springMVC中响应的返回值获取方式

package com.hope.controller;

import com.hope.domain.User;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author newcityman
 * @date 2019/11/27 - 20:38
 */
@Controller("userController")
@RequestMapping(path ={"/user"} )
public class UserController {
    /**
     *  返回值是String
     * @param model
     * @return
     */
    @RequestMapping(path = "/testString")
    public String testString(Model model){
        System.out.println("testString执行成功");
        User user = new User();

        user.setUsername("zmy");
        user.setPassword("123");
        user.setAge(12);
        model.addAttribute("user",user);
        return  "success";
    }

    /**
     * 测试testVoid方法
     * @param
     * @return
     */

    @RequestMapping(path = "/testVoid")
    public void testVoid(HttpServletRequest request, HttpServletResponse response) throws Exception {
        System.out.println("testString执行成功");
        //请求转发
//        request.getRequestDispatcher("/WEB-INF/pages/success.jsp").forward(request,response);
        //重定向(重定向是不能够直接发送请求去访问WEB-INF下的页面的)
//        response.sendRedirect(request.getContextPath()+"/index.jsp");
        //直接流进行响应
        //设置中文乱码
        response.setCharacterEncoding("UTF-8");
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().print("hello 张三");
        return;
    }


}

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
      <a href="user/testString">testString</a><br/>

      <a href="user/testVoid">testVoid</a>
</body>
</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h3>执行成功</h3>

${user.username}<br/>
${user.age}<br/>
${user.password}<br/>
</body>
</html>

posted on 2019-11-27 21:37 小猪_佩奇阅读(999) 评论(0) 编辑收藏举报