Jsp/jstl/java bean to connect to standalone app in another language

hello.
i want to integrate all the existing applications that we have into one single online application. problem is, some of the existing applications are standalong done in different languages like java(in j2se), visual basic and c.
i want to make a menu with a link and in clicking taht link , i want it to execute that standalone application. is that possible?
any help would be much much appreciated
thanks

window.open(URL,'logWin01',winProps);
use the above function to launch new browser window.... it takes three arguments,
1) the URL of the window i.e., the jsp/html page which should be shown in the new window.
2) title of the window
3) properties of the window with coma "," seperated example
window.open("/CarrierMaskHelpPopup.jsp", "PopUpWindow1", "toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=no");

Similar Messages

Help me to control the transactions from jsp to java bean

Please anyone can guide me how to control the transactions from jsp to java bean. I am using the Websphere studio 5.1 to develop the database application. I would like to know two method to handle the database. First, I would like to know how I can control the transactions from jsp by using java bean which is auto generated for SQL statement to connect to the database. Following code are jsp and java bean.....
// call java bean from jsp
for (i=0;i<10;i++)
addCourse.execute(yr,sem,stdid,course,sec);
I write this loop in jsp to call java bean..
here is java bean for AddCourse.java
package com.abac.preregist.courseoperation;
import java.sql.*;
import com.ibm.db.beans.*;
* This class sets the DBModify property values. It also provides
* methods that execute your SQL statement and return
* a DBModify reference.
* Generated: Sep 7, 2005 3:10:24 PM
public class AddCourse {
     private DBModify modify;
     * Constructor for a DBModify class.
     public AddCourse() {
          super();
          initializer();
     * Creates a DBModify instance and initializes its properties.
     protected void initializer() {
          modify = new DBModify();
          try {
               modify.setDataSourceName("jdbc/ABAC/PreRegist/PRERMIS");
               modify.setCommand(
                    "INSERT INTO informix.javacourseouttemp " +
                    "( yr, sem, studentid, courseid, section ) " +
                    "VALUES ( :yr, :sem, :studentid, :courseid, :section )");
               DBParameterMetaData parmMetaData = modify.getParameterMetaData();
               parmMetaData.setParameter(
                    1,
                    "yr",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
               parmMetaData.setParameter(
                    2,
                    "sem",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
               parmMetaData.setParameter(
                    3,
                    "studentid",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.CHAR,
                    String.class);
               parmMetaData.setParameter(
                    4,
                    "courseid",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.CHAR,
                    String.class);
               parmMetaData.setParameter(
                    5,
                    "section",
                    java.sql.DatabaseMetaData.procedureColumnIn,
                    java.sql.Types.SMALLINT,
                    Short.class);
          } catch (SQLException ex) {
               ex.printStackTrace();
     * Executes the SQL statement.
     public void execute(
          String userid,
          String password,
          Short yr,
          Short sem,
          String studentid,
          String courseid,
          Short section)
          throws SQLException {
          try {
               modify.setUsername(userid);
               modify.setPassword(password);
               modify.setParameter("yr", yr);
               modify.setParameter("sem", sem);
               modify.setParameter("studentid", studentid);
               modify.setParameter("courseid", courseid);
               modify.setParameter("section", section);
               modify.execute();
          // Free resources of modify object.
          finally {
               modify.close();
     public void execute(
               Short yr,
               Short sem,
               String studentid,
               String courseid,
               Short section)
               throws SQLException {
               try {
                    //modify.setUsername(userid);
                    //modify.setPassword(password);
                    modify.setParameter("yr", yr);
                    modify.setParameter("sem", sem);
                    modify.setParameter("studentid", studentid);
                    modify.setParameter("courseid", courseid);
                    modify.setParameter("section", section);
                    modify.execute();
               // Free resources of modify object.
               finally {
                    modify.close();
     * Returns a DBModify reference.
     public DBModify getDBModify() {
          return modify;
I would like to know that how can I do for autocommit from jsp. For example, the looping is 10 times which mean I will add 10 records to the db. If the last record is failed to add to db, "how can I rollback the perivious records?" or guide me to set the commit function to handle that case. Thanks a lot for take your time to read my question.

