Request in JSP page

Hi
it east can be elementary what i ask but as even 2 days i test
so
it's just a request to acces base in JSP page
at this level i get an integer variable numope who had value, and the the name of the column is Nope
so the request is ("select * from body where Nope='numope' ");
i tryed also ("select * from body where Nope=numope ");
but the both it doesn't return a result, but if i test this with a variable it works
the test is something like ("select * from body where Nope=49 ");
i get a result i need
thanks

Construct the SQL string something like this:
"select * from body where Nope=" + numope

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Getting troubles in getting the JSP page

hi friends,
Let me tell u first i m using Tomcat 5.5 and Internet Explorer .
I think i have some problem in Tomcat. Coz I have made an JSP page which has a simple coding as follows
<%@ page language="java" contentType="text/html" %>
<html>
<body bgcolor="green">
<font size=5 color="red">
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I hope i m clear in communicating my problem.
Please suggest some solution what to do.
with regards
Arunabh

save the above as test.jsp ..place it in webapps....
important thing is check the path name u give in ur
url
http://10.32.246.55:8080/Activit/tex.jsp... in
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so no need to mention webapps in url.... mention the
ip address ..if u r runnin the application on the
system where tomcat is installed then instead of ip
address u can mention as localhost .. do
mention port no. also ... think by default port no is
8080...
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I am developing a web application using jsp pages. In this application i want to display some information in a seperate window. For this i created a class which extends JFrame. This class makes also use of the singleton principle.
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Andre,
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regards,
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In JSP pages request.getParameter returns null

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<BODY>
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%>
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Thanks

If I'am right you have misplaced the opening body-tag of your first jsp-page.
The opening body-tag should follow after the closing head tag .
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<html>
<head>
</head>
<body>
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Unable get complete filepath from jsp page using request.getParameter()

Hey all,
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FILE NAME : TEST
FILE PATH : test.txt
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at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at java.io.FileReader.<init>(FileReader.java:55)
at com.test.TestServlet.processRequest(TestServlet.java:39)
at com.test.TestServlet.doPost(TestServlet.java:75)
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<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
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<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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FILE SELECT : <input type="file" name="myfile" value="" width="25" /><br><br>
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Servlet Code :
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, FileNotFoundException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
String filename = request.getParameter("filename");
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out.println("<head>");
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File f = new File(filepath);
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out.close();
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
Needed Output :
FILE NAME : TEST
FILE PATH : C:\\Temp\\test.txt
Any suggestions Plz??

As the [HTML specification|http://www.w3.org/TR/html401/interact/forms.html] states, you should be setting the enctype to multipart/form-data to be able to upload files to the server. In the server side, you need to process the multipart/form-data binary stream by parsing the HttpServletRequest#getInputStream(). It is a lot of work to get it to work flawlessly. There are 3rd party API's around which can do that for you, such as [Apache Commons FileUpload|http://commons.apache.org/fileupload] (carefully read the User Guide how to use it).
You can also consider to use a Filter which makes use of the FileUpload API to preprocess the request so that you can continue writing the servlet code as usual. Here is an example: [http://balusc.blogspot.com/2007/11/multipartfilter.html].

Error when requesting JSP page

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service.
Has anyone seen this error or does anyone know what events cause this
problem?
Thanks,
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There is a big difference between this;
http://www.mydomain.com/blabla
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http://www.mydomain.com/blah.jsp
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blah.jsp - is the name of a JSP page. When you reference this page the way you did above, you are not stating where the JSP page is located. It would be locatied in the "http://www.mydomain.com/blabla/blah.jsp" location.

Struts tag for request.setAttribute() in a jsp page

Hello All
Does anyone know struts tag that can be used for request.setAttribute() in a jsp page?
Thanx in advance.

Well
<bean:define id="foo" name="newsIdAttribute" scope="request" type="java.lang.String" />is equivalent to
<%
(java.lang.String) foo = (java.lang.String)request.getAttribute("newsIdAttribute");
%for setting bean properties you might have to use
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Hope this might answer your question :)
REGARDS,
RaHuL

Define a request attribute for a JSP Page

Where do I need to define the request parameters
that will be read by my JSP Page?
If I have a JSP:
<% String userName = request.getParameter("name") %>Where shud the attribute name be defined so that its value is read
by the JSP Page?
Does it need to be defined in the tag lib as an attribute?

