Redirecting a servlet????

I am trying to redirct to a servlet but it doesn't seem to want to comply with my wishes. I am using a sendRedirect() method. It works with an ordinary URL but it won't all me to redirect to a Servlet. Any help or advice would be greatly appreciated.
cheers,
J.

the sendRedirect() method would call the doGet() method of the servlet that u are calling. If you have this method in the servlet that u are calling, it wud be of help if u cud tell us what the error is??
Ps:- how bout those duke dollars that r waiting for me if this answer helps?

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Providing redirects in Servlet filter

Hi,
I need to provide serverside redirects in Servlet filter.O tried the below code, But unable to do it.
Is it possible to do such a thing.
public void doFilter(ServletRequest req, ServletResponse res,
               FilterChain chain) throws IOException, ServletException {
          logger.info("Start of RedirectFilter ");
          HttpServletRequest request = (HttpServletRequest) req;
          HttpServletResponse response = (HttpServletResponse) res;
          String requestURI=request.getRequestURI();
          String domainURL=request.getServerName().toLowerCase();
          logger.info("domainName--"+domainName);
          String keywordToBeAppended=domainURL.replaceAll(domainName,"");
          logger.info("url--"+request.getRequestURI());
          logger.info("servername--"+request.getServerName());
          logger.info("keywordToBeAppended-"+keywordToBeAppended);
          String finalURL= request.getScheme()+"://"+domainURL+"/"+keywordToBeAppended+requestURI;
          logger.info("finalURL--"+finalURL);
          RequestDispatcher rd = request.getRequestDispatcher(finalURL);
          rd.forward(request, response);
          logger.info("End of RedirectFilter ");
          chain.doFilter(request, response);
     }

There is technically a huge difference between "redirect" and "forward". You're doing here forwards. And because you continue the filter chain, you run into problems. You should do either a forward OR continuing the current request unchanged (through the filter chain) OR send a redirect. You cannot do one or more simultaneously.

Redirecting the servlet output to jsp

Hi i need to redirect my servlet out put to jsp
in result set's every row i have 9 columns
this result set how can i redirct to jsp
plz can any one let me know with an example
thanks a lot in advance

inamdar wrote:
Hi i have never used DTO's and DAO classes
plz colud u let me know without using that..Huh? It is never too late to start with it. Just create two simple classes. A DTO class is basically a simple javabean with private (encapsulated) properties and a public getter and setter for each property. A DAO class is basically a class which contains purely JDBC code.
Sample DTO:public class MyData {
    private Long id;
    private String name;
    private Integer value;
    public Long getId() { return id; }
    public String getName() { return name; }
    public Integer getValue() { return value; }
    public void setId(Long id) { this.id = id; }
    public void setName(String name) { this.name = name; }
    public void setValue(Integer value) { this.value = value; }
}Sample DAO:public class MyDataDAO {
    public List<MyData> listAll() {
        String listAllQuery = "SELECT id, name, value FROM data";
        List<MyData> myDataList = new ArrayList<MyData>();
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;
        try {
            connection = getConnectionSomehow(); // DriverManager or Connection Pool, your choice.
            statement = connection.createStatement();
            resultSet = statement.executeQuery(listAllQuery);
            while(resultSet.next()) {
                MyData myData = new MyData();
                myData.setId(new Long(resultSet.getLong("id")));
                myData.setName(resultSet.getString("name"));
                myData.setValue(new Integer(resultSet.getInt("value")));
                myDataList.add(myData);
        } catch (SQLException e) {
            // Handle it. Print it, throw it, log it, mail it, your choice.
            e.printStackTrace();
        } finally {
            // You can write an utility class/method for those lines as well.
            if (resultSet != null) { try { resultSet.close(); } catch (SQLException e) { e.printStackTrace(); } }
            if (statement != null) { try { statement.close(); } catch (SQLException e) { e.printStackTrace(); } }
            if (connection != null) { try { connection.close(); } catch (SQLException e) { e.printStackTrace(); } }
        return myDataList;
}Sample Servlet code:List<MyData> myDataList = new MyDataDAO().listAll();
request.setAttribute("myDataList", myDataList);
request.getRequestDispatcher("someJspFile.jsp").forward(request, response);Sample JSTL code in someJspFile.jsp:<table>
    <c:forEach items="${myDataList}" var="myData">
        <tr>
            <td>${myData.id}</td>
            <td>${myData.name}</td>
            <td>${myData.value}</td>
        </tr>
    </c:forEach>
</table>Simple and clean, isn't it?