Hello.
The best method is using a session bean and container managed transactions. Other method is using sessions bean and the user transaction object (JTA-JTS).
so, JDBC has transaction management too.
good luck.

Questions/answers from jsp to java bean

Hi
This is what i need to do .
I am showing some questions, say 4 of them , and radio buttons(yes/no) as answers in the JSP.
Now how do i transfer these questions and their answers from jsp to java bean .
I did try hashmap ,but not quite working .
any help?
thanks

Name each radiobutton differently, and then provide 1 property and accessor methods for each of your four answers in the JavaBean, with the same name as specified in the HTML FORM.
So in the HTML:
<input type="radio" name="answerOne" value="true"...>
and then have a property named answerOne with accessor methods in the javaBean...

First use of jsp and java bean and "Unable to compile class for JSP" error

Hi,
I am trying to create my first jsp + java bean and I get a basic error (but I have no clue what it depends on exactly). Tomcat seems to cannot find my class file in the path. Maybe it is because I did not create a web.xml file. Did I forgot to put a line in my jsp file to import my bean?
Thank you very much for your help.
Here is my error:
An error occurred at line: 2 in the jsp file: /login.jsp
Generated servlet error:
[javac] Compiling 1 source file
/usr/local/tomcat/jakarta-tomcat-5/build/work/Catalina/localhost/test/org/apache/jsp/login_jsp.java:43: cannot resolve symbol
symbol : class CMBConnect
location: class org.apache.jsp.login_jsp
CMBConnect test = null;
I only have this in my directory:
test/login.jsp
test/WEB-INF/classes/CMBConnect.java
test/WEB-INF/classes/CMBConnect.class
Do I need to declare another directory in classes to put my class file in it and package my bean differently?
Here is my login.jsp:
<%@ page errorPage="error.jsp" %>
<jsp:useBean id="test" type="CMBConnect" scope="session" />
<html>
<head>
<title>my test</title>
</head>
<body>
<h3>Login information</h3>
<b><%=session.getValue("customerinfo.message")%></b>
<form> ....... </form>
</body>
</html>
and here is my CMBConnect.java:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class CMBConnect
public CMBConnect () { }
public String openConnection(String id, String password) {
String returnText = "";
try {
Connection con = null;
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
con = DriverManager.getConnection("jdbc:oracle:thin:@myserver.abc.com:1521:TEST", id, password);
if(con.isClosed())
returnText = "Cannot connect to Oracle server using TCP/IP...";
else
returnText = "Connection successful";
} catch (Exception e) { returnText = returnText + e; }
return returnText;
Thanks again!

Thanks for you help
I created the package and I get this error this time:
javax.servlet.ServletException: bean test not found within scope
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:822)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:755)
     org.apache.jsp.login_jsp._jspService(login_jsp.java:68)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:268)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:277)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:223)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

Help with Login Form (JSP DB Java Beans Session Tracking)

Hi, I need some help with my login form.
The design of my authetication system is as follows.
1. Login.jsp sends login details to validation.jsp.
2. Validation.jsp queries a DB against the parameters received.
3. If the query result is good, I retrieve some information (login id, name, etc.) from the DB and store it into a Java Bean.
4. The bean itself is referenced with the current session.
5. Once all that's done, validation.jsp forwards to main.jsp.
6. As a means to maintain state, I prefer to use url encoding instead of cookies for obvious reasons.I need some help from step 3 onwards please! Some code snippets will do as well!
If you think this approach is not a good practice, pls let me know and advice on better practices!
Thanks a lot!

