locale.
NumberFormat formatter =
NumberFormat.getCurrencyInstance();
// For each entry in shopping cart, make
// table row showing ID, description, per-item
// cost, number ordered, and total cost.
// Put number ordered in textfield that user
// can change, with "Update Order" button next
// to it, which resubmits to this same page
// but specifying a different number of items.
for(int i=0; i<itemsOrdered.size(); i++) {
order = (ItemOrder)itemsOrdered.get(i);
out.println
("<TR>\n" +
" <TD>" + order.getItemID() + "\n" +
" <TD>" + order.getShortDescription() + "\n" +
" <TD>" +
formatter.format(order.getUnitCost()) + "\n" +
" <TD>" +
"<FORM>\n" + // Submit to current URL
"<INPUT TYPE=\"HIDDEN\" NAME=\"itemID\"\n" +
" VALUE=\"" + order.getItemID() + "\">\n" +
"<INPUT TYPE=\"TEXT\" NAME=\"numItems\"\n" +
" SIZE=3 VALUE=\"" +
order.getNumItems() + "\">\n" +
"<SMALL>\n" +
"<INPUT TYPE=\"SUBMIT\"\n "+
" VALUE=\"Update Order\">\n" +
"</SMALL>\n" +
"</FORM>\n" +
" <TD>" +
formatter.format(order.getTotalCost()));
String checkoutURL =
response.encodeURL("../Checkout.html");
// "Proceed to Checkout" button below table
out.println
("</TABLE>\n" +
"<FORM ACTION=\"" + checkoutURL + "\">\n" +
"<BIG><CENTER>\n" +
"<INPUT TYPE=\"SUBMIT\"\n" +
" VALUE=\"Proceed to Checkout\">\n" +
"</CENTER></BIG></FORM>");
out.println("</BODY></HTML>");
}Sorry.
actually this is my coding on the bottom.
Pleease disregard my previous coding. I got the different one.
My first approach is using <% %> around the whole doGet method such as:
<%
String[] ids = { "hall001", "hall002" };
setItems(ids);
setTitle("All-Time Best Computer Books");
out.println("<HR>\n</BODY></HTML>");
%>
I am not sure how to break between code between
return;
and
response.setContentType("text/html");
Here is my coding:
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
String[] ids = { "hall001", "hall002" };
setItems(ids);
setTitle("All-Time Best Computer Books");
if (items == null) {
response.sendError(response.SC_NOT_FOUND,
"Missing Items.");
return;
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
out.println(docType +
"<HTML>\n" +
"<HEAD><TITLE>" + title + "</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=\"CENTER\">" + title + "</H1>");
CatalogItem item;
for(int i=0; i<items.length; i++) {
out.println("<HR>");
item = items;
if (item == null) {
out.println("<FONT COLOR=\"RED\">" +
"Unknown item ID " + itemIDs[i] +
"</FONT>");
} else {
out.println();
String formURL =
"/servlet/coreservlets.OrderPage";
formURL = response.encodeURL(formURL);
out.println
("<FORM ACTION=\"" + formURL + "\">\n" +
"<INPUT TYPE=\"HIDDEN\" NAME=\"itemID\" " +
" VALUE=\"" + item.getItemID() + "\">\n" +
"<H2>" + item.getShortDescription() +
" ($" + item.getCost() + ")</H2>\n" +
item.getLongDescription() + "\n" +
"<P>\n<CENTER>\n" +
"<INPUT TYPE=\"SUBMIT\" " +
"VALUE=\"Add to Shopping Cart\">\n" +
"</CENTER>\n<P>\n</FORM>");
out.println("<HR>\n</BODY></HTML>"); -
JasperException: Unable to compile class for JSP HELP
I added couple of extra class files into the jar file.. and now its not able to find it! I am running JBoss latest version and using eclipse... any help wud be nice
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
Only a type can be imported. org.jfree.chart.servlet.WebHitChart resolves to a package
Generated servlet error:
Only a type can be imported. org.jfree.chart.servlet.WebHitDataSet resolves to a package
An error occurred at line: 10 in the jsp file: /bar_chart.jsp
Generated servlet error:
WebHitChart cannot be resolved
An error occurred at line: 10 in the jsp file: /bar_chart.jsp
Generated servlet error:
WebHitDataSet cannot be resolved
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:397)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:293)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)just a random guess...
I had a ton of issues with JBoss and jfreechart. JBoss uses a different classloader, and its internal versions of the jfreechart classes will be loaded before yours, causing all sorts of issues. Dig through the jboss directories and you'll find a different, older version of jfreechart of one of its classes. Remove them and you'll be in better shape.
Alternatively, look around the JBoss docs for how to disable/turn off the unified classloader for your app (its a directive in jboss-web.xml IIRC). This should make the classloader for your webapp perform to spec, getting rid of the class colission issues. -
Problem on open Preference in CMC: Unable to compile class for JSP
Hi all,
I meet problem when opening Preference in CMC.