How to do redirect in servlet???

hi...
i want to know .....i have a servlet where its jobs is to get an input and send it to an application and that application gives the output.however after the application gives the output.....the servlet will generated a blank html pages. i want it to redirect to other pages like thank you page etc. how to do this???

u can use...
response.sendRedirect("url") if u want a client-side redirect..
or use requestDispatche which accepts request and response objects as arguments if u want a server side redirect..

Conditionally send redirect in Servlet filter after j_security_check

I am writing a form based challenge for a secured J2EE application. What I want the user to do is log in, and after they are authenticated by j_security_check, get the Role that they have, and based on the role, redirect with the filter to different jsp pages.
Here is my code
public void doFilter(
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          FilterChain chain)
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          //action to perform before logging on
          chain.doFilter(req, resp);
          System.out.println("Filter was called");
          HttpServletResponse response = (HttpServletResponse) resp;
          //do the work to get the users Role... request.isUserInRole("Some Role");
                                           //if yes
                                           response.sendRedirect("somejsp.jsp");
                                           //else
                                           //response.sendRedirect("someother.jsp")
                                          return;
     }When I try to run the above code, My send redirect has no effect, and I get the following in my System.out
[5/17/04 10:31:20:975 CDT] 7b2bdbb7 TraceNLS u No message text associated with key HttpConnection.run:.java.lang.IllegalStateException:.0.response.bytes.written,.but.Content-Length.header.equals.9262 in bundle com.ibm.ejs.resources.seriousMessages
[5/17/04 10:31:20:975 CDT] 7b2bdbb7 HttpConnectio E HttpConnection.run: java.lang.IllegalStateException: 0 response bytes written, but Content-Length header equals 9262
[5/17/04 10:31:21:006 CDT] 7b2bdbb7 SystemOut O java.lang.IllegalStateException: 0 response bytes written, but Content-Length header equals 9262
[5/17/04 10:31:21:006 CDT] 7b2bdbb7 SystemOut O      at com.ibm.ws.http.HttpResponse.finish(HttpResponse.java:89)
[5/17/04 10:31:21:006 CDT] 7b2bdbb7 SystemOut O      at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:565)
[5/17/04 10:31:21:006 CDT] 7b2bdbb7 SystemOut O      at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:366)
[5/17/04 10:31:21:006 CDT] 7b2bdbb7 SystemOut O      at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)
[5/17/04 10:31:29:350 CDT] 66a7dbb7 SystemOut O Filter was called
[5/17/04 10:31:29:350 CDT] 66a7dbb7 SystemOut O Cast was completed
[5/17/04 10:31:35:429 CDT] 66a7dbb7 WebGroup E SRVE0026E: [Servlet Error]-[Filter [LoginFilter]: filter is unavailable.]: java.lang.IllegalStateException
     at com.ibm.ws.webcontainer.srt.SRTServletResponseContext.sendRedirect(SRTServletResponseContext.java:101)
     at com.ibm.ws.webcontainer.srt.SRTServletResponse.sendRedirect(SRTServletResponse.java:679)
     at com.mutualofomaha.groupwebenrollment.LoginFilter.doFilter(LoginFilter.java:41)
     at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:132)
     at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:71)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:914)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:528)
     at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:176)
     at com.ibm.ws.webcontainer.srt.WebAppInvoker.doForward(WebAppInvoker.java:79)
     at com.ibm.ws.webcontainer.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:201)
     at com.ibm.ws.webcontainer.cache.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:71)
     at com.ibm.ws.webcontainer.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:182)
     at com.ibm.ws.webcontainer.oselistener.OSEListenerDispatcher.service(OSEListener.java:334)
     at com.ibm.ws.webcontainer.http.HttpConnection.handleRequest(HttpConnection.java:56)
     at com.ibm.ws.http.HttpConnection.readAndHandleRequest(HttpConnection.java:516)
     at com.ibm.ws.http.HttpConnection.run(HttpConnection.java:362)
     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:593)

Something in the filter chain has committed the response.
As you're redirecting you almost certainly don't need to call filterChain.doFilter anyway; you just want to send the user somewhere else.

