浅谈struts2、jquery与json的集成

struts2、jquery与json的集成是怎样实现异步交互的，下面我们来做个综合的小案例。
做案例的前提是：先要引入必要的jar包。

比如：

1、struts2-core-2.x.x.x.jar :Struts 2框架的核心类库
2、xwork-2.x.x.jar :XWork类库，Struts 2在其上构建
3、ognl-2.x.x.jar :对象图导航语言（Object Graph Navigation Language），struts2框架通过其读写对象的属性
4、freemarker-2.3.x.jar :Struts 2的UI标签的模板使用FreeMarker编写
5、commons-logging-1.1.x.jar :ASF出品的日志包，Struts 2框架使用这个日志包来支持Log4J和JDK 1.4+的日志记录。
6、commons-fileupload-1.2.1.jar 文件上传组件，2.1.6版本后必须加入此文件
7、struts2-json-plugin.jar struts2与json的插件


cn.z_xiaofei168.domain包



Java代码

001	packagecn.z_xiaofei168.domain;

002

003	importjava.io.Serializable;

004	importjava.util.Date;

005

006	publicclassUserimplementsSerializable {

007

008

/**

009	* @author z_xiaofei168

010

*/

011	privatestaticfinallongserialVersionUID = 1L;

012

013	/** 用户的编号 */

014	privateInteger id;

015	/** 用户的名称 */

016	privateString name;

017	/** 用户的密码 */

018	privateString pass;

019	/** 用户的邮箱 */

020	privateString email;

021	/** 用户的注册日期 */

022	privateDate rdate;

023

024	publicUser() {

025

super();

026

}

027

028	//以下省略所以的set和get方法

029

}

030

031

032

033	cn.z_xiaofei168.action包

034

035

036

Java代码

037	packagecn.z_xiaofei168.action;

038

039	importjava.util.List;

040

041	importcn.z_xiaofei168.dao.Pagination;

042	importcn.z_xiaofei168.domain.User;

043	importcn.z_xiaofei168.service.UserServiceImpl;

044

045	importcom.opensymphony.xwork2.ActionSupport;

046

047	publicclassUserActionextendsActionSupport {

048

049

/**

050	* @author z_xiaofei168

051

*/

052	privatestaticfinallongserialVersionUID = 1L;

053

054	/** 业务层对象 */

055	privateUserServiceImpl userServiceImpl;

056	privateList<User> list;

057

058	publicUserServiceImpl getUserServiceImpl() {

059	returnuserServiceImpl;

060

}

061

062	/** set方法注入 */

063	publicvoidsetUserServiceImpl(UserServiceImpl userServiceImpl) {

064	this.userServiceImpl = userServiceImpl;

065

}

066

067	publicList<User> getList() {

068	returnlist;

069

}

070

071	publicvoidsetList(List<User> list) {

072	this.list = list;

073

}

074

075	/** 模糊查新的方法 */

076	publicString findByDarkName()throwsException{

077	list = userServiceImpl.findByDarkName(user.getName());

078	return"findByDarkName";

079

}

080

}

081

082

083

084	cn.z_xiaofei168.dao包

085

086

087

088

Java代码

089	packagecn.z_xiaofei168.dao;

090

091	importjava.util.List;

092

093	importcn.z_xiaofei168.domain.User;

094

095	publicinterfaceUserDao {

096

097	publicList<User> findByDarkName(String name)throwsException;

098

}

099

100

101

102

103

Java代码

104	packagecn.z_xiaofei168.dao;

105

106	importjava.util.List;

107

108	importorg.springframework.orm.hibernate3.support.HibernateDaoSupport;

109

110	importcn.z_xiaofei168.domain.User;

111

112	publicclassUserDaoImplextendsHibernateDaoSupportimplementsUserDao {

113

114	@SuppressWarnings("unchecked")

115	publicList<User> findByDarkName(String name)throwsException {

116

117	List list =this.getHibernateTemplate().find("from User where name like ?","%"+name+"%");

118	System.out.println("findByDarkName模糊："+list.size());

119	returnlist;

120

}

121

122

}

123

124

125	cn.z_xiaofei168.service包

126

127

128

129

Java代码

130	packagecn.z_xiaofei168.service;

131

132	importcn.z_xiaofei168.dao.UserDao;