When I click "Web Intelligence" or "Desktop Intelligence", the following message will be display:
An error has occurred:
Unable to compile class for JSP
I have check for catalina.out in tomcat, following error comes out:
java.io.FileNotFoundException: /opt/boe/bobje/tomcat/work/Catalina/localhost/AnalyticalReporting/org/apache/jsp/jsp/User_005fWebiPreferences/user_005fwebipreferences_jsp.java (No such file or directory)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:70)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:140)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1596)
at com.businessobjects.webutil.struts.CrystalUTF8InputActionServlet.process(CrystalUTF8InputActionServlet.java:32)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Please help to indicate where is the problem. Many thanks.
Regards,
MayHi all,
I meet problem when opening Preference in CMC.
When I click "Web Intelligence" or "Desktop Intelligence", the following message will be display:
An error has occurred:
Unable to compile class for JSP
I have check for catalina.out in tomcat, following error comes out:
java.io.FileNotFoundException: /opt/boe/bobje/tomcat/work/Catalina/localhost/AnalyticalReporting/org/apache/jsp/jsp/User_005fWebiPreferences/user_005fwebipreferences_jsp.java (No such file or directory)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:70)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:140)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1596)
at com.businessobjects.webutil.struts.CrystalUTF8InputActionServlet.process(CrystalUTF8InputActionServlet.java:32)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:492)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Please help to indicate where is the problem. Many thanks.
Regards,
May -
Generated servlet error - unable to compile class for JSP - using NB5.5/SS9
I am using NB5.5 beta2 and Sun server 9.0 with JSF 1.1 - all is OK when I am creating firts JSF application - welcomeJSF.jsp page is rendered normally - but when I am adding one more jsp with JSP view and so on - then - I am getting errors in both JSF pages - both - in original welcomeJSF and the new invoice.jsp page
here is code for typical error
org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JasperException: Unable to compile class for JSP
Generated servlet error:
[javac] E:\Sun\AppServer\domains\domain1\generated\jsp\j2ee-modules\ERPSolution\org\apache\jsp\welcomeJSF_jsp.java:99: cannot find symbol
[javac] symbol : method setJspId(java.lang.String)
[javac] location: class com.sun.faces.taglib.jsf_core.ViewTag
[javac] jspxth_f_view_0.setJspId("id7");
[javac] ^
Generated servlet error:
[javac] E:\Sun\AppServer\domains\domain1\generated\jsp\j2ee-modules\ERPSolution\org\apache\jsp\welcomeJSF_jsp.java:144: cannot find symbol
[javac] symbol : method setJspId(java.lang.String)
[javac] location: class com.sun.faces.taglib.html_basic.OutputTextTag
[javac] jspxth_h_outputText_0.setJspId("id17");
[javac] ^
Generated servlet error:
[javac] E:\Sun\AppServer\domains\domain1\generated\jsp\j2ee-modules\ERPSolution\org\apache\jsp\welcomeJSF_jsp.java:145: setValue(java.lang.String) in com.sun.faces.taglib.html_basic.OutputTextTag cannot be applied to (javax.el.ValueExpression)
[javac] jspxth_h_outputText_0.setValue(org.apache.jasper.runtime.PageContextImpl.getValueExpression("Java Server Faces", (PageContext)_jspx_page_context, java.lang.Object.class, null));
[javac] ^
[javac] 3 errors
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:94)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:384)
org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:461)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:528)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:507)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:495)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:530)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:409)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:317)
javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:414)
com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:455)
com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:139)
com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:73)
com.sun.enterprise.web.VirtualServerPipeline.invoke(VirtualServerPipeline.java:120)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:231)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.invokeAdapter(ProcessorTask.java:667)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.processNonBlocked(ProcessorTask.java:574)
com.sun.enterprise.web.connector.grizzly.ProcessorTask.process(ProcessorTask.java:844)
com.sun.enterprise.web.connector.grizzly.ReadTask.executeProcessorTask(ReadTask.java:287)
com.sun.enterprise.web.connector.grizzly.ReadTask.doTask(ReadTask.java:212)
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:252)
com.sun.enterprise.web.connector.grizzly.WorkerThread.run(WorkerThread.java:75)
note The full stack trace of the root cause is available in the Sun Java System Application Server Platform Edition 9.0 logs.
