一、引言
本文使用springMVC和ajax做的一个小小的demo，实现将JSON对象返回到页面，没有什么技术含量，纯粹是因为最近项目中引入了springMVC框架。
二、入门例子
①. 建立工程,并导入相应spring jar包和解析json的包fastjson。
②. 在web.xml文件中配置Spring的核心类DispatcherServlet
③. 配置Spring的核心配置文件spring-servlet.xml
④. 编写实体类Person
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public class Person { 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; } public String toString() { return "[name: " + name + ", age: " + age + "]"; } } |
⑤. 编写控制器类PersonControll
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@Controller public class PersonControll { @RequestMapping("toAjax.do") public String toAjax() { return "ajax"; } @RequestMapping(value = "ajax.do", method = RequestMethod.GET) public void ajax(@ModelAttribute Person person,PrintWriter printWriter) { System.out.println(person); String jsonString = JSON.toJSONString(person, SerializerFeature.PrettyFormat); printWriter.write(jsonString); printWriter.flush(); printWriter.close(); } } |
⑥. 编写访问页面ajax.jsp
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<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>ajax for springMVC</title> <script type="text/javascript" src="js/jquery-1.6.2.min.js"></script> <script type="text/javascript"> $(function() { $("#click").click(function() { $.ajax( { type : "GET", url : "ajax.do", data : "name=zhangsan&age=20", dataType: "text", success : function(msg) { alert(msg); } }); }); }); </script> </head> <body> <input id="click" type="button" value="click to show person" /> </body> </html> |
⑦. 访问url: http://localhost:8080/springMVC/toAjax.do