To use JSP

Hi friends
I like to use JSP and servlet.I installed JDK1.5.0_03 version.But when I compiled servlet file it gives error 'that package javax not foud'.
Which web server can be used for JSP and servlet. as a free of cost?
Thank you friends

JDK 1.4 or 1.5 are not enough to do JSP/servlets anyway. You need the J2EE classes, which are an extention to the J2SE classes. Tomcat comes with the ones needed for JSP/servlets

Similar Messages

Using jsp:param

hi,
i am new to java and jsp programming and i am trying to use jsp:param nested in my
jsp:forward statement.
if i specify a value in jsp:param my page would display properly. however when i passed a variable in my jsp:param i get the error:
Generated servlet error:
[javac] Compiling 1 source file
C:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\star\jsp\Meeting_CreateMinutes_jsp.java:135: cannot resolve symbol
symbol : method encode (long)
location: class java.net.URLEncoder
pageContext.forward("Meeting_ActionItems.jsp" + "?" + "docno=" + java.net.URLEncoder.encode( carno ) + "&" + "formmode=" + "Add");
^
1 error
this is the snippet in my jsp page that (i suspect) caused the error:
<% long carno = newcar.getDocno(); %>
<jsp:forward page="Meeting_ActionItems.jsp">
<jsp:param name="docno" value="<%= carno %>"/>
<jsp:param name="formmode" value="Add"/>
</jsp:forward>
my question is : does jsp:param do not accept variables as values?
thanks in advance.
best regards,
noynoy

<% long carno = newcar.getDocno(); %>Change this part as
<% String carno = ""+newcar.getDocno(); %>
Hafizur Rahman
SCJPhi Hafizur,
Thanks a lot. It solved my problem on the jsp:param error
More power!!!
rgds,
noynoy

Facelet to crare web app, instead of using JSP; JSF1.2 spec in WebSphere6.1

Novice to JSF and Facelet. But, I had been using Struts since its inception.
I am required to use IBM's WebSphere Application Server 6.1 that comes with Servlet 2.4 and JSP 2.0. WebSphere 6.1 App Server limits me to using JSF 1.1. This is because, JSF 1.2 requires Servlet 2.5 and JSP 2.1, that is a part of WebSphere App Server 7.0; not a part of WebSphere 6.1.
Somebody suggested that it will be possible to use JSF 1.2 in WebSphere 6.1, if I were using Facelet, instead of JSP.
I am not eager to use JSF 1.1 and may have to forego JSF; unless and until I can use JSF 1.2.
The hold-up is that I cannot use JSF 1.2 spec in WebSphere 6.1. Is there is any way to use JSF 1.2 in WebSphere 6.1? Can I create an entire application using Facelet (instead of JSP) that will let me use JSF 1.2 spec in WebSphere 6.1? If so, how?
Here are my questions, especially because I am not very familiar with JSF and Facelet technology:
1. Can I use JSF 1.2 specification in WebSphere 6.1, if I were using facelet (as opposed to JSP) as my view technology?
2. Will it be possible to create an entire web app with facelt, instead o fusing any JSP at all? If so, how? Does it mean that all the GUI screens will only use facelet and no JSP at all?
3. Please explain how I can write a complex web app with 100s of screens using only facelet, instead of using JSP.
4. Please provide pointer on how JSF and facelet differ, or what are their demarcations boundaries.
Any comment and pointer will be greatly appreciated.

Don't doublepost. It's rude. Stick to one topic. Continue here: [http://forums.sun.com/thread.jspa?threadID=5335001].

How can I connect to SQL server database thru local network by using JSP?

I'm currently doing a project by using JSP..And I need to display record from the SQL Server database in our school's local network. May I know how can I do that? How can I write the code so that I can able to access the SQL Server databsase Throught school's network by using JSP? Please tell me step by step how can I do that. I'm using Tomcat 4.1 as Web Server. And I had J2SE and J2EE installed in my computer.

first you have to establish a ODBC DSN on your computer,
that connects to the database...you can do that from your control pannel.
i assume that the TOMCAT server is residing on your computer....(if the webserver is in other computer then you would have to create a System DSN on the data sources ODBC option in the settings>control pannel of that machine)
then you can use that DSN name to connect to the data base from the class file....for further assistance on how to create the class that access the tutorials in sun site.
regards
G

How to get the values of an Array using JSP Tags

Hey guys,
I need some help. I've splited a String using
fn:split(String, delim) where String = "1,2,3,4" and delim is ,
This method returns an Array of splited Strings. how do i get the values from this array using jsp tags. I don't wanna put java code to achive that.
Any help would be highly appreciated
Thanks

The JSTL forEach tag.
In fact if all you want to do is iterate over the comma separated list, the forEach tag supports that without having to use the split function.
<c:set var="list" value="1,2,3,4"/>
<c:forEach var="num" items="${list}">
<c:out value="${num}"/>
</c:forEach>The c:forTokens method will let you do this with delimiters other than a comma, but the forEach tag works well just with the comma-delimited string.