and there is output for another error:
Generated servlet error:
[javac] E:\Sun\AppServer\domains\domain1\generated\jsp\j2ee-modules\ERPSolution\org\apache\jsp\welcomeJSF_jsp.java:144: cannot find symbol
[javac] symbol : method setJspId(java.lang.String)
[javac] location: class com.sun.faces.taglib.html_basic.OutputTextTag
[javac] jspxth_h_outputText_0.setJspId("id17");
[javac] ^
Generated servlet error:
[javac] E:\Sun\AppServer\domains\domain1\generated\jsp\j2ee-modules\ERPSolution\org\apache\jsp\welcomeJSF_jsp.java:145: setValue(java.lang.String) in com.sun.faces.taglib.html_basic.OutputTextTag cannot be applied to (javax.el.ValueExpression)
[javac] jspxth_h_outputText_0.setValue(org.apache.jasper.runtime.PageContextImpl.getValueExpression("Java Server Faces", (PageContext)_jspx_page_context, java.lang.Object.class, null));
[javac] ^
[javac] 3 errors
and here is code of my new invoice.jsp page:
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<%--
The taglib directive below imports the JSTL library. If you uncomment it,
you must also add the JSTL library to the project. The Add Library... action
on Libraries node in Projects view can be used to add the JSTL 1.1 library.
--%>
<%--
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
--%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<f:view>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1><h:outputText value="Java Server Faces" /></h1>
<h:inputText value="#{managerBean.currentInvoice.id}"/>
<h:inputText value="#{managerBean.currentInvoice.description}"/>
<h:inputText value="#{managerBean.currentInvoice.total}"/>
<h:commandButton value="new_invoice"
type="submit"
actionListener="#{managerBean.createNewInvoice}"/>
</body>
</f:view>and faces-config.xml file:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE faces-config PUBLIC
"-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
"http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
<!-- =========== FULL CONFIGURATION FILE ================================== -->
<faces-config>
<managed-bean>
<managed-bean-name>managerBean</managed-bean-name>
<managed-bean-class>com.brl.ERPSolution.ui.ManagerBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
</faces-config>managerBean was intended to be backing beans which will call the facaed beans of EJB 3.0 entity beans - but at presnet - almost empty methods are declared there:
package com.brl.ERPSolution.ui;
import javax.faces.event.ActionEvent;
import com.brl.solutions.EJB3.*;
* @author Administrator
public class ManagerBean {
protected int currentInvoiceId;
protected Invoices currentInvoice;
protected InvoicesFacade invoicesFacade;
/** Creates a new instance of ManagerBean */
public ManagerBean() {
/* business methods */
public void createNewInvoice(ActionEvent actionEvent)
invoicesFacade.create(this.currentInvoice);
public Invoices getCurrentInvoice()
return this.currentInvoice;
public void setCurrentInvoice(Invoices currentInvoice)
this.currentInvoice=currentInvoice;
}I read in one blog (actually - the only page which was returned by yahoo - so - this should be very rare error!!!) to try to use Sun server's verifier.bat - and - it reported 0 errors and 0 warning. Build was succesfull as well and also - deployment was without errors - but - above mentioned error appeared during the automatic compilation of jsp pages/servlet when newly deployed jsps are first accessed from remote browser.
So - is it possible, please, to receive some advice - what to do further? I feel that my invoice.jsp page can be with errors, - however - the original welcomeJSF.jsp should be working without errors even the erronwous JFS jsp page is added to web application.
Thans for any adice or hint in advance!!!OK - I have made 'clean and build main project' from NB menu and the deployed the resulting *.war and the error messages have disappeared... So - it seems to be bug...
-
Error:Unable to compile class for JSP
Hi all,
I am new at jsp,just started to learn a week ago :) Anyway I'm having troubles with using a compiled java class in jsp code.I use tomcat 4.1.31 and java 1.4.2.I have compiled the following programm and put the class into tomcats' webapps\ch06\WEB-INF\classes directory
public class ch06_01
public ch06_01()
public String msg()
return "Hello from JSP!";
Then I have the following jsp file in the webapps\ch06 dir as well:
<%@ page import="ch06_01" %>
<HTML>
<HEAD>
<TITLE>Using a JavaBean</TITLE>
</HEAD>
<BODY>
<H1>Using a JavaBean</H1>
<% ch06_01 messager = new ch06_01(); %>
The message is: <%= messager.msg() %>
</BODY>
</HTML>
But when I try to ran the jsp page following error occures:
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: -1 in the jsp file: null
Generated servlet error:
[javac] Compiling 1 source file
C:\jakarta-tomcat-4.1.31\work\Standalone\localhost\ch06\ch06_02_jsp.java:7: '.' expected
import ch06_01;
^
1 error
Can anybody help me,please!I appreciate your help a lot!
Thank you verry much!
Best regards DaisyIts not a Tomcat issue per se, but a change in the J2SE.
Its been the case since the release of Java 1.4, when they disabled access to the "default" package. Quite a few of the books written before Java1.4 was released are still around, and there are endless examples around the net that no longer work as a result of this change. -
Hi,
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You can't drag a transition into the canvas. If you're dragginmg a transition from the effects tab you drag it between the edit point of two clips in the timeline.
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