how to pass a request of a servlet as a parameter to another helper

Question

Hello to all, I wonder how cn i pass a request parameter of a servlet as a parameter to another java file of my web app that doesm't have POST and GET methods?

Thanks in advance

Antonis

Answer 1

What's the problem with someObject.someMethod(request, response) ?

Answer 2

Simply by getting the request parameter from the HttpServletRequest object, and using it as a parameter.

void doGet(HttpServletRequest req,
                     HttpServletResponse resp)
              throws ServletException,
                     java.io.IOException {

  String param = req.getParameter("name_of_your_param");
  new YourOtherClass().yourOtherMethod(param);
  //implement the rest to return a response
}

I'm excluding obvious things like input validation on the parameter (e.g. if the http client didn't send the parameter in the request, the result of getParameter is null) and sending the response.

Please takes some time to become familiar with the Servlet API and refer to it whenever you are curious how to do something with your Servlets and Request/Response objects: http://download.oracle.com/docs/cd/E17802_01/products/products/servlet/2.5/docs/servlet-2_5-mr2/index.html

Answer 3

Your request always passes through a Servlet, so:

• extract the needed parameters there
• pass them as arguments to the helper

There is another option - to store what you need in a ThreadLocal variable, because each request is handled in a separate thread, but that's to be avoided.