JSP to class file conversion

Hi all,
I'm having a small problem. As we know JSP is converted to class file before execute. So I would like to know where this temp class files are created.
Specially in Weblogic Server.
Lakmal
[email protected]

Where the class files are created is totally dependant on the implementation of the server.
Tomcat has a "work" directory where it puts all the generated java and class files from jsps.
A quick google turned up [this page|http://m-button.blogspot.com/2008/09/using-jsp-precompilation-in-weblogic.html] which mentions the default location for the classes.
cheers,
evnafets

Similar Messages

How to convert JSP Compiled class file back to JSP

Is their any way to convert the JSP converted class file back into JSP file, I have few JSP files missing in my application but i do have class files deployed corresponding to the JSP file. Is their any way where i can convert my JSP class file back to JSP. I tried used decompliers but it conerts the class file into JAVA files, Is their any such decompiler that converts the JSP converted class file into Java files.
Thanks in Advance.

nope...its not et al possible...!!!
You cant convert class file back to JSP....!!

Jsp to class files

All,
I am pretty new with jsp and java. I want to know if how do I deploy a jsp application as class files instead of sources. Can someone give me how do I get start with this? Many thanks.

You can do this:
1. Install Jakarta Ant
2. Create a file called jsp.xml that contains
<?xml version="1.0"?>
<project name="jspc-test" default="main" basedir=".">
<target name="main" depends="myjsp">
</target>
<target name="init">
<property name="uriroot.dir" location="."/>
<property name="jsp.dir" location="<your jsp directory>"/>
<property name="jsp.output.dir" location="<your output directory>"/>
<property name="jsp.verbosity" value="3"/>
<mkdir dir="${jsp.output.dir}"/>
</target>
<target name="myjsp" depends="init">
<jspc
destdir="${jsp.output.dir}"
uriroot="${uriroot.dir}"
srcdir="${jsp.dir}"
verbose="${jsp.verbosity}">
<include
name="<your jsp file name>.jsp"/>
</jspc>
</target>
</project>
3. Run a batch file that looks like this:
set CLASSPATH=<path to your jar>;<path to your jar>
<full path>\java -Dant.home="<full path>\ant" org.apache.tools.ant.Main -f "<full path>\jspc.xml"
This will create a <your jsp file name>_jsp.java
4. Compile the resultant java file
Or if you want this done automated, then use this tool
http://download.com.com/3000-2417-10227362.html
Write your .jsp file. Compile. You can find the .java and the .class file in \workarea

Class File conversion

Hi All
I am new to webforms and can any one pls do let me know what is the component that is converting fmx files into class files.
any white paper links pls refer to me.
Thanks In advance
sasidhar.p

Hi,
there is no need to convert fmx files into class files. The Forms Services runtime engine interprets fmx files and displays them as an Applet in the browser
Frank

Web application restarts when JSP or .class files on disk change

Hello,
I am deploying a Spring enabled web application into WLS 12 using IntelliJ11.
I am building an exploded war in a target directory and have my WLS domain's config.xml set up to pick up the application from that directory directly. I am not using a staging approach.
The application starts up fine in debug mode in IntelliJ 11. I am able to make changes to Java classes, hit Ctrl+F9 to "Make the Project" and changed Java classes get reloaded and I see the changes I have made.
All this happens without WLS reloading the web application, which is as it should be.
When I try to make changes to JSPs, I start seeing a different behavior. This is how I'm changing my JSPs:
1) I edit the file in IntelliJ.
2) I hit Ctrl+F9....nothing happens, I don't see my changes in the JSP, I don't see any web application restarts. This is because with a Ctrl+F9, IntelliJ does not update the JSP in the target directory.
3) When I hit Ctrl+F10 instead, i.e. "Update application", IntelliJ presents me with a choice to "Update resources", "Update classes & resources", "redeploy", "restart the server".
I choose "Update resources"
When I do this, I see on the file system that IntelliJ has changed the JSP in the target directory. As it should. WLS is also using this directory, so it should see the changed JSP and recompile and show me my changes.
Now when I access the application, I see varying behavior.
Sometimes I see my JSP changes just fine and sometimes instead of seeing my changes, my entire web application starts shutting down and attempts to restart. Note, I said the web application and not the WLS server.
It's almost as if I've hit a Redeploy.
I have disabled "Fast Swap", as I cannot get my Spring application context to load when this is enabled. So, I'm just using Hot Swap.
Why is WLS restarting my web application once in a while when my JSPs change?
And this is not restricted to JSP files only. If I choose the option to "Update classes & resources", any Java classes I've changed get updated on the disk in the target directory. Now WLS once in a while decides that it needs to restart my web application. I can get away with hitting Ctrl+F9, which does not update the .class on the disk and only in the JVM, and see my changes.
But I have no such option for JSPs. So hot swap essentially is erratic for JSPs in my deployment in WLS 12.

