web.xml文件
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app><display-name>Archetype Created Web Application</display-name> <!--编码过滤器--> <filter> <filter-name>CharactorEncoding</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> <filter-mapping> <filter-name>CharactorEncoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!--配置前端控制器--><servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--初始化参数--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc07RetuenObject.xml</param-value> </init-param> <!--意思:Tomact启动，就将servlet创建好放入内存中了--> <load-on-startup>1</load-on-startup></servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern></servlet-mapping> </web-app>
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd "> <!--扫描包--> <context:component-scan base-package="cn.sjl.day04returnobject"></context:component-scan>
<!--访问静态资源--> <mvc:resources mapping="/js/**" location="/js/"></mvc:resources> <!--注解驱动--> <mvc:annotation-driven/></beans>
返回list集合类型
//控制器@Controllerpublic class FirstController { /** * 返回list集合类型 * @return */ @RequestMapping("/third") //控制器方法（即访问方法） @ResponseBody //响应体 public Object doThird(){ List<Student> list=new ArrayList<Student>(); Student student=new Student(); student.setName("李四"); student.setAge(20);
Student student1=new Student(); student1.setName("张三"); student1.setAge(20);
list.add(student); list.add(student1); return list; }}
return.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %><html><head> <title>返回值数值</title></head><script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.8.3.min.js"></script><script type="text/javascript"> $(function(){ $("#btn").click(function(){ $.ajax({ url:"${pageContext.request.contextPath}/third", success:function (data) { //遍历list集合 $.each(data,function (i,dom) { alert(dom.name); });
} }); }); });
</script><body><input type="button" id="btn" value="Ajax"/></body></html>
访问方式
返回Map集合类型
返回Map集合类型
public class Student { private String name; private Integer age;
public String getName() {return name;} public void setName(String name) { this.name = name; }
public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; }}
@Controllerpublic class FirstController { /** * map类型 * @return */ @RequestMapping("/four") //控制器方法（即访问方法） @ResponseBody //响应体 public Object doFour(){ Map<String,Student> map=new HashMap<String, Student>(); Student student=new Student(); student.setName("李四"); student.setAge(20); map.put(student.getName(),student);
Student stu=new Student(); stu.setName("张三2"); stu.setAge(25); map.put(stu.getName(),stu); return map; }}
return.jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %><html><head> <title>返回值数值</title></head><script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.8.3.min.js"></script><script type="text/javascript"> $(function(){ $("[type=button]").click(function(){ $.ajax({ url:"${pageContext.request.contextPath}/four", success:function (data) { //遍历map集合 $.each(data,function (i,dom) { alert(dom.name); });
} }); }); });
</script><body><input type="button" id="btn" value="Ajax"/></body></html>
时间： 2024-10-29 11:31:47