Is it true that JSP creates Servlet java code?

I am working with JSP.
My web server is tomcat.
Is it true that JSP creates Servlet java code of JSP files when it executes? If so how can I view them?

Yes..it is true..
to find out..do this..
on purpose leave a bug in ur jsp that will generate a compilation error. So in ur browser some exception will be shown.That exception message will have the clue to the java file (e.g
error in compiling _XYZ.java).You can manually search for this file..
(If the copilation is successful, then this java file is deleted by the server.)

Similar Messages

Using jsp variable in java code

Hey guys,
I need some help hope you guys can help me.
I've declared a variable "error" in a jsp. how do I access this variable in the java code whice resides in the same jsp page.
I know I can use java variable in jsp code using
<%= sVariable %>
where sVariable was declared in the java code. but how do I access a jsp variable in java code??
Thanks very much in advance

Thanks for the reply.
This is what I want to do.
I've declared a variable "error" using <c:catch var="error">I want to check the value of this variable and suppose if it contains XYZ (error variable will have a long string so I just want to check if it contains a specific value) I want to do step1 and if the variable of error is not XYZ I want to do step 2
Problem is I dont know how to check if error contains the XYZ in jsp thats why I thought java code would help here.
Can you guys suggest a better way to solve my problem.
Thanks again

How do get your applications that you create in x code to you iphone

How do you get your applications that you create in x code to your iphone so it can be tested?

Use the resources you paid for in the iOS Dev Center...
Xcode Overview
Run Your App

How to keep the servlet java code the JSP engine generated?

Hello there!
          I am using some JSP in a web application, and would like to take a llok
          at the servlet java files th weblogic JSP engine generated.
          In my weblogic.properties file I have the following line:
          "# Set up WebLogic JSP properties
          weblogic.httpd.register.*.jsp=weblogic.servlet.JSPServlet
          weblogic.httpd.initArgs.*.jsp=\
          pageCheckSeconds=1,\
          compileCommand=F:/VisualCafeEE/bin/sj.exe,\
          workingDir=F:/weblogic/myserver/classfiles,\
          verbose=true,\
          keepgenerated=true"
          However, the only things I can find are the class files compiled from
          the servlet java files.
          Any suggestions?
          Thanks.
          Jeff.


Moerover, if you follow the example web.xml Weblogic provides
          (http://www.weblogic.com/docs51/classdocs/sample_web_xml.html), the parser
          would complaint big time.
          The <servlet> and <context-param> tags have to be switched.
          Jeff
          "John J. Feigal" wrote:
          > I'm not sure why, but specifying keepgenerated=true in weblogic.properties
          > did not do the job for us.
          >
          > We had to add the following to our application's web.xml file:
          >
          > 
          > <context-param>
          > <param-name>weblogic.jsp.keepgenerated</param-name>
          > <param-value>true</param-value>
          > </context-param>
          >
          > --
          > John J. Feigal Voice (651)766-8787 (main)
          > Sr. Technical Consultant (651)766-7249 (direct)
          > Ensodex, Inc. Fax (651)766-8792
          > 4105 N. Lexington Ave., Suite 150 email [email protected]
          > Arden Hills, MN 55126 WebSite http://www.ensodex.com
          >
          > "Jong Lee" <[email protected]> wrote in message
          > news:[email protected]...
          > >
          > > You have the init arg "keepgenerated" tunred on in weblogic.properties.
          > > The java file should be kept in the same directory of your jsp file.
          > >
          > > You can also use "jspc" to generate the java source.
          > > i.e:
          > > "java weblogic.jspc -keepgenerated yourjspfile"
          > >
          > >
          > >
          > >
          > >
          > > Jeff Wang <[email protected]> wrote:
          > > >Hello there!
          > > >
          > > >I am using some JSP in a web application, and would like to take a llok
          > > >at the servlet java files th weblogic JSP engine generated.
          > > >
          > > >In my weblogic.properties file I have the following line:
          > > >
          > > >"# Set up WebLogic JSP properties
          > > >weblogic.httpd.register.*.jsp=weblogic.servlet.JSPServlet
          > > >weblogic.httpd.initArgs.*.jsp=\
          > > > pageCheckSeconds=1,\
          > > > compileCommand=F:/VisualCafeEE/bin/sj.exe,\
          > > > workingDir=F:/weblogic/myserver/classfiles,\
          > > > verbose=true,\
          > > > keepgenerated=true"
          > > >
          > > >However, the only things I can find are the class files compiled from
          > > >the servlet java files.
          > > >
          > > >Any suggestions?
          > > >
          > > >Thanks.
          > > >
          > > >Jeff.
          > > >
          > >