There is a workaround for this. Not pretty, but it works for me.
Instead of having IntelliJ update the exploded war when I do a Make (Ctrl+F9), I tell IntelliJ to NOT do any updates to the artifact on the disk.
That is, just compile. As explained before, that works for changes to Java classes. IntelliJ/Java does a hot swap in memory, so your Java changes are seen.
Now for JSPs. Write an ant target that copies the JSPs into the deployed exploded war.
For some reason, when ant does the copying, WLS doesn't freak out and decide to restart the web application. I have no idea why. I did a directory compare when IntelliJ did the copying, and the only thing that had changed was the JSP I had modified.
Anyways that's one solution.
The other is, as my colleague tested out, run in Production mode, and have the jsp reload check parameter set to 0, which means check the JSPs always. This is needed because in Production mode, -1 is the default value, which means never check for JSP changes.

Hot deployment of class files (non-EJB)

Also posting to the servlet newsgroup.
"Craig Ambrose" <[email protected]> wrote in message
news:[email protected]..
>
I am using WebLogic 6.1 and am interested in using auto-deployment indevelopment
mode of JSPs and class files that those JSPs rely on. I have a simpleWebLogic
application that gets deployed using the exploded directory format andwhen I
modify the JSPs or the class files that they use everything reloadsproperly and
a newly modified class file will be reloaded the next time the pageutilizing
the Java class is requested.
I have a much more complicated application (the one I am really doing workon)
and I can't get the hot deploy of the class files to take effect. The JSPswill
reload but I can't seem to cause the class loader to reload any changedclass
files. If I use the WebLogic Console and un-deploy and then re-deploy theapplication
then the class files will be reloaded, but I thought that wasn't necessaryfor
hot deployment. This complex application stores many things in the HTTPsession
context. I am wondering if that has an effect on the class loader fordependant
class files.
I'm pretty sure it is not a configuration issue as I have it working forthe simple
application. I have the application deployed under the.\config\<domainname>\applications
directory and am using the exploded directory format with the class filesalso
exploded in the WEB-INF\classes directory.
Any insights on dependancies of the hot depployment would be helpful.

How to call a class file in a jsp without deploying anything in j2ee

Hi,
I am new in J2EE. I have some jsps, which I configured using web.properties(documentroot=c:/jsp/). I am able to get
those pages by the web browser. I have some import statements in some jsps, now I
am trying to access those page but it is failing, it says
org.apache.jasper.JasperException: Unable to compile class for
JSPD:\j2sdkee1.3\repository\pradip\web\_0002fLogin_0002ejspLogin_jsp_0.java:1:
Class com.gui.UPMGuiGlobalConstants not found in import.
import com.gui.UPMGuiGlobalConstants;
Actually I have not deployed any class file or jsps.. Now my question is can I access
these jsps without deploying anything, like can I put my .jar file in any j2ee
directory(like lib or anywhere else, I already tried after putting in /lib) and restart the
j2ee and use it. So how can I call a class file from a jsp without any kind of
deployment?
Please send me the reply as soon as possible.
Regds,
Pradip

After you put the jar containing the class to import into the WEB-INF/lib directory, you still need to include it in the jsp.
Putting the jar into the lib dir, will make it available to the vm, but as in any other java class, you still need to import it into the class, that the jsp will be compiled into.
And you do that by putting
<%@page import="com.gui.UPMGuiGlobalConstants" %>somewhere near the top of your jsp. (well you don't need to put it there, but it good style ;)
That should do it.

How to convert a .jsp to a .java/.class file for use in peoplesoft

Hi java/jsp experts,
I want to convert a .jsp to a .java/.class file. is there a tool available, please let me know if you have any pointers....
or can i do it manually:
these are a few lines that the .jsp contains, and i would like to translate this to be in .java/.class format:
<%@ page import="sun.misc.BASE64Encoder, javax.crypto., javax.crypto.spec."%>
<%@ page import="java.util.StringTokenizer" %>
<%@ page import="java.util.Map" %>
<%!
sb.append("<input type=\"hidden\" name=\"orderPage_serialNumber\" value=\"");
sb.append(serialNumber);
sb.append("\">\n");
return sb.toString();
%>
how can i translate the above import statements and html elements from jsp to java, please let me know.
Once i have the .java file created from the .jsp, I will compile .java to create the .class file and invoke the .class in peoplecode by using java apis available in peopletools.
Thanks in advance.

Is there a way convert a binary .exe file( compiled by
another compiler) into Java .class/.jar file ? Anyone
know of a free program that can do this?It's not possible. There are many decompilers and disassemblers for Java but nothing will take you from ANY binary to Java source. It would be the end of computing as we know it and the beginning of a new era -:)

Conversion of a .jar OR a .class file into a .exe file

Can anyone tell me as how to convert a .jar OR a .class file into a .exe file
I need to know as soon as possible.

Okay I will tell you the steps:
Look in the top right hand corner of the page.
There should be a box with a red title line. Inside the
title should be the letters 'S E A R C and H'.
In the white part of th box should be a smaller line, in which you can type.
type in "conversion .jar .class .exe" or some similar string.
Then click on the button next to the text box.
Read the page of results you get.
Click on the first link and read what is said on the connecting page.
If that doesn't help, use your browser's back button and click on the next link, and repeat util your question is answered.

