requestDispatcher « API « JSP-Servlet Q&A

1. obtaining a requestDispatcher

What is the benefit of using the servletContext as opposed the request in order to obtain a requestDispatcher?

and using

2. Using SiteMesh with RequestDispatcher's forward()

I'm attempting to integrate SiteMesh into a legacy application using Tomcat 5 as my a container. I have a main.jsp that I'm decorating with a simple decorator. In decorators.xml, I've ...

3. RequestDispatcher.forward loop

I am using

to map all the requests to one sevlet,where i do all the authentication work. but I want to skip some static content (like css files).so I tried fowrding them ...

4. Can I specify a different target tab/window in JSP with a RequestDispatcher

I have a JSP program that displays a form where the user enters some criteria for a report. If the criteria fail validations -- missing fields, invalid dates, etc -- I ...

5. RequestDispatcher in Java

What exactly the main purpose of using RequestDispatcher, for example when it's executed in Filter like the following example:

public void doFilter(ServletRequest request, ServletResponse response,
    FilterChain chain) throws ServletException, ...

6. RequestDispatcher to a JSP in the same package

If I have a servlet I am able to forward to a jsp in the WebContent folder with no issues:

request.getRequestDispatcher("page.jsp").forward(request, response);
request being an HttpServletRequest and response being an HttpServletResponse. Now for the ...

7. Confusion with RequestDispatcher saying the browser address bar does not change

All the online references and head first JSP&Servlet book I'm reading state the characteristic of RequestDispatcher and Redirect (i.e. resoponse.sendRedirect() ) like: "Request Dispatcher" - URL in the browser bar does not ...

8. RequestDispatcher for remote server?

I am trying to create a HttpServlet that forwards all incoming requests as is, to another serlvet running on a different domain. How can this be accomplished? The RequestDispatcher's forward() only operates ...

9. Servlet RequestDispatcher#include and pathInfo

I want to include the output of another servlet into the current response. I can call

request.getRequestDispatcher("/new/url").include(request, response);
and it does go to the right servlet, but request.getPathInfo(), request.getServletPath() and friends do not get ...

10. JSP:Include not being called on forwarding page using doPost requestDispatcher

I am currently writing an web application where you need to log in, using username and password. The next step in the process is to select a Project in which the ...

11. Reusing RequestDispatcher object

Inside doGet()/doPost() in a servlet I have:

RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("/WEB-INF/pages/view.jsp");
dispatcher.forward(request, response);
As the path to the jsp is not relative to current request and the RequestDispatcher is obtained from servlet context, can ...

12. what i have to use apart from RequestDispatcher?

i am adding some data from my jsp page(Add.jsp). after adding that data when i click on submit button i have to show the view page of the corresponding table. Here if ...

13. RequestDispatcher

request.getRequestDispatcher("").forward(request, response);
I want to forward the request to the foreign URL like, not residing on the container where the servlet resides. It's not getting forwarded. Are there any solutions on the ...

14. Detect exceptions in JSP page via RequestDispatcher

I have a JSP page with an error page specified. I call the page from a servlet via:

RequestDispatcher rd = ctx.getRequestDispatcher( jspPage );
rd.include( req, res );
How can I detect if ...

15. getOutputStream() has already been called for this response

getOutputStream() has already been called for this response
this error comes in line where I have forwarded the response to some other page..

16. Problem with sending value of variable with RequestDispatcher

In variable search_for I've got the string value of the value I'm searching for. But I cannot pass it via RequestDispatcher to jsp. What am I doing wrong?

RequestDispatcher rd = request.getRequestDispatcher("my.jsp?search_for"); ...

17. not able to forward values calculated in a servlet to a jsp page using RequestDispatcher.How to do the same?

In my code..i have retrieved the value of input(text type) from a jsp page in a servlet using request.getParameter(). Now using these values,i have performed some calculation. now i want to forward the ...

18. RequestDispatcher.include(...) appends servlet's package name

I have an index.jsp page which uploads an image. On submit it goes to a servlet In the servlet I am checking if the extension in of image("jpg","png",etc) and forwards ...

19. I am unable to call a JSP using RequestDispatcher forward

I have this servlet calling this JSP

<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>


But dont know why this is giving me this error
Sep 10, 2011 4:15:23 PM org.apache.catalina.core.StandardWrapperValve ...

20. redirect jsp from servlet RequestDispatcher

I want to redirect JSP page from one servlet. All JSP pages are under Web Content. not under Web-INF. I have a problem of calling that JSP pages. I got 404 errors. ...

