StackOverflow2013

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plurals

POPass value servlet to jsp
primarykey
Id
18585333
data
AcceptedAnswerId
0
AnswerCount
1
ClosedDate
CommentCount
8
CommunityOwnedDate
CreationDate
2013-09-03T06:14:22.613
FavoriteCount
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LastActivityDate
2013-09-03T06:30:02.920
LastEditDate
2013-09-03T06:24:27.723
LastEditorUserId
2718054
OwnerUserId
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PostTypeId
1
Score
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ViewCount
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LastEditorDisplayName
text
Body
I want to pass value servlet to jsp. set value in servlet and use in jsp page I getting NullPointerException below is my code jsp <pre><code><body> <% String message = (String) request.getAttribute("message"); out.println("Servlet communicated message to JSP: "+ message); Vector vecObj = (Vector) request.getAttribute("vecBean"); out.println("Servlet to JSP communication of an object: "+vecObj.get(0)); %> </body> </code></pre> java <pre><code>public class ServletToJSP extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //communicating a simple String message. String message = "Example source code of Servlet to JSP communication."; request.setAttribute("message", message); //communicating a Vector object Vector vecObj = new Vector(); vecObj.add("Servlet to JSP communicating an object"); request.setAttribute("vecBean",vecObj); //Servlet JSP communication RequestDispatcher reqDispatcher = getServletConfig().getServletContext().getRequestDispatcher("javaPapers.jsp"); reqDispatcher.forward(request,response); } } </code></pre> Error Log I didnt do any chnages in web.xml I didnt do any chnages in web.xml <pre><code>org.apache.jasper.JasperException: An exception occurred processing JSP page /javaPapers.jsp at line 21 18: out.println("Servlet communicated message to JSP: "+ message); 19: 20: Vector vecObj = (Vector) request.getAttribute("vecBean"); 21: out.println("Servlet to JSP communication of an object: "+vecObj.get(0)); 22: %> 23: </body> 24: </html> Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:553) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:457) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) root cause java.lang.NullPointerException org.apache.jsp.javaPapers_jsp._jspService(javaPapers_jsp.java:83) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.12 logs. </code></pre>
Tags
<java><jsp><servlets>
Title
Pass value servlet to jsp
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USNick
UserOwnerUserId
1. USNick
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

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