浅谈struts2、jquery与json的集成-优快云博客

本文介绍如何将struts2、jquery与json集成以实现异步交互，并提供了一个综合的小案例来演示这一过程。案例前提包括引入必要的jar包，如struts2-core、xwork、ognl等，以及自定义的domain类和action类。

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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

package cn.z_xiaofei168.domain;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable {

	/**
	 * @author z_xiaofei168
	 */
	private static final long serialVersionUID = 1L;

	/** 用户的编号 */
	private Integer id;
	/** 用户的名称 */
	private String name;
	/** 用户的密码 */
	private String pass;
	/** 用户的邮箱 */
	private String email;
	/** 用户的注册日期 */
	private Date rdate;

	public User() {
		super();
	}
	
	//以下省略所以的set和get方法
}

cn.z_xiaofei168.action包

package cn.z_xiaofei168.action;

import java.util.List;

import cn.z_xiaofei168.dao.Pagination;
import cn.z_xiaofei168.domain.User;
import cn.z_xiaofei168.service.UserServiceImpl;

import com.opensymphony.xwork2.ActionSupport;

public class UserAction extends ActionSupport {

	/**
	 * @author z_xiaofei168
	 */
	private static final long serialVersionUID = 1L;

	/** 业务层对象 */
	private UserServiceImpl userServiceImpl;
	private List<User> list;

	public UserServiceImpl getUserServiceImpl() {
		return userServiceImpl;
	}

	/** set方法注入 */
	public void setUserServiceImpl(UserServiceImpl userServiceImpl) {
		this.userServiceImpl = userServiceImpl;
	}

	public List<User> getList() {
		return list;
	}

	public void setList(List<User> list) {
		this.list = list;
	}
	
	/** 模糊查新的方法 */
	public String findByDarkName() throws Exception{
		list = userServiceImpl.findByDarkName(user.getName());
		return "findByDarkName";
	}
}

cn.z_xiaofei168.dao包

package cn.z_xiaofei168.dao;

import java.util.List;

import cn.z_xiaofei168.domain.User;

public interface UserDao {
	
	public List<User> findByDarkName(String name) throws Exception;
}

package cn.z_xiaofei168.dao;

import java.util.List;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import cn.z_xiaofei168.domain.User;

public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

	@SuppressWarnings("unchecked")
	public List<User> findByDarkName(String name) throws Exception {
	
		List list = this.getHibernateTemplate().find("from User where name like ?","%"+name+"%");
		System.out.println("findByDarkName模糊："+list.size());
		return list;
	}
	
}

cn.z_xiaofei168.service包

package cn.z_xiaofei168.service;

import cn.z_xiaofei168.dao.UserDao;

public interface UserService extends UserDao {

}

package cn.z_xiaofei168.service;

import java.util.List;

import cn.z_xiaofei168.dao.UserDaoImpl;
import cn.z_xiaofei168.domain.User;

public class UserServiceImpl implements UserService {

	private UserDaoImpl userDaoImpl;

	public UserDaoImpl getUserDaoImpl() {
		return userDaoImpl;
	}

	/** set方法进行注入 */
	public void setUserDaoImpl(UserDaoImpl userDaoImpl) {
		this.userDaoImpl = userDaoImpl;
	}
	
	public List<User> findByDarkName(String name) throws Exception {
		return userDaoImpl.findByDarkName(name);
	}

}

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
 <!DOCTYPE struts PUBLIC
	"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
	"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
	<package name="z_xiaofei" extends="json-default" namespace="/csdn">
		<global-results>
			<result name="input">/index.jsp</result>
		</global-results>
		
		<action name="user_*" class="cn.z_xiaofei168.action.UserAction" method="{1}">
			
			<!-- 返回的是一个user对象 user对象(id,name,pass) -->
			<result name="findByDarkName" type="json">
				<!-- param参数的配置,includeProperties -->
				<param name="includeProperties">
					list\[\d+\]\.id, list\[\d+\]\.name, list\[\d+\]\.pass
			 </param>
			</result>
		</action>
	</package>
</struts>

jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<base href="<%=basePath%>">

		<title>用户信息输入</title>

		<meta http-equiv="pragma" content="no-cache">
		<meta http-equiv="cache-control" content="no-cache">
		<meta http-equiv="expires" content="0">
		<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
		<meta http-equiv="description" content="This is my page">
		<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
		<script type="text/javascript"
			src="${pageContext.request.contextPath}/js/jquery-1.6.js">
</script>
		<script type="text/javascript">

function findByDarkName() {
	var name = $("#darkName").val();
	$.ajax({
		type:"post",
		url:"csdn/user_findByDarkName",
		data:"user.name="+name,
		dataType:"json",
		success:function(data){
			$.each(data.list,function(i,entity){
				$("#darklist").append("<tr style='border:1px'></tr>")
				.append("<td>"+entity.id+"</td>")
				.append("<td>"+entity.name+"</td>")
				.append("<td>"+entity.pass+"</td>");
			});
		}
	});
}
</script>
	</head>

	<body>
		<br />
		<div>
			<h2>
				<font color="red">模糊查询</font>
			</h2>
			<br />
			<h3>
				模糊性:在给出的信息中，与之有相同的元素即可
			</h3>
			<br />
			<input type="text" id="darkName" name="user.name" />
			<span id="msg"></span>
			<input type="button" value="模糊查询" οnclick="findByDarkName()" />
		</div>

		<table>
			<thead>
				<tr>
					<th>序号</th>
					<th>名称</th>
					<th>密码</th>
					<th>注册日期</th>
					<th>操作</th>
				</tr>
			</thead>
			<tbody id="darklist">
			</tbody>
		</table>
	</body>
</html>