21. RequestDispatcher ending in infinite loop

I have two WAR applications and the mode of communication between them is via servlets. My application (WAR A) opens a child window with the URL of a servlet in another WAR ...

22. JSP: Why do we need RequestDispatcher?

I'm still puzzled on the usage of a RequestDispatcher. If i have a javascript file which internally using a url to call a servlet as shown below:

var url = "../../../../FeesServlet?selectedCode="+selectedCode+"&searchNameOrCode="+searchNameOrCode"GET", url, true);
req.onreadystatechange ...

23. jsp:forward and RequestDispatcher.forward

No, it should NOT run any statements after you have forwarded to a resource. Though the jsp:forward and RequestDispatcher.forward() may seem to be different in your perspective, to the container it ...

25. requestDispatcher.forward() throws error when forwarded to #topic

Hi friends, From a dispatcher servlet, I am forwarding the control to a .jsp page. It is working fine if just the jsp page is given. However, the forward fails when #topic is attached to the url. if (topic != null) forwardPage = forwardPage.trim() + "#" + topic.trim(); RequestDispatcher rd = request.getRequestDispatcher(forwardPage); rd.forward(request, response); I am getting this error : HTTP ...

27. RequestDispatcher not working.....

Tomcat said: HTTP Status 404 - /testbed/jspTest/WebGate/doors/door1.jsp type Status report message /testbed/jspTest/WebGate/doors/door1.jsp description The requested resource (/testbed/jspTest/WebGate/doors/door1.jsp) is not available. [/QUOTE> But /testbed/jspTest/WebGate/doors/door1.jsp actually exists... My Development Environment: APP ROOT: WebGate Doors: /testbed/WebGate/doors/ Available files under /testbed/WebGate/doors/ -rw-r--r-- 1 root root 85 Mar 12 15:26 door1.jsp -rw-r--r-- 1 root root 85 Mar 12 15:26 door2.jsp -rw-r--r-- 1 root root 85 ...

28. RequestDispatcher and .forward()

The code you posted is fine. As you have surmised, the problem is where in the JSP that code is called from. Any decisions regarding forwarding or redirection should take place at the top of the JSP before any template text or code that causes output to be generated . Actually, ideally, all this would have been taken care of in ...

29. What actually happens when RequestDispatcher.forward() is called

You think you know JSP and then something like this happens! Let's say you have a jsp page, which, when it is compiled, checks the session, and if not finding everything it expects there, gets a RequestDispatcher and uses it to forward somewhere else. However, there is java code following the call to forward() in the compiled version of the JSP. ...

30. RequestDispatcher & forward method

No, it means it's exactly the same. will be translated into requestDispatcher.forward in the generated servlet code. If I were going to forward from a JSP (which I never do) I would use because it's cleaner looking than putting a scriptlet in my JSP code. Performance-wise, there is absolutely no difference.

31. RequestDispatcher

32. Cookies with requestDispatcher

Hi all, Is there any way i can send the hearder/cookies information ,when we do forward of request? if i do sendredirect I can get all the cookies values, which ever i am setting but if i use forward they are lost. I need to use forward BCOZ i have lots of hidden variables,which need to be passed. Thanks, Reddy

33. RequestDispatcher include..

34. SendRidirect vs RequestDispatcher

37. Servlet Chaining & RequestDispatcher

38. servlet linking and requestdispatcher

40. ServletExec and RequestDispatcher

41. javax.servlet. RequestDispatcher

42. ServletRequest RequestDispatcher

44. ServletException in RequestDispatcher

45. Servlet RequestDispatcher Problem

47. why doesn't RequestDispatcher forward?

48. RequestDispatcher.forward()

49. Servlet with JFreeChart RequestDispatcher to view

Hello, i dont get the hang out of this: I have an html.file with a

-tag that forwards to a servlet. This servlet creates a "chart.png"-file and then forwards the request and the response to the view (result.jsp). Sadly the view cant use the previously created chart.png at compilation time, since it takes its time to write the file. So ...

54. Not able to navigate the user to another jsp in servlets using RequestDispatcher

Hello, I really need your help in this....I am making a jsp with ajax login page... using eclipse helios, Tomcat as server and DB2 as my database server.. I made the jsp login, and have successfully passed the parameters over to servlet for verification from database.. As the username and password gets verified from the database, I wish the servlet to ...

59. Question about RequestDispatcher

61. Servlet requestdispatcher to new tab