Servlets and web components

In this section, we begin the study of web components present in Java EE 7 and supported by WildFly 10, starting from the servlets. Let's start with a simple example of a servlet:

@WebServlet("/SimpleServlet")
public class SimpleServlet extends HttpServlet {
   @Override
   protected void doGet(HttpServletRequest request, HttpServletResponse                      response) throws ServletException, IOException   
   {
      response.getWriter().print("my GET");
   }
   @Override
   protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException  
   {
response.getWriter().print("my POST");
   }
}

This servlet represents two HTTP methods, GET and POST, represented by the doGet and doPost methods inherited by the javax.servlet.http.HttpServlet abstract class.

Note

More information on the HTTP methods can be seen in Chapter 6, Creating REST Services, in the REST and HTTP paragraph.

According to the chosen HTTP method...