springmvc-返回值
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springmvc-返回值
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今天做了一個返回值的練習，將后臺的數據返回給前段頁面。
下面將實例進行記錄，方便后期自己的查找。
環境:
JDK1.8
Tomcat:8.0
win7
第一步：創建一個web項目并添加相關jar
項目目錄如下圖：
jsp頁面代碼如下：
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> </head> <body><form action="reg5.do"><input type="submit" value="提交" /></form><br><div>姓名：${name1 }<br>${list1 }<br> </div></body> </html>
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第二步：配置web.xml
web.xml代碼如下，里面的加了一個攔截器
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1"><display-name>springmvc3test</display-name><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list><servlet><servlet-name>springmvc3</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class></servlet><servlet-mapping><servlet-name>springmvc3</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping><filter><filter-name>characterEncodingFilter</filter-name><filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param></filter><filter-mapping><filter-name>characterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping></web-app>第三步：配置springmvc核心配置：springmvc-servlet.xml
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<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.2.xsd"> <!-- 注解驅動 --><mvc:annotation-driven/><!-- springmvc3的掃描驅動 --><context:component-scan base-package="com.zgy.controller"></context:component-scan> <!-- 試圖解析器 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/"></property> //返回原界面<property name="suffix" value=".jsp"></property> </bean></beans>?
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第四步：編寫UserInfo實體類：
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package com.zgy.domain;public class UserInfo {public Integer id;public String name;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}@Overridepublic String toString() {return "用戶ID=" + id + ", 用戶名=" + name + ",";}}?
第五步：編寫控制器類RegController
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package com.zgy.controller;import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView;import com.zgy.domain.UserInfo;@Controller public class RegController {@RequestMapping("/reg.do")public String queryUser1(HttpServletRequest request) {String name="華總管";request.setAttribute("name1",name);UserInfo user = new UserInfo();user.setId(9527);user.setName("華安");request.setAttribute("user",user);return "index"; }@RequestMapping("/reg2.do")public String queryUser2(Map<String,Object> map) {UserInfo user = new UserInfo();user.setId(1002);user.setName("石榴");map.put("user3",user);return "index";}@RequestMapping("/reg3.do")public String queryUser3(Model model) {UserInfo user = new UserInfo();user.setId(1);user.setName("華夫人");model.addAttribute("user3",user);return "index"; }@RequestMapping("/reg4.do")public String queryUser4(Model model) {UserInfo user = new UserInfo();user.setId(1);user.setName("華夫人");List<UserInfo> list = new ArrayList<UserInfo>();list.add(user);model.addAttribute("list1",list); return "index"; }}?
轉載于:https://www.cnblogs.com/zhaoguoying/p/11393795.html
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