Servlet forward problem

Hi
I have a servlet which is forwarded to JSP file.The JSP got content type as XML.But it gives error like "System cannot understand the specified encoding".but when i takeout the content type its works fine.
can anyone give some ideas pls?

Hi
I am getting the following error
System does not support the specified encoding. Error processing resource
from servlet i am doing following
res.setContentType("text/xml");
RequestDispatcher dispatch = getServletContext().getRequestDispatcher("/test/STWDesign/View.jsp");
where in the view.jsp i am displaying xml data.
thanks for you help
waiting for reply.

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>
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http://download.oracle.com/docs/cd/E17904_01/apirefs.1111/e13941/weblogic/servlet/security/ServletAuthentication.html
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Please help!
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GrayMan - Thanks for your help.
Let me explain my problem in more detail ...
Background:
I have some servlet experience, but I am new to jsp - so sorry if this seems trivial to you ...
I have a book called bitter java by bruce tate from manning.com . I am trying to get the chapter 3 examples to work
There are three files
PostListCommand          the bean
PostListController     the servlet
PostListResults          jsp
And a new test file � PostListResults version 2 with scriptlet code to access the bean.
There are a couple of typos in the downloaded source files, but nothing that causes the main problem of not being able to access the bean data.
Program flow
Servlet instantiates new bean
Bean � gets data from db
Servlet passes bean to jsp with a forward
Jsp outputs data
I have put the files in the directories �
E:\Tomcat41\webapps\examples\WEB-INF\jsp          for jsp�s
E:\Tomcat41\webapps\examples\WEB-INF\classes\bbs     for bean and servlets
The complete source code for each file is given below.
1 I have checked the db access � that�s ok
2 I have also checked reading the bean data back in from the request scope and printing out the results from within the servlet.- ok
3 I can access the data through a scriptlet (PostListResults version 2), but not with the original PostListResults which uses <jsp:useBean>
thanks in advance, chris
PostListController.java
package bbs;
// Imports
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
// Import for commands used by this class
import bbs.PostListCommand;
public class PostListController
extends javax.servlet.http.HttpServlet
implements Serializable {
* DoGet
* Pass get requests through to PerformTask
public void doGet(
HttpServletRequest request,
HttpServletResponse response)
throws javax.servlet.ServletException, java.io.IOException {
performTask(request, response);
public void performTask(
HttpServletRequest request,
HttpServletResponse response) {
try {
PostListCommand postList = (bbs.PostListCommand) java.beans.Beans.instantiate(getClass().getClassLoader(),"bbs.PostListCommand");
postList.initialize();
postList.execute();
request.setAttribute("PostListCommand", postList);
ServletContext sc = this.getServletContext();
RequestDispatcher rd =
sc.getRequestDispatcher("/jsp/PostListResults.jsp");
rd.forward(request, response);
} catch (Throwable theException) {
theException.printStackTrace();
PostListCommand.java
package bbs;
import java.io.*;
import java.sql.*;
//import COM.ibm.db2.jdbc.*;
import java.util.*;
* Insert the type's description here.
* Creation date: (07/17/2001 5:07:55 PM)
* @author: Administrator
public class PostListCommand {
// Field indexes for command properties
private static final int SUBJECT_COLUMN = 1;
private static final int AUTHOR_COLUMN = 2;
private static final int BOARD_COLUMN = 3;
protected Vector author = new Vector();
protected Vector subject = new Vector();
protected Vector board = new Vector();
// SQL result set
protected ResultSet result;
protected Connection connection = null;
* execute
* This is the work horse method for the command.
* It will execute the query and get the result set.
public void execute()
throws
java.lang.Exception,
java.io.IOException {
try {
// retrieve data from the database
Statement statement = connection.createStatement();
result =
statement.executeQuery("SELECT subject, author, board from posts");
while (result.next()) {
subject.addElement(result.getString(SUBJECT_COLUMN));
author.addElement(result.getString(AUTHOR_COLUMN));
board.addElement(result.getString(BOARD_COLUMN));
result.close();
statement.close();
} catch (Throwable theException) {
theException.printStackTrace();
* getAuthor
* This method will get the author property.
* Since the SQL statement returns a result set,
* we will index the result.
public String getAuthor(int index)
throws
java.lang.IndexOutOfBoundsException,
java.lang.ArrayIndexOutOfBoundsException {
return (String) author.elementAt(index);
* getBoard
* This method will get the board property.
* Since the SQL statement returns a result set,
* we will index the result.
public String getBoard(int index)
throws
java.lang.IndexOutOfBoundsException,
java.lang.ArrayIndexOutOfBoundsException {
return (String) board.elementAt(index);
* getSubject
* This method will get the subject property.
* Since the SQL statement returns a result set,
* we will index the result.
public String getSubject(int index)
throws
java.lang.IndexOutOfBoundsException,
java.lang.ArrayIndexOutOfBoundsException {
return (String) subject.elementAt(index);
* initialize
* This method will connect to the database.
public void initialize()
throws java.io.IOException {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
// URL is jdbc:db2:dbname
String url = "jdbc:db2:board";
// URL is jdbc:odbc:bitter3board
String url = "jdbc:odbc:bitter3board";
// connect with default id/password
connection = DriverManager.getConnection(url);
} catch (Throwable theException) {
theException.printStackTrace();
* Insert the method's description here.
* Creation date: (07/17/2001 11:38:44 PM)
* @return int
* @exception java.lang.IndexOutOfBoundsException The exception description.
public int getSize() {
return author.size();
PostListResults.jsp
<HTML>
<HEAD>
<TITLE>Message Board Posts</TITLE>
</HEAD>
<BODY BGCOLOR=#C0C0C0>
<H1>All Messages</H1>
<P>
<jsp:useBean id="postList" class="bbs.PostListCommand" scope="request"></jsp:useBean>
<TABLE border="1">
<TR>
<TD>Subject</TD>
<TD>Author</TD>
<TD>Board</TD>
</TR>
<% for (int i=0; i < postList.getSize(); _i++) { %>
<TR> <TD><%=postList.getSubject(_i) %></TD>
<TD><%=postList.getAuthor(_i) %></TD>
<TD><%=postList.getBoard(_i) %></TD>
</TR>
<% } %>
</TABLE>
<P>
</BODY>
</HTML>
PostListResults.jsp version 2 � with scriplet code instead of useBean
<HTML>
<%@ page import="bbs.PostListCommand" %>

