零java基础搞定微信Server_4_写一个servlet的DEMO

public class hello extends HttpServlet
{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    public void doGet(HttpServletRequest req, HttpServletResponse resp)
               throws ServletException,IOException
    {
        //得到PrintWriter对象。
        PrintWriter out=resp.getWriter();
        //向客户端发送字符数据。
        out.println("Hello World");
        out.close();
    }
}