Servlets and Object Serialization

Question

Say, you have a Servlet which sends Objects across an ObjectOutputStream which is obtained from its corresponding HttpServletResponse.
res.getOutputStream().writeObject(myObject);
From what I observe it is impossible to obtain an ObjectInputStream from the URLConnection of the calling servlet until it is finished processing.
Does anyone know if there is a way to do this?
URLConnection conn = _myUrl.openConnection();
conn.setDoOutput(false);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "application/octet-stream");
ObjectInputStream in = new ObjectInputStream(conn.getInputStream());
System.out.println("This won't get called until the calling Servlet has finished processing, is it possible to retrieve before???");
String s = in.readObject().toString();

Answer 1

hi , I made a similar query some time ago and came up with the following solution.
serverUrl_ = new URL(url_);
               HttpURLConnection con_ = (HttpURLConnection)serverUrl_.openConnection();
               con_.setRequestMethod("POST");
               con_.setDoOutput(true);
               con_.setDoInput(true);
               con_.setUseCaches(false);
               ObjectOutputStream out_ = new ObjectOutputStream(con_.getOutputStream());
                    out_.writeObject(new String("a test example to string"));
The servlet would read this in as follows:
     protected void doPost(HttpServletRequest request_, HttpServletResponse response_){
          try{
               //get required io streams
               ObjectInputStream ois_ = new ObjectInputStream(request_.getInputStream());
               ObjectOutputStream object_ = new ObjectOutputStream(response_.getOutputStream());
               String test_ = (String)ois_.readObject();
               if(test_ instanceof String){
                    System.out.println("String value is: "+test_);
               } else {
                         System.out.println("error reading string")
          } catch(Exception ioe){
               ioe.printStackTrace();
this should give you the basic idea how to pass objects through http.
Hope it helps
rob