Report generation using jsp

I am developing a website using jsp on tomcat.The site required a number of online report generation option from database(mysql).
My problem is-
1.how to generate different types of report other than simple html tag embedded within jsp .
2.How to store all those reports in a file(.txt or .doc).
N.B I dont want to use any reporting tool.

Mantosh,
Have you seen this developer zone article which details accessing Citadel Data using COM+ and ADO?
http://zone.ni.com/devzone/conceptd.nsf/webmain/725A6C3843F13C8786256EA600633724#6
Also, this KB article provides more detail on how to access Citadel data using SQL commands and I think will help answer your question:
http://digital.ni.com/public.nsf/websearch/C7D32F9A59D4637086256A7200692F30?OpenDocument
--Paul Mandeltort
Automotive and Industrial Communications Product Marketing

How to open a pdf file in a web browser using jsp

Hi,
I have a problem opening pdf file in browser using jsp.the following is my code.Can anyone help me.Thanks
response.setContentType("application/pdf");
String filename="C:\\FictPos\\mypdf.pdf";
File file = new File(filename);
FileInputStream in = new FileInputStream(file);
OutputStream out1=response.getOutputStream();
byte[] buf = new byte[4096];
int count = 0;
while ((count = in.read(buf)) >= 0)
out1.write(buf, 0, count);
in.close();
out1.close();
}

Don't know the problem specifically, but here are some suggestions to investigate:
Does it show anything in the page when you view source on it?
I would recommend using a servlet rather than a JSP page for this, if only for the fact the JSPs can insert carriage returns into places where you might not want them to. This might screw up the PDF file format?
Try setting the a link to the jsp, right-click and "save target as..." just to see if it gets any response at all - ie bypass the browser display.
Good luck,
evnafets

How to download a file from server machine to client machine using jsp

Hi,
In my application, I have an excel file stored on my server machine. How can I download that excel file on to my client machine using jsp. Is there any other way I can open that file from my machine and save it in my machine using jsp/java?
Its an emergency for me to do this.
Can anyone provide me the full code to download a file from server machine as I don't have
time to browse through various sites.
thanks in advance,
Tiijnar

Please post your code using code tags (click on CODE above the text area, when posting)
response.setContentType("application/octet-stream");Why octet-stream? Set the correct mime-type.
String disHeader = "Attachment; Filename=\"filename\"";The filename should just be the file's name. Not the complete path to the file! This will tell anyone where the file is located on the server. It's also inconvenient because by default,the browser will suggest it as the name for the download.
Your way of writing to the output stream is just plain wrong. See this snippet (picked from [http://balusc.blogspot.com/2007/07/fileservlet.html])
        BufferedInputStream input = null;
        BufferedOutputStream output = null;
        try {
            // Open streams.
            input = new BufferedInputStream(new FileInputStream(file), DEFAULT_BUFFER_SIZE);
            output = new BufferedOutputStream(response.getOutputStream(), DEFAULT_BUFFER_SIZE);
            // Write file contents to response.
            byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
            int length;
            while ((length = input.read(buffer)) > 0) {
                output.write(buffer, 0, length);
            // Finalize task.
            output.flush();
        } finally {
            // Gently close streams.
            close(output);
            close(input);
        }

How can I display a confirm box using JSP?

Dear All,
I am new to the Java language; please help!
What I'd like to do is to prompt the user, within a loop, to click OK to continue the loop or CANCEL to exit the loop. I've tried to use JavaScript in conjunction w/ Form submittion to handle the parameter passing ('true'/'false') of the confirm box to a JSP. Yet, every form submission will cause the JSP page to re-load from the top which is the incident I'd like to avoid.
Is there anyway I can have a confirm box written using JSP? Please help!!
Thanks,Wing.

if you do any modifications in the jsp page the whole page will be refreshed to show the latest result after modification.
if you dont want the whole page to be refreshed
you can pass the control to another page after the confirm box or you can use frames to your interest.