<HEAD>
<TITLE>Message Board Posts</TITLE>
</HEAD>
<BODY BGCOLOR=#C0C0C0>
<% bbs.PostListCommand postList = null;
synchronized(request){
     postList = (bbs.PostListCommand) request.getAttribute("PostListCommand");
     if (postList == null){ %>
          <H1>Nothing in request scope to retrieve ....</H1>
          <P>
<%     }
     else{ %>
          <TABLE border="1">
          <TR>
          <TD>Subject</TD>
          <TD>Author</TD>
          <TD>Board</TD>
          </TR>
     <% for (int i=0; i < postList.getSize(); _i++) { %>
               <TR> <TD><%=postList.getSubject(_i) %></TD>
          <TD><%=postList.getAuthor(_i) %></TD>
          <TD><%=postList.getBoard(_i) %></TD>
          </TR>
     <% } %>
          </TABLE>
<%     }
}%>
<P>
goodnight
</BODY>
</HTML>

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Hi,
I have a problem with that code :
getRequestDispatcher(myJSP).forward(req,resp)
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Hi all
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You might try
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          Shiv Kumar wrote:
          > Hi all
          >
          > I have a set of Servlets and JSPs running on NewAtlanta's ServletExec
          > servlet engine. I am currently porting them to WebLogic. I am facing a
          > few problems. I do not want to change any of my HTML/JSP/Java files
          > immediately. I want the same files to work in WL as it is. Pl help.
          >
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          > JSP files. Our servlets will get the http requests, get data from
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          > How do I make this code work with WebLogic? Is there any way to
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          > Thanks for any help.
          > --
          > shiv
          > [email protected]
          Russell Castagnaro
          Chief Mentor
          SyncTank Solutions
          http://www.synctank.com
          Earth is the cradle of mankind; one does not remain in the cradle forever
          -Tsiolkovsky