Where do I need to define the request parameters
that will be read by my JSP Page?It can be a HTML form field in another JSP from which the request comes to this JSP. Alternatively, it can be a parameter passed through the URL like
http://myhost/myapp/myjsp.jsp?name=Richard

Second request to a JSP page

When a second request is made to the JSP page, is the request sent to the servlet directly or is it handled by the JSP page. The question comes bcos when the JSP page is requested for a second time, a copy of the .class file is already available in the servlet container.

hello,
Even the first "request" is handled by the generated servlet! On to point, The JSP page GETS COMPILED ONLY ONCE after you install/modify it ,or on restart of server.Once a request is send to the jsp page ,the server checks for the time flag of the JSP file,and if it finds that the jsp page is modified,it recompiles the page,and send the request to the generated servlet for processing.Else it handles over the request to new servlet instance of precompiled servlet class.Note the diff in latency when you first call the JSP page and subsequent calls.This is because of foresaid reason.
Just 4 fun try deleting the .class files in works folder,if u work on a tomcat.
cheers
[email protected]

Request dispatcher and jsp pages called from servlets

          Given the following webapp directory structure:
          root/
          jsp/
          ..all jsp files
          web-inf/
          classes/
          /servlets
               ..all servlet files
          /com
          ..all other java class files
          I have the jsp directory coded as: jspdir = "/jsp/" (and have tried variations
          on this theme)
          I try to open a new jsp page with the following code in a servlet in the above
          servlet directory:
               RequestDispatcher rd;
               rd = getServletContext().getRequestDispatcher(jspdir + myjsp.jsp);
               rd.forward(req, res);
          rd continues to return null.
          The jsp pages are not registered in the web.xml file for this webapp, if that
          makes any difference.
          Does anyone have any suggestions?
          [problem.txt]