Is there any way to create discussion board using JSP

Hi! i'm doing a project using jsp is there any way to create a simple discussion board like the one here? can anyone who knows pls forward some links that teaches me how to do it step by step. Thanks for your help and have a nice day :)

From the UK! -- PC Plus, August 2000 Issue:
How to build a JSP Message Board
http://www.pcplus.co.uk/media/pcplus/pdf/166/pcplus.166.progworld.java.pdf
You'll get a nice 2-page pdf file, taken directly from the magazine
--Dave

Read an excel file using JSP in MII 12.1

Hi,
I want to read an excel file using jsp page. I dont want to use the UDS or ODBC for connecting to excel.
I am trying to use org.apache.poi to read the excel file in jsp page.
While running, its showing a compilation error "package org.apache.poi.hssf.usermodel does not exist"
I have the jar files for it, where do we need to upload it so that jsp page works.
Thanks a lot
Regards,
Neha Maheshwari

The user doesn't want to save the excel file in server.
I want to upload file and save its contents in database.
I have the code to read and save excel data in database but not able to get the location to deploy the jar file.
In general, if we are creating a jsp page in MII workbench which is using some jar file.
Whats the location to upload this jar file so that the jsp page works correctly?

Error when run a simple sample using jsp tag

When i run a jsp using jsp tag, the tomcat gave me the following information:
Resolve entity failed-//Sun Microsystems,Inc.//DTD JSP Tag Library 1.2//EN http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd
My tld file is:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>sample</short-name>
<uri>WEB-INF/sampleTag</uri>
<display-name>SampleTag</display-name>
<description>Sample TLD</description>
<tag>
<name>time</name>
<tag-class>com.sample.taglib.TimeTag</tag-class>
<body-content>empty</body-content>
</tag>
</taglib>
Anybody can tell me why?
Thanks!!!

It's strange bacause DTD is available under given address.
Which JSP version are you using?
Do you have any other tld file, which uses the same DTD version? Do tags define in it work properly?
Maby try to use 1.1 version of DTD?
<!DOCTYPE taglib PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.1//EN" "http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">But remember than version 1.1 has another node names (see http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd).

Export to Excel from Database using JSP

Hi Experts,
I'm using below jsp code to export from an Oracle table to Excel using JSP.
Every time I run this code I get the exception - "java.lang.OutOfMemoryError: Java heap space".
I need to download around 8000+ records of the table containing 60 columns.
I have increased Heap space but still the exception. Below is the code for your reference (I have mentioned only 30 columns where as there are 60 columns in actual). Pls help me what could be the other possible ways or suggest me any alternate code.
Pls note - Some of the terms like "<serverip>", MySchema, myfile, COL names are changed for confidentiality.
"D:\\Myfolder\\Excelfolder\\Final.xls" exists my the local machine.
The code works until some 4000 records & after that throws the exception.
try
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection connection = DriverManager.getConnection("jdbc:oracle:thin:@<serverip>:1521:WISTGDEV", "user", "user@123");
Statement statement = connection.createStatement();
String filename = "C:\\Myfolder\\Excelfolder\\Final.xls";
String strQuery1 = ("select * from Myschema.myfile");
ResultSet rs = statement.executeQuery(strQuery1);
HSSFWorkbook hwb = new HSSFWorkbook();
HSSFSheet sheet = hwb.createSheet("sheet1");
HSSFRow rowhead = sheet.createRow((short)0);
rowhead.createCell((short) 0).setCellValue("COL1");
rowhead.createCell((short) 1).setCellValue("COL2");
rowhead.createCell((short) 2).setCellValue("COL3");
rowhead.createCell((short) 3).setCellValue("COL4");
rowhead.createCell((short) 4).setCellValue("COL5");
rowhead.createCell((short) 5).setCellValue("COL6");
rowhead.createCell((short) 6).setCellValue("COL7");
rowhead.createCell((short) 7).setCellValue("COL8");
rowhead.createCell((short) 8).setCellValue("COL9");
rowhead.createCell((short) 9).setCellValue("COL10");
rowhead.createCell((short) 10).setCellValue("COL11");
rowhead.createCell((short) 11).setCellValue("COL12");
rowhead.createCell((short) 12).setCellValue("COL13");
rowhead.createCell((short) 13).setCellValue("COL14");
rowhead.createCell((short) 14).setCellValue("COL15");
rowhead.createCell((short) 15).setCellValue("COL16");
rowhead.createCell((short) 16).setCellValue("COL17");
rowhead.createCell((short) 17).setCellValue("COL18");
rowhead.createCell((short) 18).setCellValue("COL19");
rowhead.createCell((short) 19).setCellValue("COL20");
rowhead.createCell((short) 20).setCellValue("COL21");
rowhead.createCell((short) 21).setCellValue("COL22");
rowhead.createCell((short) 22).setCellValue("COL23");
rowhead.createCell((short) 23).setCellValue("COL24");
rowhead.createCell((short) 24).setCellValue("COL25");
rowhead.createCell((short) 25).setCellValue("COL26");
rowhead.createCell((short) 26).setCellValue("COL27");
rowhead.createCell((short) 27).setCellValue("COL28");
rowhead.createCell((short) 28).setCellValue("COL29");
rowhead.createCell((short) 29).setCellValue("COL30");
int index=1
String name="";
while(rs.next())
System.out.println("Inside while");
HSSFRow row = sheet.createRow((short)index);
row.createCell((short) 0).setCellValue(rs.getString(2));
row.createCell((short) 1).setCellValue(rs.getString(3));
row.createCell((short) 2).setCellValue(rs.getString(4));
row.createCell((short) 13).setCellValue(rs.getFloat(5));
row.createCell((short) 4).setCellValue(rs.getString(6));
row.createCell((short) 5).setCellValue(rs.getString(7));
row.createCell((short) 6).setCellValue(rs.getInt(8));
row.createCell((short) 7).setCellValue(rs.getString(9));
row.createCell((short) 8).setCellValue(rs.getString(10));
row.createCell((short) 9).setCellValue(rs.getString(11));
row.createCell((short) 10).setCellValue(rs.getString(12));
row.createCell((short) 11).setCellValue(rs.getFloat(13));
row.createCell((short) 12).setCellValue(rs.getFloat(14));
row.createCell((short) 13).setCellValue(rs.getFloat(15));
row.createCell((short) 14).setCellValue(rs.getFloat(16));
row.createCell((short) 15).setCellValue(rs.getFloat(17));
row.createCell((short) 16).setCellValue(rs.getFloat(18));
row.createCell((short) 17).setCellValue(rs.getFloat(19));
row.createCell((short) 18).setCellValue(rs.getFloat(20));
row.createCell((short) 19).setCellValue(rs.getFloat(21));
row.createCell((short) 20).setCellValue(rs.getFloat(22));
row.createCell((short) 21).setCellValue(rs.getString(23));
row.createCell((short) 22).setCellValue(rs.getString(24));
row.createCell((short) 23).setCellValue(rs.getString(25));
row.createCell((short) 24).setCellValue(rs.getString(26));
row.createCell((short) 25).setCellValue(rs.getString(27));
row.createCell((short) 26).setCellValue(rs.getString(28));
row.createCell((short) 27).setCellValue(rs.getString(29));
row.createCell((short) 28).setCellValue(rs.getString(30));
index++;
rs.close();
FileOutputStream fileOut = new FileOutputStream(filename);
hwb.write(fileOut);
fileOut.close();
connection.close();
catch(Exception e)
System.out.println(e.getMessage());
e.printStackTrace();
Thanks in advance,
Venky
Edited by: Venky_86 on Apr 15, 2009 12:06 AM

