Servlet处理请求业务
Servlet核心处理业务的是service方法，重写service方法即可
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>请求处理Insert title here
测试servlet上下文对象
package com.xzit.servlet; import java.io.IOException; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * Servlet implementation class ResponseServlet */ @WebServlet("/ResponseServlet") public class ResponseServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response) */ protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String arg = request.getParameter("arg"); request.setAttribute("arg", arg);//将数据存储在请求作用域中 /* 设置响应内容主题类型及编码格式 */ response.setContentType("text/html;charset=utf-8"); response.setCharacterEncoding("utf-8"); /* 使用response对象实现页面资源的重定向 */ response.sendRedirect("response.jsp"); } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>Insert title here <% String mess = request.getAttribute("arg").toString(); %> <%=mess %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>Insert title here <% String mess = request.getAttribute("arg").toString(); %> <%=mess %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" import="com.xzit.entity.*"%>Insert title here <%=application.getAttribute("shige") %>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" import="com.xzit.entity.*"%>Insert title here <%! Person per=null; %> <% per = (Person)request.getAttribute("person"); %> 用户信息：<%=per.getName()%>
<%=per.getSex() %>
<?xml version="1.0" encoding="UTF-8"?>ServletApp2 index.jsp