Alright,here is an example for you.
Assume a case where you don't want to give access to any JSP View/HTML Page/Servlet/Backing Bean unless user logging system and let assume you are creating a View Object with the name.
checkout an example (Assuming the filter is being applied to a pattern * which means when a resource is been accessed by webapplication using APP_URL the filter would be called)
public doFilter(ServletRequest req,ServletResponse res,FilterChain chain){
     if(req instanceof HttpServletRequest){
            HttpServletRequest request = (HttpServletRequest) req;
            HttpSession session = request.getSession();
            String username = request.getParameter("username");
            String password = request.getParameter("password");
            String method = request.getMethod();
            String auth_type = request.getAuthType();
            if(session.getAttribute("useInfoBean") != null)
                request.getRequestDispatcher("/dashBoard").forward(req,res);
            else{
                    if(username != null && password != null && method.equaIsgnoreCase("POST") && (auth_type.equalsIgnoreCase("FORM_AUTH") || auth_type.equalsIgnoreCase("CLIENT_CERT_AUTH")) )
                         chain.doFilter(req,res);
                    else
                      request.getRequestDispatcher("/Login.jsp").forward(req,res);
}If carefully look at the code the autherization is given only if either user is already logged in or making an attempt to login in secured way.
to know more insights about where these can used and how these can be used and how ?? the below links might help you.
http://javaboutique.internet.com/tutorials/Servlet_Filters/
http://e-docs.bea.com/wls/docs92/dvspisec/servlet.html
http://livedocs.adobe.com/jrun/4/Programmers_Guide/filters3.htm
http://www.javaworld.com/javaworld/jw-06-2001/jw-0622-filters.html
http://www.servlets.com/soapbox/filters.html
http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html
and coming back to DAO Pattern hope the below link might help you.
http://java.sun.com/blueprints/corej2eepatterns/Patterns/DataAccessObject.html
http://java.sun.com/blueprints/patterns/DAO.html
http://www.javapractices.com/Topic66.cjp
http://www.ibm.com/developerworks/java/library/j-dao/
http://www.javaworld.com/javaworld/jw-03-2002/jw-0301-dao.html
On the whole(:D) it is always a good practice to get back to Core Java/J2EE Patterns.and know answers to the question Why are they used & How do i implement them and where do i use it ??
http://www.fluffycat.com/java-design-patterns/
http://java.sun.com/blueprints/corej2eepatterns/Patterns/index.html
http://www.cmcrossroads.com/bradapp/javapats.html
Hope that might help :)
REGARDS,
RaHuL

New to Jsp. Jsp and java bean not running

hi
i have created a simple jsp file and using a java bean. but it is showing errors. my file directory structure in tomcat4.1 is:
aptechsamples:
index.jsp
WEB-INF/classes:
myPackage:
Counter.class
i have no web.xml file i dont know how to use it or not. i need it or not.
the index.jsp file:<html>
<head><title> A Simple JSP Bean </title></head>
<body>
<%@ page language ="java" %>
<%@ page import ="mypackage.Counter" %>
<jsp:useBean id="id_counter" scope="session" class ="Counter"/>
<jsp:setProperty name="id_counter" property="count" param="count" />
<jsp:getProperty name="id_counter" property="count" />
</body>
</html>the Counter.java file is: package mypackage;
public class Counter{
     String msg;
     public Counter(){
          msg = "Hello World";
     public String getCount(){
          return msg;
     public void setCount(String c){
          msg = c;
}please help me and tellme what the hell is wrong with it or me. im getting an error:
exception
org.apache.jasper.JasperException: Cannot create bean of class Counter

Java is already telling you what is wrong: it cannot create an instance of your Counter class. The reason being: it can't find it.
What do you mean by "myPackage"? Before you can use any class in your JSP's or servlets, they MUST be stored in a package. If you don't know what that is, I highly suggest you lookup "java package" and "java classpath" using google.
Let's say your Counter class is in a package mypackage (so it starts with the line package mypackage;). Then you have to store the .class file as:
WEB-INF/classes/mypackage/Counter.class
If done correctly, the error message should disappear.

