requestdispatcher

问题 In my jsp page I have two forms.one form action goes to save_product servlet and other one is goes to save_images servlet. There is only one submit button. when click submit button first I want to save products and then want to save images. I tried it using jQuery and Request.getRequestDispatcher(String).forward() .but it is not succeeded. This is my jsp: <button type="submit" class="btn btn-default" id="formsave1">Save</button> <div class=container> <div class="panel"> <form action="../save

问题 I am confused about the meaning of request.getContextPath(). My file layout is as follows: MyServer/WebContent: /Resources/MyImage.jpg /Resources/Scripts/MyScript.js /WEB-INF/JSP/MyPage.jsp In the MyPage.jsp I am able to locate the JavaScript and image by <script src="${pageContext.request.contextPath}/Resources/Scripts/MyScript.js"> and <img src="${pageContext.request.contextPath}/Resources/MyImage.img"> From this I concluded that ${pageContext.request.contextPath} dynamically resolved to

问题 I am trying to pass data from one servlet to another using the RequestDispatcher. This is my code for the Dispatcher. String address; address = "/Java Resources/src/coreservlets/MapOut.java"; RequestDispatcher dispatcher = request.getRequestDispatcher(address); dispatcher.forward(request, response); When I try to run it, it gives me an error saying the path is unavailable. Do I have to include something for the dispatcher to send to another servlet? 回答1: You just need to pass servlet-mapping

问题 Am having a HTML page http://www.mywebapp.com/sample.html which is used from remote server. am passing the HTML URL as hidden form like this in the same HTML form, <form action="/myservlet?userid=12345" method="post" enctype="multipart/form-data"> <input type="file" name="file"> <input type="submit" value="Submit"> <input type="hidden" name="url" value="http://www.mywebapp.com/sample.html"/> </form> In my servlet i got the hidden URL http://www.mywebapp.com/sample.html and stored it as String

问题 Is this possible? RequestDispatcher rd = request.getRequestDispatcher("index.html"); rd.forward(request, response); 回答1: Yes. you can dispatch a request to a HTML page. 回答2: Yes it will work. You can get the request dispatcher for static/dynamic pages. 来源： https://stackoverflow.com/questions/11223556/can-we-dispatch-request-to-an-html-inside-servlet

问题 I have problem with RequestDispatcher in Java Servlet, it didn't forward to the specific url if the servlet path is not in root path protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String userPath=request.getServletPath(); String view = null; if(userPath.equals("/admin")) //it's okay, forwarded { view="admin"; } else if(userPath.equals("/admin/tambahArtikel")) //it's not forwarded { view="tambahArtikel"; } else if(userPath

问题 I have a filter which processes requests in order to log them, so I can keep track of which session hit a page at what time with what request parameters. works great... posting from jsp to jsp, or making a direct call to a jsp. When a form is posted to a servlet which forwards that request to a new jsp, however, I am unable to see which jsp the request was forwarded to. For example, suppose I have a login page, which posts to a LoginServlet, which then forwards the request to either index.jsp

问题 I have a problem related to HttpServletRequest. Somehow it can not be not passed to the called filter with Forward. When I try to access the fields on request and the session of the request I get null pointer exception. Here is the code: As you can see I am printing the content of the session just before forwarding the request. And all the fields that I put in it is there. I see it in logs. HttpServletRequest reqServ = (HttpServletRequest)request; Enumeration sessionKeys = reqServ.getSession(

问题 In servlet we can use requestdispatcher and it will forward from one servlet to another servlet with same session in same project.but if i am using different project getRequestDispatcher is not working.its giving 404 error.because its appending servlet name before the url. how can i achieve getRequestDispatcher in different project in same server? RequestDispatcher rd = request.getRequestDispatcher("/v1/status1/toreply1"); rd.forward(request, response); In same project getRequestDispatcher

问题 My Java web app uses two servlets to control form processing and navigation, /AppControl and /ViewControl . AppControl processes form submissions, then forwards the request to ViewControl, which determines which page was processed and re-forwards the request to the "next" page. The first forward (between servlets) works okay; but the second (from ViewControl to the JSP page) malforms the URL, and I get a 404. The servlets are both mapped to root of context, the JSP files are in a subfolder