SpringMVC實現前後臺數據交互

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
	
	<!-- 前端控制器 -->
	<servlet>
		<servlet-name>springmvc</servlet-name>
		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
		<init-param>
			<param-name>contextConfigLocation</param-name>
			<param-value>classpath:springmvc.xml</param-value>
		</init-param>
	</servlet>

	<servlet-mapping>
		<servlet-name>springmvc</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
  
</web-app>

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	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"
	xmlns:mvc="http://www.springframework.org/schema/mvc"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">

	<!-- 配置@controller掃描包 -->
	<context:component-scan base-package="com.test.springmvc.controller" />
	
	<mvc:default-servlet-handler/>
	
	<mvc:annotation-driven/>
	
	<!-- 配置視圖解析器 -->
	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/"/>
		<property name="suffix" value=".jsp"/>
	</bean>
	
</beans>

UserInfo.java

package com.test.springmvc.pojo;

public class UserInfo {
	private String userName;
	private int age;
	private String address;

	public String getUserName() {
		return userName;
	}

	public void setUserName(String userName) {
		this.userName = userName;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

	@Override
	public String toString() {
		return "UserInfo [userName=" + userName + ", age=" + age + ", address="
				+ address + "]";
	}
}

TestController.java

package com.test.springmvc.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.test.springmvc.pojo.UserInfo;

@Controller
@RequestMapping("/testController")
public class TestController {

	@ResponseBody
	@RequestMapping("/getUserInfo")
	public UserInfo getUserInfo(){
		UserInfo userInfo = new UserInfo();
		userInfo.setUserName("Jenny");
		userInfo.setAge(20);
		userInfo.setAddress("shanghai");
		return userInfo;
	}
}

瀏覽器輸入：http://localhost:8080/Test/testController/getUserInfo