Java code and jsp interaction

Hi,
How does one interact between java code and jsp page.That is, if the java code does say database connection, the web page should tell that the connection has been made,just like an application but this will work on the web server not in the console.Kindly let me know.
As

Just curious but where do these questions come from? A course you are taking or you are building something for a hobby?
If you are building some small simple web-app it's probably quicker to embed code right onto your JSP page.
There are various levels of abstracting your web-app separating display from logic from the model.
The following are techniques from simple web-apps to more complicated ones.
-Embedding script right into your JSP
-Using beans
-Using custom tags ( I think there are some standard ones now, struts seems to be a popular buzzword)
-Including a servlet to handle your requests redirect, update bean content grab info form your database and forward to a JSP. (Read up on model 2 architecture.)
To include as much detail as possible would be to write a book. Fortunately many have so I don't have to fit one in this tiny reply box.
Hope that was somewhat useful.

Error creating servlet context

Hello, there!
          I am trying to run a web app on WebLogic. The application contains some
          EJBs, several JSP's and a controller servlet. I have the EJB's
          deployed, and both webApp and servlet (and its initArgs) registered in
          "weblogic.properties". However, when I start weblogic, there is a
          message saying that "error creating servlet context for the web
          application". It seems that weblogic is looking for a file called
          "weblogic.xml" and trying to create servlet context from it. How to
          create this "xml" file? If it has to be created manually, what are the
          required tags?
          Thanks!
          Jeff


Search your WL install directory for weblogic-web-jar.dtd.
          Cameron Purdy
          "Jeff Wang" <[email protected]> wrote in message
          news:[email protected]..
          > Hello, there!
          >
          > I am trying to run a web app on WebLogic. The application contains some
          > EJBs, several JSP's and a controller servlet. I have the EJB's
          > deployed, and both webApp and servlet (and its initArgs) registered in
          > "weblogic.properties". However, when I start weblogic, there is a
          > message saying that "error creating servlet context for the web
          > application". It seems that weblogic is looking for a file called
          > "weblogic.xml" and trying to create servlet context from it. How to
          > create this "xml" file? If it has to be created manually, what are the
          > required tags?
          >
          > Thanks!
          >
          > Jeff
          >

Urgent: problem with sharing HttpSession object between Jsp and servlets.

Hi,
          We are using weblogic 6.0 sp2.
          I m setting a particular object in session in a servlet using
          session.setAttribute() but when i try to retrieve that object using
          session.getAttribute() in a jsp page the value of that object is null. Is
          there any way to configure HttpSession in weblogic so that jsps and servlet
          can share the same session? Or any workaround for this problem.
          Any help in this regard is appreciated.
          Thanks
          -Shree


Just a guess, but it sounds like you have cookies turned off and are not
          using encodeURL. Try enabling cookies and see if that solves the problem.
          Also, it is generally good practice to use encodeURL to protect yourself
          from users who disable session cookies.
          Here's how we use encodeURL in our Servlets:
          gotoPage("/jsp/someJSP.jsp");
          private void gotoPage( String address,
          HttpServletRequest request,
          HttpServletResponse response )
          throws ServletException, IOException
          RequestDispatcher dispatcher =
          etServletContext().getRequestDispatcher( response.encodeURL( address ));
          dispatcher.forward( request, response );
          "Shree Unde" <[email protected]> wrote in message
          news:[email protected]..
          > Hi,
          > We are using weblogic 6.0 sp2.
          > I m setting a particular object in session in a servlet using
          > session.setAttribute() but when i try to retrieve that object using
          > session.getAttribute() in a jsp page the value of that object is null. Is
          > there any way to configure HttpSession in weblogic so that jsps and
          servlet
          > can share the same session? Or any workaround for this problem.
          > Any help in this regard is appreciated.
          > Thanks
          > -Shree
          >
          >

Do you know how to call RDF with java code?

Say me a tip!
Environment:
Linux, Reports 6i,java beans, jsp
My mission is to run a report with java code.
But I don't know how to.
Basic flow is :
On web browser, call jsp a program and
that jsp call a java module,
and the java module call a reports RDF with parameters
I don't need reponse message from rwcgi60 or rwrun60.

hello,
the easiest way is to use the regular HTTP request to either the servlet or the CGI to run a report request from within a java-class.
regards,
the oracle reports team --pw

Error while sending Email through Java Code in OIM

Hi All,
I have created a java code using tcEmailNotificationUtil, and integrated the same with the adapter.
I am triggering this adapter when an approval process gets completed.
As soon as the approval process gets completed my email task is triggering but the task is getting rejected.
I have checked my system configuration for mail server settings.Everything seems working fine.
Can you please help me in this issue how to debug?
Thanks in advance.