Its is an obvious thing...POI is known to need a lot of memory (the reason for that is most likely the OLE document format, which is quite complex).
I would have used something like the below to see if that can address my client's requirement.
public exportExcel(String fileName){
   Connection connection = null;
   Statement statement = null;
   ResultSet rs = null;
   PrintWriter out = null;
   int index=1;
   try{
     out = new PrintWrite(new FileWriter(fileName));
     connection = DbUtils.getConnection();
     statement = connection.createStatement();
     rs = statement.executeQuery("select * from Myschema.myfile");
     out.prinln("<table>");
     out.println("<th>COL1</th>");
     out.println("<th>COL2</th>");
     out.println("<th>COL3</th>");
     out.println("<th>COL4</th>");
     out.println("<th>COL5</th>");
     out.println("<th>COL6</th>");
     out.println("<th>COL7</th>");
     out.println("<th>COL8</th>");
     out.println("<th>COL9</th>");
    out.println("<th>COL30</th>");
     out.println("<thead>");
     out.println("<tbody>");
     while(rs.next()){
          out.println("<td>"+index+"</td>");
          out.println("<td>"+rs.getString(2)+"<td>");
          out.println("<td>"+rs.getString(3)+"<td>");
          out.println("<td>"+rs.getString(4)+"<td>");
          out.println("<td>"+rs.getString(5)+"<td>");
          out.println("<td>"+rs.getString(6)+"<td>");
          out.println("<td>"+rs.getString(7)+"<td>");
          out.println("<td>"+rs.getString(8)+"<td>");
          out.println("<td>"+rs.getString(9)+"<td>");
          out.println("<td>"+rs.getString(30)+"<td>");
     out.println("</tbody>")
     out.println("</table>");
     out.flush();
   }catch(Exception exp){
       exp.printStackTrace();
   }finally{
       if(out != null)
        try{out.close();}catch(Exception e){}
         if(rs != null)
           try{rs.close();}catch(Exception e){}
        if(statement != null)
           try{statement.close();}catch(Exception e){}
         if(connection != null)
           try{connection.close();}catch(Exception e){}
}and you can simply export the file using the method
ApplicationUtils.getInstance().exportExcel("c:/export/myapp/ApplicationTable.xls");If you are using Office 2000 and above you should able open it as an excel worksheet without any problems.
Hope that help :)
REGARDS,
RaHuL

