How to write RequestDispatcher in the doPost()

[sumanta123]

Dear All,
In the DoPost() i am calling the function sendTextMail(strFromUser, strToUsers, strCcUsers, strSubject, strMessageBody, strobjAttachments) in the Try catch block.
Now the code compiles perfectly.
My doubt is how i will write RequestDispatcher method in Dopost()
if it is success then it will go to
RequestDispatcher rd=request.getRequestDispatcher(response.encodeURL ("/help/SuccessApplicationStatus.jsp"));
rd.forward(request,response);

else if it is error then
RequestDispatcher rd=request.getRequestDispatcher(response.encodeURL ("/error/errorApplicationStatus.jsp"));
rd.forward(request,response);

Please look at my code and guide me for the needful.

Thanks in Advance.
Regards
Sumanta Panda

public void doPost(HttpServletRequest request, HttpServletResponse response)
 throws IOException, ServletException {
 
 String strFromUser=null;
 String strToUsers=null;
 String strCcUsers=null;
 String strApplnno=null;
 String strSubject=null;
 String strMessageBody=null;
 String []strobjAttachments=null;
 String errorMessage="";
 HashMap result=null;
 strFromUser=request.getParameter("txtMail");
 
strToUsers="[e-mail]";
strCcUsers="[e-mail]";
strApplnno=request.getParameter("txtApplno");
strSubject="Application Form Status";
//strMessageBody=strApplnno.concat("-Application Form Status");
 strMessageBody= "Application Form Status for Application Form no.-".concat(strApplnno);
 
 try
 {
 
 sendTextMail(strFromUser, strToUsers, strCcUsers, strSubject, strMessageBody, strobjAttachments);
 //RequestDispatcher rd=request.getRequestDispatcher(response.encodeURL("/help/SuccesspageApplicationStatus.jsp"));
// rd.forward(request,response);
 
 }
 catch(MailingException mEx)// Trap MailingException
 {
 try {
 throw mEx;
 } catch (MailingException e) {
     //RequestDispatcher rd=request.getRequestDispatcher(response.encodeURL("/error/ErrorpageApplicationStatus.jsp"));
    //rd.forward(request,response);
     System.out.println("Data2"); 
 }
 }
 
 
 
 } 
 

 public void sendTextMail(String strFromUser, String strToUsers, String strCcUsers, String strSubject, String strMessageBody, String[] objAttachments) throws MailingException
 {
 try
 {
 // Get a Properties object
 
 
 java.util.Properties objProps = System.getProperties();
 objProps.put("mailhub-ap.ap.ssmb.com",strHost);
 
 // Get a Session object
 Session objSession = Session.getDefaultInstance(objProps, null);
 
 // Construct a new message
 MimeMessage objMessage=new MimeMessage(objSession);
 
 // Set up the parameters for sending the message
 if ( strFromUser != null )
 objMessage.setFrom(new InternetAddress(strFromUser));
 objMessage.setSubject(strSubject);
 
 if (strToUsers == null)
 throw new MailingException("Email id of recipients not defined");
 else
 {
 if (strToUsers != null)
 objMessage.setRecipients(Message.RecipientType.TO,InternetAddress.parse(strToUsers));
 
 }
 
 if(objAttachments==null)
 {
 objMessage.setText(strMessageBody);
 }
 else
 {
 Multipart mpMainPart=new MimeMultipart();
 
 //Creating multi-part message
 BodyPart bpMessageBodyPart=new MimeBodyPart();//this is the Mail Message BodyPart
 bpMessageBodyPart.setText(strMessageBody+"\n");
 
 mpMainPart.addBodyPart(bpMessageBodyPart);
 
 for(int intCount=0;intCount<objAttachments.length;intCount++)
 {
 BodyPart bpFileBodyPart=new MimeBodyPart();//this is the Attachment BodyPart
 DataSource dsSource=new FileDataSource(new File(objAttachments[intCount]));
 bpFileBodyPart.setDataHandler(new DataHandler(dsSource));
 bpFileBodyPart.setFileName(objAttachments[intCount]);
 
 mpMainPart.addBodyPart(bpFileBodyPart);
 }
 
 objMessage.setContent(mpMainPart);
 }
 
 // Send the message
 Transport.send(objMessage);
 }
 catch(MessagingException ex)// Trap MessaginException
 { throw new MailingException(ex); }
 catch(MailingException mEx)// Trap MailingException
 { throw mEx; }
 
 }
 
 }
 

[r035198x]

Please use code tags when posting code and make sure that the code is formatted.

Do the forwarding after the catch statement

String url = "/help/SuccesspageApplicationStatus.jsp";
try  {
   sendTextMail(strFromUser, strToUsers, strCcUsers, strSubject, strMessageBody, strobjAttachments);  
} 
catch(MailingException mEx) {
     url = "/error/errorApplicationStatus.jsp";
}
RequestDispatcher rd=request.getRequestDispatcher(response.encodeURL(url));  rd.forward(request,response); 
 

[sumanta123]

Dear r035198x Sir,
I did the same thing the code which you have rectified.

Please sir guide me for the needful.
Thanks in advance.
Regards
Sumanta


But Now it is showing an error

for host 127.0.0.1 trying to POST /servlet/customerserviceServlet.ApplicationStatusSevlet, service-j2ee reports: StandardWrapperValve[invoker]: WEB2792: Servlet.service() for servlet invoker threw exception
java.lang.IllegalStateException: WEB2645: Cannot forward after response has been committed

[r035198x]

Post the code that you have now. Please use code tags when you post the code.