package cn.servlet;

 import java.io.IOException;

 import java.io.PrintWriter;

 import javax.servlet.GenericServlet;

 import javax.servlet.ServletException;

 import javax.servlet.ServletRequest;

 import javax.servlet.ServletResponse;

 public class MyGenericServlet extends GenericServlet{

     @Override

     public void service(ServletRequest req, ServletResponse resp)

             throws ServletException, IOException {

         resp.setCharacterEncoding("GBK");

          resp.getWriter().println("中文！");

          resp.getWriter().print("hello,我继承了GenericServlet");

     }

 }

<servlet>

    <servlet-name>mygenericservlet</servlet-name>

    <servlet-class>cn.servlet.MyGenericServlet</servlet-class>

</servlet>

<servlet-mapping>

    <servlet-name>mygenericservlet</servlet-name>

    <url-pattern>/servlet/MyGenericServlet</url-pattern>

</servlet-mapping>