搭建spring mvc环境，导入springmvc开发所需的包

web.xml配置

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee "          id="WebApp_ID" version="2.5">   <welcome-file-list>     <welcome-file>/index.jsp</welcome-file>   </welcome-file-list>   <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>classpath:/applicationContext.xml</param-value>   </context-param>   <!-- 配置spring启动listener入口 -->   <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>   </listener>   <filter>     <filter-name>encodingFilter</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>     <init-param>       <param-name>forceEncoding</param-name>       <param-value>true</param-value>     </init-param>   </filter>   <!-- encoding filter for jsp page -->   <filter-mapping>     <filter-name>encodingFilter</filter-name>     <url-pattern>/*</url-pattern>   </filter-mapping>   <!-- 配置springmvc启动dispatcherServlet入口 -->   <!-- 中央控制器 -->   <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:/spring-mvc.xml</param-value>     </init-param>     <load-on-startup>1</load-on-startup>   </servlet>   <servlet-mapping>     <servlet-name>springMVC</servlet-name>     <!-- struts习惯使用/*，在springmvc不管用 -->     <url-pattern>/</url-pattern>   </servlet-mapping>   <servlet-mapping>   <!--这里不加*.js的话，无法通过src=""引用webapp下的文件，其它同理-->     <servlet-name>default</servlet-name>     <url-pattern>*.js</url-pattern>   </servlet-mapping>   <servlet-mapping>     <servlet-name>default</servlet-name>     <url-pattern>*.css</url-pattern>   </servlet-mapping>   <servlet-mapping>     <servlet-name>default</servlet-name>     <url-pattern>*.jpg</url-pattern>   </servlet-mapping>   <display-name>Archetype Created Web Application</display-name> </web-app> 3.===================spring-mvc.xml的内容（我的放在resources目录下）=================================== <?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"        xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans                                           ">     <!-- 激活注解模式，如@Controller -->     <mvc:annotation-driven />     <!-- 对包中的类的注解进行扫描，创建Bean及自动依赖注入  -->     <context:component-scan base-package="cn.ys.controller" />     <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />     <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">         <property name="prefix">             <value>/</value>         </property>         <property name="suffix">             <value>.jsp</value>         </property>     </bean> </beans> 4.===============编写一个输出json格式的Controller（jkson等jar包）======package cn.ys.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.servlet.ModelAndView; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * @author 邓聪  E-mail:[email protected] * @version 创建时间： * 类说明    输出一个长度为10的json数组 */ @Controller public class ShowController {     @ResponseBody//输出json对象的注解     @RequestMapping ( "/showTime" )     public List<String> showTime() {         SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");         String format = simpleDateFormat.format(new Date());         ArrayList<String> strings = new ArrayList<String>();         for (int i=0;i<10;i++){             strings.add(format);         }         return strings;     } } 5.==================index.jsp=============================<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <%--   Created by IntelliJ IDEA.   User: Administrator   Date: 2017/10/6   Time: 19:48   To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head>     <title>Title</title>     <script src="http://code.jquery.com/jquery-1.7.2.min.js"></script>     <script type="text/javascript" >         $(document).ready(function(){             //每秒发送一个请求。             setInterval(function () {                 $.ajax({url:"/showTime",success:function(result){                     //将返回的json数组（result）的第一个元素添加到id为time的标签文本中                     $("#time").html(result[0].toString());                 }});             },1000)             $("#btn1").click(function(){                 $.ajax({url:"/showTime",success:function(result){                     $("#time").html(result[0].toString());                 }});             });         });     </script> </head> <body> <h2>Hello World!</h2><br> 当前系统时间：<div id="time" style="font-size: 36px ;color: red">${ requestScope.time }</div> <input type="button" id="btn1" value="获取时间"> </body> </html>

标签：springmvc下的jquery   ajax和json的等技术的简单运用