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%

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     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletContainerContext._service(DesignTimeServletContainerContext.java:611)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletContainerContext.service(DesignTimeServletContainerContext.java:570)
     at oracle.jdevimpl.webapp.design.DesignTimeRenderThread.runImpl(DesignTimeRenderThread.java:264)
     at oracle.jdevimpl.webapp.design.DesignTimeThread.run(DesignTimeThread.java:146)
Error exercising tag : afh:body
java.lang.NullPointerException
     at oracle.adfinternal.view.faces.renderkit.core.xhtml.BodyRenderer._writeVersionInformation(BodyRenderer.java:416)
     at oracle.adfinternal.view.faces.renderkit.core.xhtml.BodyRenderer.encodeAll(BodyRenderer.java:65)
     at oracle.adfinternal.view.faces.renderkit.core.CoreRenderer.encodeEnd(CoreRenderer.java:159)
     at oracle.adf.view.faces.component.UIXComponentBase.encodeEnd(UIXComponentBase.java:624)
     at javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:623)
     at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:546)
     at oracle.adf.view.faces.webapp.UIXComponentTag.doEndTag(UIXComponentTag.java:100)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.doEndTag(DesignTimeJspActionRenderer.java:1345)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer._executeTag(DesignTimeJspActionRenderer.java:1692)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.render(DesignTimeJspActionRenderer.java:241)
     at oracle.jdevimpl.webapp.design.renderer.FacesActionRenderer.render(FacesActionRenderer.java:127)
     at oracle.jdevimpl.webapp.design.DesignTimeRenderer.renderChildren(DesignTimeRenderer.java:424)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.renderChildren(DesignTimeJspActionRenderer.java:772)
     at oracle.jdevimpl.webapp.design.renderer.FacesActionRenderer.renderChildren(FacesActionRenderer.java:367)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer._executeTag(DesignTimeJspActionRenderer.java:1665)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.render(DesignTimeJspActionRenderer.java:241)
     at oracle.jdevimpl.webapp.design.renderer.FacesActionRenderer.render(FacesActionRenderer.java:127)
     at oracle.jdevimpl.webapp.design.DesignTimeRenderer.renderChildren(DesignTimeRenderer.java:424)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.renderChildren(DesignTimeJspActionRenderer.java:772)
     at oracle.jdevimpl.webapp.design.renderer.FacesActionRenderer.renderChildren(FacesActionRenderer.java:367)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer._executeTag(DesignTimeJspActionRenderer.java:1665)
     at oracle.jdevimpl.webapp.design.renderer.DesignTimeJspActionRenderer.render(DesignTimeJspActionRenderer.java:241)
     at oracle.jdevimpl.webapp.design.renderer.FacesActionRenderer.render(FacesActionRenderer.java:127)
     at oracle.jdevimpl.webapp.design.DesignTimeRenderer.renderChildren(DesignTimeRenderer.java:424)
     at oracle.jdevimpl.webapp.jsp.renderers.JSPCoreSyntaxRenderer.render(JSPCoreSyntaxRenderer.java:66)
     at oracle.jdevimpl.webapp.design.support.jsp.DesignTimeJspServlet._renderSource(DesignTimeJspServlet.java:197)
     at oracle.jdevimpl.webapp.design.support.jsp.DesignTimeJspServlet.serviceJsp(DesignTimeJspServlet.java:109)
     at oracle.jdevimpl.webapp.design.support.jsp.DesignTimeJspServlet.service(DesignTimeJspServlet.java:73)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletInfo.service(DesignTimeServletInfo.java:268)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeRequestDispatcher.dispatch(DesignTimeRequestDispatcher.java:197)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeRequestDispatcher.forward(DesignTimeRequestDispatcher.java:72)
     at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:130)
     at oracle.adfinternal.view.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:157)
     at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletInfo.service(DesignTimeServletInfo.java:268)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeRequestDispatcher$DesignTimeFilterChain.doFilter(DesignTimeRequestDispatcher.java:307)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeRequestDispatcher.dispatch(DesignTimeRequestDispatcher.java:193)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletContainerContext._service(DesignTimeServletContainerContext.java:611)
     at oracle.jdevimpl.webapp.design.support.http.DesignTimeServletContainerContext.service(DesignTimeServletContainerContext.java:570)
     at oracle.jdevimpl.webapp.design.DesignTimeRenderThread.runImpl(DesignTimeRenderThread.java:264)
     at oracle.jdevimpl.webapp.design.DesignTimeThread.run(DesignTimeThread.java:146)

