Spring+hibernate+DWR整合

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DWR的配置：
第一步：导入dwr.jar包
第二步：配置web.xml文件加入DWR的servlet配置，在web.xml中加入这句代码
<servlet>
<servlet-name>dwr</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>dwr</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>

第三步在WEB-INF下创建一个名为dwr.xml的文件，内容：

<?xml version="1.0" encoding="UTF-8"?>
<dwr>
<allow>
<create javascript="别名" creator="spring">
<param name="beanName" value="你要在jsp页面中调用的java类的类名"></param>
</create>
<convert match="java类返回的对象（如果只是String，则这个标签可以不使用）" converter="hibernate3"></convert>

</allow>
</dwr>

第四步：在jsp页面使用时先引入几个js
<script type="text/javascript" src="dwr/engine.js"></script>
<script type="text/javascript" src="dwr/util.js"></script>
<script type="text/javascript" src="dwr/interface/dwrxml中的别名.js"></script>

案例代码：这是一个地区选择后便会出现该地区的街道的案例！
java后台：
package dao; import java.util.List; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import pojo.TblQx; public class SelectDAO extends HibernateDaoSupport{ public List selectQxList(){ return getHibernateTemplate().find("from TblQx"); } public List selectJdList(int qxid){ return getHibernateTemplate().find("from TblJd j where j.tblQx.qxid=?",qxid); } } applicationContext.xml：
<?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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean id="user" class="dao.SelectDAO"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.microsoft.sqlserver.jdbc.SQLServerDriver"> </property> <property name="url" value="jdbc:sqlserver://127.0.0.1:1433;databaseName=test"> </property> <property name="username" value="sa"></property> <property name="password" value="123"></property> </bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref bean="dataSource" /> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect"> org.hibernate.dialect.SQLServerDialect </prop> </props> </property> <property name="mappingResources"> <list> <value>pojo/TblQx.hbm.xml</value> <value>pojo/TblJd.hbm.xml</value> <value>pojo/Users.hbm.xml</value></list> </property></bean></beans>dwr配置：
<?xml version="1.0" encoding="UTF-8"?> <dwr> <allow> <create javascript="selectService" creator="spring"> <param name="beanName" value="user"></param> </create> <convert match="pojo.TblJd" converter="hibernate3"></convert> <convert match="pojo.TblQx" converter="hibernate3"></convert> </allow> </dwr>

Jsp：
<%@ 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>My JSP 'index.jsp' starting page</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"> <script type="text/javascript" src="dwr/engine.js"></script> <script type="text/javascript" src="dwr/util.js"></script> <script type="text/javascript" src="dwr/interface/selectService.js"></script> <script type="text/javascript"> function myload(){ selectService.selectQxList(function(data){ var q=document.getElementById("qx"); for(i=0;i<data.length;i++){ q.options[i]=new Option(data[i].qx,data[i].qxid); } }); } function changeJd(qxid){ selectService.selectJdList(qxid,function(data){ DWRUtil.addOptions($("jd"),data,"jdid","jd"); }); } </script> </head> <body onload="myload()"> 区县： <select id="qx" onchange="changeJd(this.value)"></select>街道<select id="jd"></select> </body> </html>