133

134	publicinterfaceUserServiceextendsUserDao {

135

136

}

137

138

139

140

Java代码

141	packagecn.z_xiaofei168.service;

142

143	importjava.util.List;

144

145	importcn.z_xiaofei168.dao.UserDaoImpl;

146	importcn.z_xiaofei168.domain.User;

147

148	publicclassUserServiceImplimplementsUserService {

149

150	privateUserDaoImpl userDaoImpl;

151

152	publicUserDaoImpl getUserDaoImpl() {

153	returnuserDaoImpl;

154

}

155

156	/** set方法进行注入 */

157	publicvoidsetUserDaoImpl(UserDaoImpl userDaoImpl) {

158	this.userDaoImpl = userDaoImpl;

159

}

160

161	publicList<User> findByDarkName(String name)throwsException {

162	returnuserDaoImpl.findByDarkName(name);

163

}

164

165

}

struts.xml

01	<?xmlversion="1.0"encoding="UTF-8"?>

02	<!DOCTYPE struts PUBLIC

03	"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"

04	"http://struts.apache.org/dtds/struts-2.1.7.dtd">

05

<struts>

06	<packagename="z_xiaofei"extends="json-default"namespace="/csdn">

07	<global-results>

08	<resultname="input">/index.jsp</result>

09	</global-results>

10

11	<actionname="user_*"class="cn.z_xiaofei168.action.UserAction"method="{1}">

12

13	<!-- 返回的是一个user对象 user对象(id,name,pass) -->

14	<resultname="findByDarkName"type="json">

15	<!-- param参数的配置,includeProperties -->

16	<paramname="includeProperties">

17	list\[\d+\]\.id, list\[\d+\]\.name, list\[\d+\]\.pass

18

</param>

19

</result>

20

</action>

21	</package>

22

</struts>

jsp页面

01	<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

02

<%

03	String path = request.getContextPath();

04	String basePath = request.getScheme() + "://"

05	+ request.getServerName() + ":" + request.getServerPort()

06	+ path + "/";

07

%>

08

09	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

10

<html>

11

<head>

12	<basehref="<%=basePath%>">

13

14	<title>用户信息输入</title>

15

16	<metahttp-equiv="pragma"content="no-cache">

17	<metahttp-equiv="cache-control"content="no-cache">

18	<metahttp-equiv="expires"content="0">

19	<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

20	<metahttp-equiv="description"content="This is my page">

21

<!--

22	<link rel="stylesheet" type="text/css" href="styles.css">

23

-->

24	<scripttype="text/javascript"

25	src="${pageContext.request.contextPath}/js/jquery-1.6.js">

26

</script>

27	<scripttype="text/javascript">

28

29	function findByDarkName() {

30	var name = $("#darkName").val();

31

$.ajax({

32	type:"post",

33	url:"csdn/user_findByDarkName",

34	data:"user.name="+name,

35	dataType:"json",

36	success:function(data){

37	$.each(data.list,function(i,entity){

38	$("#darklist").append("<trstyle='border:1px'></tr>")

39	.append("<td>"+entity.id+"</td>")

40	.append("<td>"+entity.name+"</td>")

41	.append("<td>"+entity.pass+"</td>");

42

});

43

}

44

});

45

}

46

</script>

47

</head>

48

49

<body>

50

<br/>

51

<div>

52

<h2>

53	<fontcolor="red">模糊查询</font>

54

</h2>

55

<br/>

56

<h3>

模糊性:在给出的信息中，与之有相同的元素即可

01

</h3>

02

<br/>

03	<inputtype="text"id="darkName"name="user.name"/>

04	<spanid="msg"></span>

05	<inputtype="button"value="模糊查询"onclick="findByDarkName()"/>

06

</div>

07

08

<table>

09

<thead>

10

<tr>

11	<th>序号</th>

12	<th>名称</th>

13	<th>密码</th>

14	<th>注册日期</th>

15	<th>操作</th>

16

</tr>

17

</thead>

18	<tbodyid="darklist">

19

</tbody>

20

</table>

21

</body>

22

</html>

struts配置文件里有个type=json 并且文件继承了json-default,该文件在struts2-jon-plugin.jar里面定义了.里边定义了一个interceptor,会将action中提供了get set方法的属性封装成json格式数据response给客户端,