Hi,
Here is my log file:
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/insertTaskHistory left.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/run entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: ReIssueAuditMessage/execute entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: ReIssueAuditMessage/initialize entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/getAttribute entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/getAttribute left.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/getUtility entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/getUtility left.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.ACCOUNTMANAGEMENT] - Class/Method: tcUtilityFactory/getRemoteUtility - Data: moUtil - Value: Thor.API.Operations.tcAuditOperationsClient
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: ReIssueAuditMessage/initialize left.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: ReIssueAuditMessage/processAllByIdentifier entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped entered.
DEBUG,25 Apr 2011 10:40:00,099,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped left.
DEBUG,25 Apr 2011 10:40:00,100,[XELLERATE.DATABASE] - select A.* from (select aud_jms_key, aud_class, identifier from aud_jms order by aud_jms_key) A where rownum <= ?
INFO,25 Apr 2011 10:40:00,101,[XELLERATE.PERFORMANCE] - Query: DB: 1, LOAD: 0, TOTAL: 1
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped entered.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped entered.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isStopped left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: ReIssueAuditMessage/execute left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/run left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isSuccess entered.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SCHEDULER.TASK] - Class/Method: SchedulerBaseTask/isSuccess left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SERVER] - Class/Method: SchedulerTaskLocater /removeLocalTask entered.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SERVER] - Class/Method: SchedulerTaskLocater /removeLocalTask left.
DEBUG,25 Apr 2011 10:40:00,102,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/updateStatusToInactive entered.
DEBUG,25 Apr 2011 10:40:00,104,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/updateStatusToInactive left.
DEBUG,25 Apr 2011 10:40:00,104,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/updateTaskHistory entered.
DEBUG,25 Apr 2011 10:40:00,106,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/updateTaskHistory left.
DEBUG,25 Apr 2011 10:40:00,106,[XELLERATE.SERVER] - Clearing Security Associations with thread executing Scheduled task
DEBUG,25 Apr 2011 10:40:00,106,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/run left.
DEBUG,25 Apr 2011 10:40:00,106,[XELLERATE.SERVER] - Class/Method: QuartzWrapper/execute left.
and I just wanted to ensure that my coding part is also fine.
Posting the code even:
tcDataProvider ioDatabase = new tcDataBaseClient();
tcEmailNotificationUtil sendMail = new tcEmailNotificationUtil(ioDatabase);
sendMail.setBody("Sample Message");
sendMail.setSubject("subject");
sendMail.setFromAddress("fromemailaddress");
sendMail.sendEmail("recepient");
Thanks in Advance.

How to generate the java code of a table's data model by parsing it's FXML?

I have know how to create FXML file that describes a table. Meanwhile, according to [Oracle Tutorial|http://docs.oracle.com/javafx/2/fxml_get_started/fxml_tutorial_intermediate.htm#CACFEHBI], it is a best practice to implement a class that defines the data model and provides methods and fields to further work with the table.
However, It's rather cumbersome and time consuming to typing the code. So, is there any tools that can generate the java code of a table's data model by parsing it's FXML describe file?
Regards, Qinn
Edited by: 854675 on Oct 7, 2012 11:02 PM

I have know how to create FXML file that describes a table. Meanwhile, according to [Oracle Tutorial|http://docs.oracle.com/javafx/2/fxml_get_started/fxml_tutorial_intermediate.htm#CACFEHBI], it is a best practice to implement a class that defines the data model and provides methods and fields to further work with the table.
However, It's rather cumbersome and time consuming to typing the code. So, is there any tools that can generate the java code of a table's data model by parsing it's FXML describe file?
Regards, Qinn
Edited by: 854675 on Oct 7, 2012 11:02 PM

Calling functions of the inner class in .java code file

Hello,
I created a .java code file in Visual J#.Net and converted it into
the application by adding the "public static void main(String args[])"
function.
I have created the two classes one extends from Applet, and the other
extends from Frame. The class which I inherited from the Frame class becomes
the inner class of the class extended from the Applet. Now How do I
call the functions of the class extended from Frame class - MenuBarFrame
class. the outline code is
public class menu_show extends Applet
------init , paint action function---------
public class MenuBarFrame extends Frame
paint,action function for Menu
public static void main(String args[])
applet class instance is created
instance of frame is created
Menu , MenuBar, MenuItem instance is created
and all these objects added
I have Created MenuBarFrame class instance as
Object x= new menu_show().new MenuBarFrame
????? How to call the functions such as action of MenuBarFrame class - what
should be its parameters??????
}