What's the difference between using java directly in JSP and java bean

What is the difference if I use java code directly in JSP or use java bean in JSP?
Which class to use for receiving the passed parameter from html or java script? Any difference for java code and java bean in the way receiving the passed data?
How can I pass string from jsp to html or java script?

1 Cleaner pages
2 you have to write the class and use set and get methods
3 What do you mean when saying passing string from jsp to html??, do you mean the value you can use <%=variablename%>

How to pass value from jsp to java bean

I have huge problem . How to pass value from jsp value to java bean.Please replay me soon

Use the <jsp:setProperty> tag. There are several ways to use it. The one you probably want is:
<jsp:setProperty name="bean_name" property="property_name" value="the_value_you_want_to_set"/>

JSP and Java Beans with Database Problem

hellow, this is my first posting and i hope to help me as fast as you can...
my problem is simplly i cant get any data from the database (whatever the database it is, i test it with MS Access and MySQL server) when i use a bean, But if i put my connection statement in the JSP file thair is no problem... ???? !!!!
for example i have a class "Authentication" that have a method to test if the username and password is correct or not and return 1 if true, 0 if false, -1 if thair are some problem in connecting DB.
now if i create a normal java application that uses this method, it's work and no problems, BUT if i used a JSP page to use this method it's return allways -1

T1 class:
package VX;
import java.sql.*;
import java.util.*;
import javax.swing.*;
public class T1
//public MBJDBConnection(String driver,String url)
public T1()
JDBC_DRIVER = "com.mysql.jdbc.Driver";//driver;
DATABASE_URL = "jdbc:mysql://localhost:3306/rawafed?user=root;password=0000";//url;
//=======DB CONNECTION===========================================
private static String JDBC_DRIVER;
private static String DATABASE_URL;
protected Connection connection;
protected Statement statement;
//===========End DBC==============================================
public int update(String sqlUpdate)
     int i=0;
          //connectDB();
          try{
               i=statement.executeUpdate(""+sqlUpdate);
               catch(Exception e)
                    System.out.println("Error Inserting Statement Or Connection Not Opened");
          //disconnectDB();
     return i;
public ResultSet select(String sqlQuery)
          //connectDB();
          ResultSet rs;
          try
          {//open try
          rs=statement.executeQuery(""+sqlQuery);
               return rs;
          }//end try
          catch(Exception e2)
               //System.out.println("Error Selecting Statement Or Connection Not Opened");
          }//end catch
          //add to array list
     //return resultList;
     return null;
//------Methods-------
public void connectDB()
//===========================Connection===================
try
Class.forName(JDBC_DRIVER);
catch(Exception e)
System.out.println("Error : FOR NAME");
try
connection = DriverManager.getConnection(DATABASE_URL, "root", "0000");
catch(Exception e)
System.out.println("Error : DB URL");
try
statement = connection.createStatement();
catch(Exception e)
System.out.println("Error : CREATE STATEMENT ERROR");
public void disconnectDB()
try
statement.close();
connection.close();
catch(Exception e2)
System.out.println("Error : CAN'T CLOSE DB");
T2 Class
package VX;
// class Person.
//Required Class : EDC.EDCDB
import java.sql.*;
public class T2
     public T2()
          //initialization
