Question

I want to create an application that will fetch a JSON object from a servlet to deserialize it, and then use its variables to do other things.

My servlet has the following code in the doPost:

 protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

      ObjectOutputStream os;
      os = new ObjectOutputStream(response.getOutputStream());

      String s = new String("A String");

      Gson gson = new Gson();
      String gsonObject= gson.toJson(s);

      os.writeObject(gsonObject);
      os.close();

    }

Now, while the servlet is running, I can access it via a browser, if I post same code in the doGet method, that would download a servlet file, which is not what I want.

What should I use in my second application that would connect to the servlet, fetch the object, so that I can manipulate it later?

Thanks in advance.

Answer 1

You need few changes in your servlet :

protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
   String s = new String("A String");
 String json = new Gson().toJson(s);
 this.response.setContentType("application/json");
 this.response.setCharacterEncoding("UTF-8");
 Writer writer = null;
 try {
        writer = this.response.getWriter();
        writer.write(json);
 } finally {
    try {
        writer.close();
    } 
    catch (IOException ex) {
    }
 }
}