How to include a .class file in a jsp page

hi everyone,
i know the syntax as:
<%@ include file = "filename.class" %>
then at run time the server could not find the class file
if i use,
<%@ page import = "FileName.class" %>
then also the same problem persists
& if i use
<jsp:include page = "Relative address"/>
the problem still remains as it is...
please help me out...i am working on developing an EJB application in which client interacts with server's Stateful session bean through a jsp page...it is necessary for me to include the home interface class file in my jsp page.
P.S. do not suggest me to include the class file in a package & then use
<%@ page import = "packageName.ClassFileName" %>
i
Edited by: Ankit_JIITU on 6 Jul, 2008 1:55 AM

Ankit_JIITU wrote:
i have already included the remote interface class file by <%@ page import = "University.RemoteInterfaceName" %>in my jsp page ...
if i try to make a new package called test & then include my home interface in that package...i need to import University.*to generate the class file of my home interface ; but the class file generation is not taking place as i am getting the error..
"package University does not exist".How can i overcome this problem. The package University, which you are trying to import, must be in the classpath. If you removed it then you will have to add it back.
i have tried my best..but tell me if there's any possible way of including a class file in the jsp page without involving a package.No, there isn't.
If not,then pls help me to generate the class file of my home interface within a package called test.Read the New To Java Tutorial and understand how packages work.
>
i am assuming that u have a deep knowledge of developing EJB applications.

How to access variables declared in java class file from jsp

i have a java package which reads values from property file. i have imported the package.classname in jsp file and also i have created an object for the class file like
classname object=new classname();
now iam able to access only the methods defined in the class but not the variables. i have defined connection properties in class file.
in jsp i need to use
statement=con.createstatement(); but it shows variable not declared.
con is declared in java class file.
how to access the variables?
thanks

here is the code
* testbean.java
* Created on October 31, 2006, 12:14 PM
package property;
import java.beans.*;
import java.io.Serializable;
public class testbean extends Object implements Serializable {
public String sampleProperty="test2";
public String getSampleProperty() {
return sampleProperty;
}jsp file
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ page import="java.sql.*,java.util.*"%>
<html>
<head>
<title>Schedule Details</title>
</head>
<jsp:useBean id="ConProp" class="property.testbean"/>
<body>
Messge is : <jsp:getProperty name="msg" property="sampleProperty"/>
<%
out.println(ConProp.sampleProperty);
%>
</body>
</html>out.println(ConProp.sampleProperty) prints null value.
is this the right procedure to access bean variables
thanks

Trying to run java class files from my jsp

I am having difficulty running java files from my jsp. I have compiled my two java classes and inserted them onto my server in the webapps/WEB-INF/classes/scripting directory and have imported scripting.* into my jsp page. The files both compiled ok before the class files were loaded onto the server but when I rty to run the jsp from the server, I keep getting a compiler error. Thanks in advance
Iob

Here are the few question
1) Does your java classes which u created is declared under package scripting. *.class files are to be places under the WEB-INF/classes directory only. Not under scripting. But if you java classes say are under a package called a.b. Then you need to put under classes\a\b\.

How use class file in jsp(very urgent)

i have class file called birds (birds is actually a xslt file transformed to java class file) now this class file i have to use in my jsp file. how can i use them. if possible can any one give me sample code please very urgent
can any one help me

java files
import org.w3c.dom.*;
import javax.servlet.http.*;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
import java.io.*;
public class XmlParser
     public String XmlParser()
          try
String strXML= "employee.xml";
               String xslFile = "employeeId.xsl";
               TransformerFactory tFactory = TransformerFactory.newInstance();
               StreamResult theTransformationResult = new StreamResult( new ByteArrayOutputStream() );
               Transformer transformer = tFactory.newTransformer(new StreamSource(xslFile));
               transformer.transform(new StreamSource(new StringReader(strXML)), theTransformationResult);
               String output = theTransformationResult.getOutputStream().toString()
          catch(Exception e)
               System.out.println(" ***** XmlParser.XmlParser ERROR ***** " + e);
return output;
using class files in jsp
<%@ page import="com.qqqq.aaaa.XmlParser"%>
<%
     XmlParser xmlParser          =     new XmlParser();
out.println(xmlParser.XmlParser());
%>
i think it will help you.

How to include applet in jsp if applet.class file in another folder

hi,
i'm getting problem when my applet.class file is not with its appropriate jsp file. i'm using jsp :plugin tag.it work when jsp file n apllet.class file at same location.
in short my jsp file is at location /webapps/jsp-examples/myproject/includeDemo.jsp
n applet i want in a WEB-INF folder.
Plz help me to solve this..
or give me other way that an applet can be loaded in jsp page n applet should be in WEB-INF file..
Help me for this

http://forum.java.sun.com/thread.jspa?threadID=5148764&messageID=9556205

Importing .class file into jsp file

i am unable to import a .class file into my .jsp file
please give me the correct method to import and also tell me where to deploy the .class file

i am unable to import a .class file into my .jsp
file
please give me the correct method to import and also
tell me where to deploy the .class filehttp://www.apl.jhu.edu/~hall/java/Servlet-Tutorial/Servlet-Tutorial-JSP.html#Section5

JSP to class file conversion

Similar Messages

Maybe you are looking for