I would like to upload a excel file using jsp

Hi,
I would like to upload the excel file using jsp in my netbeans ide. Please help.
I don Know what is the error in this jsp file. It is not showing any thing and the file is also not getting uploaded.
Please gothru the code below.
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ page import="java.io.*" errorPage="err.jsp"%>
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="<html:rewrite page="/design.css" />" rel="stylesheet" type="text/css">
<title>Upload Page</title>
</head>
<body onKeyDown="DisablingBackFunctionality()" onLoad="DisablingBackFunctionality()">
<html:form action="download" >
<div style="position:absolute; left:100;top:200;">Select an excel File :<input type="file" name="uploadfile"></div>
<div style="position:absolute; left:190;top:250;"><input type="submit" name="Submit" value="Read"></div>
<div style="position:absolute; left:336;top:250;"><input type="reset" name="Reset" value="Clear"></div>
mainmenu
</html:form>
</body>
</html>
<%
String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength) {
byteRead = in.read(dataBytes, totalBytesRead, formDataLength);
totalBytesRead += byteRead;
String file = new String(dataBytes);
//out.println("<br> file :"+file);
String saveFile = file.substring(file.indexOf("filename=\"") + 10);
//out.println("<br> savefile :"+saveFile);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
//out.println("<br> now file1 :"+saveFile);
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1, saveFile.indexOf("\""));
//out.println("<br> now file2 :"+saveFile);
//out.print(dataBytes);
String ext = "";
if (saveFile.indexOf(".") != -1) {
ext = saveFile.substring(saveFile.lastIndexOf("."));
int lastIndex = contentType.lastIndexOf("=");
//out.println("<br>lst index of"+lastIndex);
String boundary = contentType.substring(lastIndex + 1, contentType.length());
//out.println("<br> boundary"+boundary);
//out.println("<br> file :"+file);
int pos;
pos = file.indexOf("filename=\"");
//out.println("<br> now 0 :"+pos);
pos = file.indexOf("\n", pos) + 1;
//out.println("<br>now 1 :"+pos);
pos = file.indexOf("\n", pos) + 1;
//out.println("<br>now 2 :"+pos);
pos = file.indexOf("\n", pos) + 1;
//out.println("<br>now 3"+pos);
int boundaryLocation = file.indexOf(boundary, pos) - 4;
int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
FileOutputStream fileOut = new FileOutputStream("D:\\" + saveFile);
//FileOutputStream fileOut = new FileOutputStream(saveFile);
//fileOut.write(dataBytes);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();
session.setAttribute("fil", saveFile);
//out.println("File saved as " +saveFile);
%>
<script type="text/javascript" >
function DisablingBackFunctionality()
var URL;
var i ;
var QryStrValue;
URL=window.location.href ;
i=URL.indexOf("?");
QryStrValue=URL.substring(i+1);
if (QryStrValue!='X')
window.location=URL + "?X";
</script>
Please let me know the result as soon as possible. Its my very urgent.
Thanking Yu,
Muthu Kumar.R

No.
Mylenium

Deleting a row from a table using jsp

Given a table in a jsp, can an user click on a row of that table and retrieve the information so that the program can delete a record from a database table?
most of the tables that I have seen are static, the user cannot interact with them(specially when the user wants to delete several records from a database table).
Can anyone suggests a good book or way of deleting a row from table using jsp.

eg use a column in the table that has a radio button or check box,
on submit, get all the rows that are checked, using the row as an index into your db store, get the key and use the key to issue the sql delete command.

How to upload a file in BPEL Console Using JSP in JDeveloper, pleae........

I am very new to this JDeveloper & BPEl Process , please could some one help in ersolving my problem that is , how to upload a file in BPEL Console Using JSP in JDeveloper.

Hi,
ADF Faces provides you with the file upload component
http://download-uk.oracle.com/docs/html/B25947_01/web_complex006.htm#CEGCEDHF
http://download-uk.oracle.com/docs/html/B25947_01/appendixa007.htm#CHDEDCFA
This gives you a handle to the file content. However, uploading files through a service is different and I suggest to consult teh BPEL forum for this BPEL
Frank

To use JSP

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