Redirecting URL Servlet not working

Hi all,
All my JSPs are located in pages folder of my Application's Web Context. I need to redirect JSP URLs to the pages folder. For example if user requests http://localhost:8080/RedirectJSPApp/test.jsp then I need to redirect to http://localhost:8080/RedirectJSPApp/pages/test.jsp. But if user request http://localhost:8080/RedirectJSPApp/pages/test.jsp then i dont need to do any redirection.
So I define a Servlet:
package com.srh.servlet;
public class RedirectServlet
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         throws ServletException, IOException
      doPost(request, response);
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         throws ServletException, IOException
      String contextPath = request.getContextPath();
      String requestUrl = request.getRequestURL().toString();
      String targetRequestUrl = null;
      String jspRequested = null;
      int index = -1;
      index = requestUrl.indexOf("/pages/");
      // The JSP is not called properly;
      if (index == -1)
         // Call the JSP properly
         index = requestUrl.indexOf(contextPath);
         if (index != -1)
            targetRequestUrl = requestUrl.substring(0, index+contextPath.length());
            jspRequested = requestUrl.substring(index+contextPath.length()+1);
            targetRequestUrl += "/pages/" + jspRequested;
            response.sendRedirect(targetRequestUrl);
}In the web.xml I wrote:
   <servlet>
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      <servlet-name>RedirectServlet</servlet-name>
      <servlet-class>com.srh.servlet.RedirectServlet</servlet-class>
   </servlet>
   <servlet-mapping>
      <servlet-name>RedirectServlet</servlet-name>
      <url-pattern>*.jsp</url-pattern>
   </servlet-mapping>I have a test.jsp in pages folder:
<html>
   <head>
      <title>Test</title>
   </head>
   <body>
      Inside test.jsp
   </body>
</html>I deployed on JBoss 4.2.0. I type http://localhost:8080/RedirectJSPApp/test.jsp in my browser and it changes to http://localhost:8080/RedirectJSPApp/pages/test.jsp which is perfect but it never prints "Inside test.jsp" on the page. Why this is happening?
If I remove RedirectServlet entries from web.xml and just type in http://localhost:8080/RedirectJSPApp/pages/test.jsp then it prints "Inside test.jsp" on the page. What I am missing here?
TIA
TV

I tried forward of RequestDispatcher but still same problem:
package com.srh.servlet;
public class RedirectServlet
      extends javax.servlet.http.HttpServlet
   public void doGet(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException
      doPost(request, response);
   public void doPost(HttpServletRequest request, HttpServletResponse response)
         throws ServletException, IOException
      String contextPath = request.getContextPath();
      String requestUrl = request.getRequestURL().toString();
      String targetRequestUrl = null;
      String jspRequested = null;
      int index = -1;
      index = requestUrl.indexOf("/pages/");
      // The JSP is not called properly;
      if (index == -1)
         // Call the JSP properly
         index = requestUrl.indexOf(contextPath);
         if (index != -1)
//          targetRequestUrl = requestUrl.substring(0, index+contextPath.length());
//          jspRequested = requestUrl.substring(index+contextPath.length()+1);
//          targetRequestUrl += "/pages/" + jspRequested;
//          response.sendRedirect(targetRequestUrl);
            jspRequested = requestUrl.substring(index+contextPath.length()+1);
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Multiple Redirects through Servlet

I am very new to jsp and java servlets. I am trying to put a processing page that appears while some work is done and then the servlet redirects to a output page that displays reports. I am not sure how to do this.
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Use Javascript to display a hidden <div> element with some animated gif when the submit button is pressed.
If you really want an intermediate page, then you need to fire a new thread to do the progress and use the meta refresh header or ajaxical techniques to check the current progress.

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Is there a way to redirect the response objects output buffer to a file instead of to the client (browser)?
I am using the jsp to process a set of jsp templates (using the RequestDispatcher's include method) and I would like to send the resulting html to a file, NOT to the client.
Any ideas.
Thanks,
Jay
[email protected]

The problem is that I'm not generating code with out.println() statements, I'm relying on the servlet engine to generate the html from jsp templates.
For example, my code uses the RequestDispatcher.include(request, response) to access and process a jsp template, which in turn may include another jsp template, and so forth and so on, and it is my understanding that there is an output buffer that is being written and will finally be sent to the client. I want to intercept this and send that to a file.
Thoughts?