Here's how I would do it:
interface Operation {
    public int op(int y);
class X {
    private int x;
    public X(int x) {
        this.x = x;
    private class Y implements Operation {
        public int op(int y) {
            return x+y;
    public Operation createOperation() {
        return new Y();
    public static void main(String[] args) {
        X app = new X(17);
        Operation f = app.createOperation();
        System.out.println(f.op(-11));
}Your code, however, has some serious "issues". You typically don't
instantiate an applet class -- that's the job of the applet viewer or Java plugin
your browser is using. If you instantiate the applet directly, you're going
to have to supply it an AppletStub. Do you really want to go that way?
Again, use an applet viewer or browser, or better yet, why write applets at all?

Add numberconverter to inputtext by java code

my page is dynamically created by java code.
how can i add a numberconverter to an inputtext by code?
HtmlInputText intext = new HtmlInputText();
     NumberConverter ncnv =new NumberConverter();
               ncnv.setCurrencyCode("");
               ncnv.setGroupingUsed(true);
               ncnv.setMaxIntegerDigits(11);
               ncnv.setType("currency");
.

Use setConverter().

Java code vrs JSTL

I'm beginning to study jsp I have a knowledge in the Java language, let me know if you need to learn JSTL for JSP pages or just know java
is more easy for me make the JSP page with java code. thanks for you answers

981159 wrote:
so I'm making a mistake when I'm studying JSP JSF should study?It's difficult to say if you are or not. It used to be a common question in enterprise architecture exams. When do you use JSP vs using JSF.
These days the emphasis is on ease of development with many frameworks striving to solve as many common developer problems as they can so you can concentrate on writing only the business logic for your project. With plain JSPs you need to handle many cross cutting concerns yourself and develop filters and application controllers to deal with those concerns (otherwise you reuse by copy paste!). Because JSF (and many other frameworks) is a full MVC framework they already provide all those filters and application controllers while also improving the view with components, validation, templating and asynchronous request processing. Perhaps there are applications out there that don't need any of these, if they exist then those are the applications one could consider using plain JSPs for. It would be a shame if a developer has to take time from writing and testing business logic to developing functionality already made available by most frameworks. Also the arrival of Play! and other stateless MVC frameworks makes it even less likely that you'll find an application where an honest architecture choice process will pick JSP as most applicable.
But your question is should you learn it? Well, there are lots of companies in the industry that have systems that use JSPs either alone or with other frameworks. Not only that but some of those companies have not changed their architecture choices to move away from it for various plausible reasons. Then there is products developed using JSP based technologies like Oracle ADF which uses JSF 1.2 (which used JSPs). If you intend to work for those companies or with those products at some point then you'll have to learn it to be most effective at your job. My suggestion was not necessarily to stop learning it, but to be aware of where JSPs stand in relation to other technologies.

Java code to show current date & time on PDF

Hi,
I have no experience with Java whatsoever and I am hoping somebody out there will be able to help me. Basically we are in the process of uploading all our SOP's to a public share on our Network. Due to regulatory reasons everytime the document is opened it will need to show the current date which will also show when printed. I have adobe 9 pro and see there is a area that you can input Java code so with the power of Java im sure this can be done. Ideally this would be like a watermark across all the page diagonally faded into the background of each page on the PDF.
Only Valid on Date of Printing
Date Printed: <Current Date>
Any help would be much appreciated.

Are you sure you haven't committed one of the cardinal sins of the Java-ignorant by confusing it with Javascript?

Pass Map to Java Code

I want to pass a map using Xpress to java code and it seems to be getting error. The java code is suppose to make use of the input hash map, process it, create another hash map and return it back to the calling code. I am having trouble in passing the map created using xpress to the java code (i.e. no problem if i tried to do a similar process by inputing a string and getting a string back)
Sample Xpress code:
===============
<block>
<set name='myInput'>
<map>
<s>First Key</s>
<s>Key 1 Value</s>
<s>Second Key</s>
<s>Key 2 Value</s>
</map>
</set>
<set name='return'>
<invoke name='myMethodName' class='com.Test.ClassName'>
<ref>myInput</ref>
</invoke>
</set>
<ref>return</ref> ==> should get back HashMap created using java code
</block>
Sample Java code
=============
public HashMap myMethodName(HashMap hMapInput) {
HashMap hm = new HashMap();
hm = .....do something with input hMapInput
.....create a new map
return hm;
}

your code looks ok, By the way what error did you get?
Edited by: gdrien on Nov 8, 2007 4:29 PM

Is it true that JSP creates Servlet java code?

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