     //........................ Attributes .........................
     private String user;
     private String password;
     private T1 db=new T1();
     private ResultSet rs;
     //......................... Methods .........................
     public String getAdmin(String u,String p)// 0: Failure, 1:Success and he is Administrator, 2: success and he is a regular employee 3: SUCCESS AND HE IS agent
          try
          user=u;
          password=p;
          rs=db.select("SELECT emp_id,password FROM Employee WHERE emp_id="+user+" AND password="+password+" AND Rank_ID=1");
          if(rs.next())
               return ""+1;
          else
               rs=db.select("SELECT emp_id,password FROM Employee WHERE emp_id="+user+" AND password="+password+" AND Rank_ID=2");
               if(rs.next())
                    return ""+2;
               else
                    rs=db.select("SELECT emp_id,password FROM Employee WHERE emp_id="+user+" AND password="+password+" AND Rank_ID=3");
                    if(rs.next())
                         return ""+3;
                    else return ""+0;
          catch(Exception e){System.out.println("Error \n"+e.getMessage());return ""+e.getMessage()+"\n"+(-1);}
     public int getCard(String u,String p)// 0: Failure, 1:Success and he is Administrator, 2: success
          user=u;
          password=p;
          try
          db.connectDB();
          rs=db.select("SELECT Card_ID,password FROM Card WHERE Card_ID='"+user+"' AND password='"+password+"'");
          if(rs.next())
               return 1;
          return 0;
          catch(Exception w)
               return -1;
          finally
               //System.out.println("Done");
               db.disconnectDB();
     public int getAny()
          return 1;
}//end class
This is a tested class and it's work OK
import VX.T2;
public class T3
     public static void main(String [] args)
          System.out.println("System Started...");
          try
               T2 t2=new T2();
               System.out.println(t2.getCard("1","a"));
          catch(Exception e)
               System.out.println("Opsssss ...");
Now this is the JSP Code that OK and Run without any problems
<%@ page contentType="text/html; charset=windows-1256" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1256" />
<title>test</title>
</head>
<body>
<%
//Mazin B. Jabarin 20210464
//Testing JSP - MySQL Server Driver
String connectionURL = "jdbc:mysql://localhost:3306/EDCDB?user=root;password=0000";
Connection connection = null;
Statement statement = null;
ResultSet rs = null;
%>
<%
try{
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection(connectionURL, "root", "0000");
statement = connection.createStatement();
rs = statement.executeQuery("SELECT * FROM a");
while (rs.next()) {
out.println(rs.getString("id")+"<br>");
rs.close();
catch(Exception e)
out.print("Error : "+e.getMessage());
%>
</body>
</html>
Now this JSP File always returns (-1) ???? !!!!!!!
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" import="VX.T2" import="java.util.*" errorPage="" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body>
<%
try
T2 t2=new T2();
out.println("Result Still : "+t2.getCard("1","a"));
catch(Exception w)
out.println("<BR> Error In Execution ??? "+w.getMessage());
%>
</body>
</html>
++++++++++++++++++++++++++++
any one can help me please :(
i use tomcat as web-application
and i install jdk 1.5
also JBulder 7
(now i supposed that the JBulder make some conflict, so i uninstalled it but still Not Working) ...
before one year i was working just like this way and it was working
but now i dont know what is the problem
i am really need help.