Problem while redirecting from servlet to wml page

Hello everybody
I am developing a WAP site but I am a begnner in wml and servlet. So I need some help from you ppl.
I have made a wml page whch redirects to a Login servlet now from that LoginServlet I want to gain redirect to a wml page. I have written the following code so that when the user clicks on Login he is redirected to emailreaderwap/Login.wml page
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String url="/emailreaderswap/login.wml";
response.addHeader("Content-Location:", Double.toStringMath.random()));
response.setContentType("text/vnd.wap.wml");
out.println("<?xml version=\"1.0\" encoding=\"utf-8\"?> ");
out.println("<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.3//EN\" ");
out.println("\"http://www.wapforum.org/DTD/wml13.dtd\"> ");
out.println("<wml>");
out.println("<card>");
out.println("<p>"+ "Email Address or Password are wrong Please Try Again!\r\nClick On The Link Below to go back to Login Page"+
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I hope you ppl reply as soon as possible as I have a deadlne to meet.
Eagerly waiting for your reply.
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hi ,
u forgot to give the slash ("/") before jsp file when u r creating the RequestDispatcher object. I tried the following example. Its working fine.
check this code:
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.GenericServlet;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
* @author sivakumar
public class TestServlet extends GenericServlet {
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try it...
good luck...

Is this the best way to redirect using servlet?

I making a servlet application where the user sends some FORM value to a servlet. I want the servlet to redirect to the answer page after processing the page. Do you think the following code is the correct way of doing?
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
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Many thanks for replying.
My output file have lots of html code and I dont want to make my servlet heavy with unnecessary code. So I have decided to use another page result.jsp as output file. In result.jsp I intend to call these objects which is storing the value here to display the result.
As I am new to jsp. I am still in the processing of thinking the best way to handle errors. I have created a method which takes in int values and returns corresponding String values. Like this
public class DnaToRna extends HttpServlet {
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private String printError(int i) {
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            error = "There is an error in String to char array";
        }else if (i==2){
            error = "There is an error in your DNA sequence";
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Although I am new to web programing. I think this would be nice.
Here is the other method
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I think, the first method redirect s with response ,
but how to call two different servlet ?
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if you call the first redirect, the servlet is getting aborted, so you can redirect to the first servlet, working the stuff in it, and then in the second servlet you can redirect to the third servlet

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Although this isn't very elegant, it works fine:
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Thanks, but I can solve this problem.

This is my web.xml file where the mapping is specified, this is the thing that I can't understand.
<web-app>
<description>Empty web.xml file for Web Application</description>
<display-name>public_html</display-name>
<servlet>
<servlet-name>Servlet1</servlet-name>
<servlet-class>servlet.Servlet1</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Servlet1</servlet-name>
<url-pattern>/servlet1</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>35</session-timeout>
</session-config>
<mime-mapping>
<extension>html</extension>
<mime-type>text/html</mime-type>
</mime-mapping>
<mime-mapping>
<extension>txt</extension>
<mime-type>text/plain</mime-type>
</mime-mapping>
</web-app>
Thanks

How to sync two different Nano's through the same iTunes?

how do I upload two persons different runs through the same iTunes?
My wife and I have two different Nanos and seperate sensors but we use the same iTunes which is in my name. Now I have made a new Nike account for my wife but how can I sync her run? At the moment it automaticaly syncs with my account?
regards
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if you call the first redirect, the servlet is getting aborted, so you can redirect to the first servlet, working the stuff in it, and then in the second servlet you can redirect to the third servlet

XSLT page refresh issue on updating xml

hi,
my application involves rendering of xml through XSLT on ah HTML page.
i am using XMLTransformer in servlet i.e.
transformer.transform( new StreamSource(tempXmlFile),
new StreamResult(outputHtmlFile));
response.sendRedirect(request.getContextPath() + "/logDetailXsl.html");
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problem is that html page is not updated. i have used javascript for refresh but it doesnot work either.
i m new using xslt so can not identify if the problem is with xslt or html page!
pointers appreciated!

hi,
my application involves rendering of xml through XSLT on ah HTML page.
i am using XMLTransformer in servlet i.e.
transformer.transform( new StreamSource(tempXmlFile),
new StreamResult(outputHtmlFile));
response.sendRedirect(request.getContextPath() + "/logDetailXsl.html");
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problem is that html page is not updated. i have used javascript for refresh but it doesnot work either.
i m new using xslt so can not identify if the problem is with xslt or html page!
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Redirecting a servlet????

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