Hi all,
Although I have removed filter mapping, the same problem described above continues except the exception messages are not exist now!
Visual editor does not show any adf core components such as input text, tables rows etc.
I'm using jdeveloper 10.1.3.0.4 newly so what is the problem?
In source, I have used subview and tiles components. there may be problems because of usages of these components?
At the beginning there was no problem, I could view the all components on visual designer...
any idea... !?
best regards
--baris

Servlet to servlet forwarding

Hello.
I am writing a small controlling servlet to check certain request parameters before forwarding the request to the appropriate page.
The controlling servlet is mapped to "/*" under the application so that all requests will hit it first.
This is how I forward the request.
Code to check paramaters and decde url
RequestDispatcher rd = getServletConfig().getServletContext().getRequestDispatcher("/location/file.jspx");
rd.forward(request,response);
My problem is that this seems to send the browser into an infinite waiting loop when I type "http://localhost/application/".
Is this the right way to do it? Any other techniques or suggestions.
Thanks
Sawan

when you type http://localhost/application nothing happens
now
when you type http://localhost/application/anything
you get to the controlling servlet
The error you are getting in caused by the controller servlet
does the resource http://localhost/application/location/file.jspx exist
and whats with the x.

Servlet forward proxy

Hi all.
I'm trying to build a servlet which will act as a proxy between another system written in C++ and my J2EE applications. A browser client will go through the C++ app. down to my proxy.
Basically I want my proxy servlet to receive a HTTP POST, strip out some header data and re-POST the data to another servlet. The response will the travel the same way back through the proxy up to the C++ app.
The problem is that my proxy servlet and my J2EE applications won't be running on the same machine. Therefore I can't use the nice RequestDispatcher to forward to my other servlets or include them.
So, what to do?
I guess it's possible to collect data from my HttpServletRequest object in the proxy servlet and create a new POST and then write it on an outputStream to my other servlet. But is this the only way?
It's really important that my application receives a POST that looks the same as the one reaching the proxy.
I hope someone can give me a hint.
regards
Fredrik

Have your proxy servlet open a HttpURLConnection to the second servlet and use this connection to do the post.
Should work but I have never done it from a servlet.

ServletInputStream in Servlet Forwarding empty

Please help me, i think i have a problem.
After reading and checking "request"
seem that the xml message soap included in "request" disappear.
I have to forwarding it to another servlet.
Is too late? I have lost it?
Where is it ?
I use the RequestDispatcher.forward() method for forwarding
but (i'm sure) the second servlet receives the "request.getInputStream()" empty.
Who can help me?
Thanks in advance
my code :
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ServletInputStream in = request.getInputStream();
byte[] fre=null;
String xml="";
while (in.available()>0) {
try {
fre = new byte[in.available()];
in.read(fre);
xml = xml + new String(fre);
} catch (Exception exc) {
exc.printStackTrace();
if (ckeck(xml)) {
request.getRequestDispatcher("myservlet2").forward(request,response);
}

You have already read the input stream. Once read, and it gets read, it can not be re-read. If you want the information in both places, read it in the first servlet and store it in a scope that the other servlet can read (like as a request attribute:
byte[] fre=null;
String xml="";
while (in.available()>0) {
    try {
      fre = new byte[in.available()];
      in.read(fre);
      xml = xml + new String(fre);
    } catch (Exception exc) {
      exc.printStackTrace();
request.setAttribute("xml", xml);
if (ckeck(xml)) {
    request.getRequestDispatcher("myservlet2").forward(request,response);
//... then in myservlet2
String xml = (String)request.getAttribute("xml");

Servlet forward problem

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