Is it possible to Use Java Studio Creator to create standalone Apps

I am looking for a good Java IDE for client application development. I used to use JBuilder, but it doesn't work on the Intel line of Macs.
I have been checking out Jaca Studio Creator, but it seems to only be for server apps.
Is there a download somewhere that will enable this?
Thanks, Michael

Have you looked at http://www.netbeans.org or http://developers.sun.com/prodtech/javatools/jsenterprise/index.jsp?

(Servlet/JSP based): How to secure calling of one apps from another

I am having two different web application(Servlet/JSP based) on two different servers. For example,
AppsA is on '*http://IP1:PORT1:AppsA*' and AppsB is on '*http://IP2:PORT2:AppsB*'
I am sending a request from AppsA to AppsB for the PDF (ONLY THIS, No more interaction). Which is working fine. But the URL of AppsB i.e. 'http://IP2:PORT2:AppsB' appears in the browser.
But i don't want to show the interaction of AppsB. I have tried to FORWARD the request to AppsB but it only allows relative path.
So how can i make it secured..?
Thanks.

Now it's secured...
Thanks BalusC
--Kunal Dav

Uploading a file from standalone app to another machine

hi there,
i wrote a awt application which can read a file in the local machine. after that i need to upload it to another machine in the internet. I got permissions to access that machine.
if anybody knows the way how i can do this please help me.
batta

Yeah well if the machine has a webinterface, look for a package which can do HTTP uploads. Else check the apache commons.net which contains a nice FTP api.
http://jakarta.apache.org/commons/net/

Problem with java beans and jsp on web logic 6.0 sp1

          HI ,
          I am using weblogic6.0 sp1.
          i have problem with jsp and java beans.
          i am using very simple java bean which stores name and email
          from a html form.
          but i am getting following errors:
          Full compiler error(s):
          D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:89:
          cannot resolve symbol
          symbol : class userbn
          location: class jsp_servlet._savename2
          userbn ud = (userbn) //[ /SaveName2.jsp; Line: 7]
          ^
          D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:89:
          cannot resolve symbol
          symbol : class userbn
          location: class jsp_servlet._savename2
          userbn ud = (userbn) //[ /SaveName2.jsp; Line: 7]
          ^
          D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:94:
          cannot resolve symbol
          symbol : class userbn
          location: class jsp_servlet._savename2
          ud = (userbn) java.beans.Beans.instantiate(getClass().getClassLoader(),
          "userbn"); //[ /SaveName2.jsp; Line: 7]
          ^
          3 errors
          in which directory should i place java bean source file(.java file)
          here is my jsp file:
          <%@ page language = "java" contentType = "text/html" %>
          <html>
          <head>
          <title>bean2</title>
          </head>
          <body>
          <jsp:usebean id = "ud" class = "userbn" >
          <jsp:setProperty name = "ud" property = "*" />
          </jsp:usebean>
          <ul>
          <li> name: <jsp:getProperty name = "ud" property = "name" />
          <li> email : <jsp:getProperty name = "ud" property = "email" />
          </ul>
          </body>
          <html>
          here is my bean :
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          import java.io.*;
          public class userbn implements Serializable
               private String name ;
               private String email;
               public void setName(String n)
                    name = n;
               public void setEmail(String e)
                    email = e;
               public String getName()
                    return name;
               public String getEmail()
                    return email;
               public userbn(){}
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          pls help me.
          Thanks
          sravana.


