处理器方法的返回值：
- ModelAndView：既要传递数据又要跳转资源
- String 跳转字符资源，不能传递数据，可以用model、map、modelmap来承载数据
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.7.2.min.js"></script>
8 <script type="text/javascript">
9 $(function(){
10 $("#myButton").click(function(){
11 $.ajax({
12 url:"${pageContext.request.contextPath}/springmvc/hello",
13 type: "POST",
14 success: function(data){
15 var data1 = eval("("+data+")");
16 alert(data1.flavor);
17 }
18 })
19 })
20
21 })
22 </script>
23 <title>Insert title here</title>
24 </head>
25 <body>
26 <button id="myButton">点击我呀！</button>
27 </body>
28 </html>
1 package com.bjsxt.handlers;
2
3 import java.io.IOException;
4
5 import javax.servlet.http.HttpServletResponse;
6
7 import org.springframework.context.annotation.Scope;
8 import org.springframework.stereotype.Controller;
9 import org.springframework.web.bind.annotation.RequestMapping;
10
11 //后台控制器
12 @Controller
13 @Scope("prototype")
14 @RequestMapping("/springmvc")
15 public class MyController{
16 //接收json字符串封装成对象
17 @RequestMapping(value="/hello",produces="text/html;charset=utf-8")
18 public void hello1(HttpServletResponse response) throws IOException{
19 String json="{"name":"weilong","flavor":"hot"}";
20 response.getWriter().print(json);
21 }
22
23 }
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:mvc="http://www.springframework.org/schema/mvc"
6 xmlns:tx="http://www.springframework.org/schema/tx"
7 xmlns:aop="http://www.springframework.org/schema/aop"
8 xsi:schemaLocation="
9 http://www.springframework.org/schema/beans
10 http://www.springframework.org/schema/beans/spring-beans.xsd
11 http://www.springframework.org/schema/tx
12 http://www.springframework.org/schema/tx/spring-tx.xsd
13 http://www.springframework.org/schema/aop
14 http://www.springframework.org/schema/aop/spring-aop.xsd
15 http://www.springframework.org/schema/mvc
16 http://www.springframework.org/schema/mvc/spring-mvc.xsd
17 http://www.springframework.org/schema/context
18 http://www.springframework.org/schema/context/spring-context.xsd">
19 <!-- 注册组件扫描器 -->
20 <context:component-scan base-package="com.bjsxt.handlers"></context:component-scan>
21 <!-- 注册注解驱动 -->
22 <mvc:annotation-driven/>
23 <!-- 注册视图解析器 -->
24 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
25 <property name="prefix" value="/jsp/"></property>
26 <property name="suffix" value=".jsp"></property>
27 </bean>
28
29 <!-- 静态资源无法访问第二种解决方案 -->
30 <!-- <mvc:default-servlet-handler/> -->
31 <!-- 静态资源无法访问第三种解决方案 -->
32 <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
33 <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
34 </beans>
1 <?xml version="1.0" encoding="UTF-8"?>
2 <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">
3 <display-name>springmvc-01-primary</display-name>
4 <welcome-file-list>
5 <welcome-file>index.jsp</welcome-file>
6 </welcome-file-list>
7 <!-- 静态资源无法访问第一种解决方案 -->
8 <!--
9 <servlet-mapping>
10 <servlet-name>default</servlet-name>
11 <url-pattern>*.png</url-pattern>
12 </servlet-mapping>
13 <servlet-mapping>
14 <servlet-name>default</servlet-name>
15 <url-pattern>*.js</url-pattern>
16 </servlet-mapping>
17 <servlet-mapping>
18 <servlet-name>default</servlet-name>
19 <url-pattern>*.css</url-pattern>
20 </servlet-mapping>
21 -->
22 <!-- 注册springmvc前端控制器（中央调度器） -->
23 <servlet>
24 <servlet-name>springmvc</servlet-name>
25 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
26 <!-- 指定springmvc配置文件的路径以及名称 -->
27 <init-param>
28 <param-name>contextConfigLocation</param-name>
29 <param-value>classpath:springmvc.xml</param-value>
30 </init-param>
31 </servlet>
32 <servlet-mapping>
33 <servlet-name>springmvc</servlet-name>
34 <url-pattern>/</url-pattern>
35 </servlet-mapping>
36 </web-app>
- Object(涉及注解@ResponseBody,注册mvc注解驱动，导入jackson2.5包)
1 package com.bjsxt.handlers;
2
3 import org.springframework.context.annotation.Scope;
4 import org.springframework.stereotype.Controller;
5 import org.springframework.web.bind.annotation.RequestMapping;
6 import org.springframework.web.bind.annotation.ResponseBody;
7
8 //后台控制器
9 @Controller
10 @Scope("prototype")
11 @RequestMapping("/springmvc")
12 public class MyController{
13 //接收json字符串封装成对象
14 @RequestMapping(value="/hello",produces="text/html;charset=utf-8")
15 @ResponseBody
16 public Object hello1() {
17 return "aaa";
18 }
19
20 }
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.7.2.min.js"></script>
8 <script type="text/javascript">
9 $(function(){
10 $("#myButton").click(function(){
11 $.ajax({
12 url:"${pageContext.request.contextPath}/springmvc/hello",
13 type: "POST",
14 success: function(data){
15 alert(data);
16 }
17 })
18 })
19
20 })
21 </script>
22 <title>Insert title here</title>
23 </head>
24 <body>
25 <button id="myButton">点击我呀！</button>
26 </body>
27 </html>
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:context="http://www.springframework.org/schema/context"
5 xmlns:mvc="http://www.springframework.org/schema/mvc"
6 xmlns:tx="http://www.springframework.org/schema/tx"
7 xmlns:aop="http://www.springframework.org/schema/aop"
8 xsi:schemaLocation="
9 http://www.springframework.org/schema/beans
10 http://www.springframework.org/schema/beans/spring-beans.xsd
11 http://www.springframework.org/schema/tx
12 http://www.springframework.org/schema/tx/spring-tx.xsd
13 http://www.springframework.org/schema/aop
14 http://www.springframework.org/schema/aop/spring-aop.xsd
15 http://www.springframework.org/schema/mvc
16 http://www.springframework.org/schema/mvc/spring-mvc.xsd
17 http://www.springframework.org/schema/context
18 http://www.springframework.org/schema/context/spring-context.xsd">
19 <!-- 注册组件扫描器 -->
20 <context:component-scan base-package="com.bjsxt.handlers"></context:component-scan>
21 <!-- 注册注解驱动 -->
22 <mvc:annotation-driven/>
23 <!-- 注册视图解析器 -->
24 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
25 <property name="prefix" value="/jsp/"></property>
26 <property name="suffix" value=".jsp"></property>
27 </bean>
28
29 <!-- 静态资源无法访问第二种解决方案 -->
30 <!-- <mvc:default-servlet-handler/> -->
31 <!-- 静态资源无法访问第三种解决方案 -->
32 <mvc:resources location="/images/" mapping="/images/**"></mvc:resources>
33 <mvc:resources location="/js/" mapping="/js/**"></mvc:resources>
34 </beans>