I create a small sample and put these files into /jsp in my war context
          it works fine, please send me the example code you are using and the
          environment description of the deployed application
          I attached my samples, that work
          Filip
          ~
          Namaste - I bow to the divine in you
          ~
          Filip Hanik
          Software Architect
          [email protected]
          www.filip.net
          "Bill Blackmon" <[email protected]> wrote in message
          news:[email protected]...
          >
          > Yes, I am able to access the jsp pages with the url listed.
          >
          > "Filip Hanik" <[email protected]> wrote:
          > >The weblogic servlet engine, is by default mapping anything that ends
          with
          > >*.jsp to be a JSP.
          > >so there shouldn't be a problem. You didn't answer my first question,
          > >are you able to access your JSP through the browser?
          > >http://localhost:7001/root/jsp/myjsp.jsp
          > >
          > >Filip
          > >
          > >--
          > >~
          > >Namaste - I bow to the divine in you
          > >~
          > >Filip Hanik
          > >Software Architect
          > >[email protected]
          > >www.filip.net
          > >"Bill Blackmon" <[email protected]> wrote in message
          > >news:[email protected]...
          > >>
          > >> The code you are reading in the message here was pasted in and
          > >> looks bad, so maybe that's what you are referring to? The dispatcher
          code
          > >is called
          > >> in the service() method of the servlet.
          > >> I have a suspicion that the jsp directory needs to be defined someplace
          > >-
          > >weblogic.properties
          > >> or web.xml?, though I don't see this in any of the examples that come
          > >with
          > >the product.
          > >>
          > >>
          > >>
          > >> "Simon Ng" <[email protected]> wrote:
          > >> >
          > >> >Hello Bill,
          > >> > Did you put a <BR>
          > >> >return;
          > >> ><BR>
          > >> >statement right after the dispatcher.forward() statement? Well, I am
          > >assuming
          > >> >your
          > >> >code is in the doPost() or doGet() methods.
          > >> >
          > >> >Simon
          > >> >
          > >> >
          > >> >"Filip Hanik" <[email protected]> wrote:
          > >> >>if you do http://localhost:7001/root/jsp/myjsp.jsp
          > >> >>
          > >> >>do you get a result?
          > >> >>
          > >> >>make sure you have the right character case on the filename.
          > >> >>
          > >> >>Filip
          > >> >>
          > >> >>--
          > >> >>~
          > >> >>Namaste - I bow to the divine in you
          > >> >>~
          > >> >>Filip Hanik
          > >> >>Software Architect
          > >> >>[email protected]
          > >> >>www.filip.net
          > >> >>"Bill Blackmon" <[email protected]> wrote in message
          > >> >>news:[email protected]...
          > >> >>>
          > >> >>> Given the following webapp directory structure:
          > >> >>> root/
          > >> >>> jsp/
          > >> >>> ..all jsp files
          > >> >>> web-inf/
          > >> >>> classes/
          > >> >>> /servlets
          > >> >>> ..all servlet files
          > >> >>> /com
          > >> >>> ..all other java class files
          > >> >>>
          > >> >>>
          > >> >>> I have the jsp directory coded as: jspdir = "/jsp/" (and have tried
          > >> >>variations
          > >> >>> on this theme)
          > >> >>> I try to open a new jsp page with the following code in a servlet
          > >in
          > >> >the
          > >> >>above
          > >> >>> servlet directory:
          > >> >>> RequestDispatcher rd;
          > >> >>> rd = getServletContext().getRequestDispatcher(jspdir + myjsp.jsp);
          > >> >>> rd.forward(req, res);
          > >> >>>
          > >> >>> rd continues to return null.
          > >> >>>
          > >> >>> The jsp pages are not registered in the web.xml file for this
          webapp,
          > >> >>if
          > >> >>that
          > >> >>> makes any difference.
          > >> >>>
          > >> >>> Does anyone have any suggestions?
          > >> >>>
          > >> >>
          > >> >>
          > >> >
          > >>
          > >
          > >
          >
          [filipInclude.jsp]
          [filipForward.jsp]
          [filip.jsp]

How to use single JSP page for multiple users.

Hi ,
I am doing messenger kind of program using JSP and tomcat server.
When i type message it is showing in the some div. If some other person request for the same page by giving my IP address and jsp page, he should able to see what i have typed on page so far.
how can i do that one . can any one guide me .
Thanks in advance.

SuneelGoodatJava wrote:
Hi ,
I am doing messenger kind of program using JSP and tomcat server.
When i type message it is showing in the some div. If some other person request for the same page by giving my IP address and jsp page, he should able to see what i have typed on page so far.
how can i do that one . can any one guide me .
Thanks in advance.HTTP is a request/response protocol. You can't do what you're suggesting without "pushing" what you type to all the other users. That's not the way HTTP works. Maybe an applet and servlet.
%

Error while running a jsp page : "jasper run time error"

hii
I'm facing trouble while running some jsp page . the error is as follows:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
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     org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346)
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     org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
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Unable to find a javac compiler;
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Perhaps JAVA_HOME does not point to the JDK
     org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106)
     org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935)
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note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
Apache Tomcat/5.0.28
The set up in my system (path set up is as follows):
Catalina home: C:\ apache software foundation\Tomcat 5.0
Classpath: %java_home%;C:\j2sdk1.4.2_03\bin;
Javahome: C:\ j2sdk1.4.2_03\jre;
path: C:\ j2sdk1.4.2_03\bin
<there are other variables available in path, along with that I have added the j2sdk1.4.2_03\bin in path".
So if u have any way out for it please let me know.

I think you only need to add: c:\j2sdk1.4.2_01
you have specified jre on the end of your path, it is not the jre that is required, but the jdk.
If you are using startup.bat and shutdown.bat (or .sh on Linux) you can amend the files with a text editor (open the startup.bat in notepad), like so:
@echo off
set JAVA_HOME=c:\j2sdk1.4.2_01
if "%OS%" == "Windows_NT" setlocal
I this will start Tomcat with the correct settings, regardless of your environment settings.

Request in JSP page

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