          You realy can do it like Xiang says, but the better way is to use packages. That's
          the way BEA is designed for. If you use packages you can but your bean classes
          in every subfolder beneath Classes. Here for example we have the subfolders test
          and beans:
          You have to declare the package on top of your Bean Source Code:
          package test.beans;
          In your JSP you don't need the import code of Xiang. You only have to refer the
          path of your bean class:
          <jsp:useBean id="testBean" scope="session" class="test.beans.TestBean" />
          There are some other AppServers that only can deploy Java Beans in packages. So
          if you use packages you are always on the right side.
          ciao bernd
          "sravana" <[email protected]> wrote:
          >
          >Thank you very much Xiang Rao, It worked fine.
          >Thanks again
          >sravana.
          >
          >"Xiang Rao" <[email protected]> wrote:
          >>
          >><%@ page import="userbn" language = "java" contentType = "text/html"
          >>%> should
          >>work for you.
          >>
          >>
          >>"sravana" <[email protected]> wrote:
          >>>
          >>>HI ,
          >>>
          >>>I am using weblogic6.0 sp1.
          >>>
          >>>i have problem with jsp and java beans.
          >>>
          >>>i am using very simple java bean which stores name and email
          >>>
          >>>from a html form.
          >>>
          >>>but i am getting following errors:
          >>>
          >>>________________________________________________________________
          >>>
          >>>Full compiler error(s):
          >>>D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:89:
          >>>cannot resolve symbol
          >>>symbol : class userbn
          >>>location: class jsp_servlet._savename2
          >>> userbn ud = (userbn) //[ /SaveName2.jsp; Line: 7]
          >>> ^
          >>>D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:89:
          >>>cannot resolve symbol
          >>>symbol : class userbn
          >>>location: class jsp_servlet._savename2
          >>> userbn ud = (userbn) //[ /SaveName2.jsp; Line: 7]
          >>> ^
          >>>D:\bea4\wlserver6.0sp1\config\mydomain\applications\DefaultWebApp_myserver\WEB-INF\_tmp_war_myserver_myserver_DefaultWebApp_myserver\jsp_servlet\_savename2.java:94:
          >>>cannot resolve symbol
          >>>symbol : class userbn
          >>>location: class jsp_servlet._savename2
          >>> ud = (userbn) java.beans.Beans.instantiate(getClass().getClassLoader(),
          >>>"userbn"); //[ /SaveName2.jsp; Line: 7]
          >>> ^
          >>>3 errors
          >>>
          >>>____________________________________________________________
          >>>
          >>>in which directory should i place java bean source file(.java file)
          >>>
          >>>here is my jsp file:
          >>>--------------------------------------------------------
          >>>
          >>><%@ page language = "java" contentType = "text/html" %>
          >>><html>
          >>><head>
          >>><title>bean2</title>
          >>></head>
          >>><body>
          >>><jsp:usebean id = "ud" class = "userbn" >
          >>><jsp:setProperty name = "ud" property = "*" />
          >>></jsp:usebean>
          >>><ul>
          >>><li> name: <jsp:getProperty name = "ud" property = "name" />
          >>><li> email : <jsp:getProperty name = "ud" property = "email" />
          >>></ul>
          >>></body>
          >>><html>
          >>>
          >>>-------------------------------------------------------------
          >>>
          >>>here is my bean :
          >>>
          >>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          >>>
          >>>import java.io.*;
          >>>
          >>>public class userbn implements Serializable
          >>>{
          >>>
          >>>     private String name ;
          >>>
          >>>     private String email;
          >>>
          >>>     public void setName(String n)
          >>>     {
          >>>
          >>>          name = n;
          >>>     }
          >>>
          >>>     public void setEmail(String e)
          >>>     {
          >>>
          >>>          email = e;
          >>>     }
          >>>
          >>>     public String getName()
          >>>     {
          >>>
          >>>          return name;
          >>>     }
          >>>
          >>>     public String getEmail()
          >>>     {
          >>>
          >>>          return email;
          >>>     }
          >>>
          >>>     public userbn(){}
          >>>}
          >>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          >>>
          >>>pls help me.
          >>>Thanks
          >>>sravana.
          >>>
          >>
          >

Should I use JSP,JSTL,SERVLETs without a framework?

Hi Guys
I'm making a multi player browser game. The game will have some forms to setup data into the database and the player will be able to check other players data.
I will load the players data from the DB into a Bean when the application starts and then just get the other players information from DB when and if asked.
I'm planing on doing it as MVC2 using JSP, JSTL, SERVLETs, BEANs
Would you recommend me to use Struts for example? should I just use it without any framework?
I read a lot about Struts and can't really see what it can bring to an application like mine. I can use the i18n easily with JSTL and for few validation of forms I don't know if it's worth it.
What do you think? (-:
Thanks in advance
(-:

If your going to use MVC2 then I would use a framework, otherwise where are you going to get your MVC from, were you planning on writing an MVC yourself?

Java Bean scope when used with the JPDK

Portal 3.0.9.8.4 and Jserv
When using JSPs with Java Beans and the JPDK I have noticed problems when setting the scope attribute of the useBean action to something other than "page". For example, <jsp:useBean id="provider" scope="session" class="MyClass" /> causes a java.lang.ClassCastException when there are more than two JSP portlets than attempt to access the ProviderSession object.
Does anyone know what value the JSP scope should be set to when you want the JSPs read/write to the ProviderSession?

The behavior you report is an expected one as your keys of objects on session are not unique to the two portlet instances. Two portlets with the same session object (may have been deployed on the same Portal page), are sharing the same object put on session, thus resulting in thread conflicts. What you need to do is to generate unique keys for objects stored for each portlet instance.
For example, instead of having the id as "provider", you should have it as <portlet instance name> + "provider".
You are not experiencing the same behavior in "request" or "page" scope, as in these scopes, the objects are not shared across portlet instances.
Please let me know if my interpretation of your issue is wrong.
Regards,
Abhinav

Jsp/jstl/java bean to connect to standalone app in another language

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