服务器概念和各种协议

 package test;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
//http://localhost:8080/web001/TestServlet
@WebServlet("/TestServlet")
public class TestServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//        request.setCharacterEncoding("utf-8");
//       response.setCharacterEncoding("utf-8");
        response.setHeader("content-type","text/html;charset=UTF-8");

        System.out.println("doPost有人请求我呢...");

        response.getWriter().write("hello world!!! dopost");
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//        request.setCharacterEncoding("utf-8");
//        response.setCharacterEncoding("utf-8");
        response.setHeader("content-type","text/html;charset=UTF-8");
        System.out.println("doGet有人请求我呢...");
//访问http://localhost:8080/web001_war_exploded/TestServlet出现hello world!!! dopost
        response.getWriter().write("<h1>我是一个漂亮的Servlet服务器<h1>");
    }
}