开发环境：eclipse3.1.2 myeclipse4.1.1 Tomcat5.0.28 Mysql5.0
dwr类包版本是1.1
步骤一：配置web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>EncodingFilter</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>
</filter>
<filter-mapping>
<filter-name>EncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<error-page>
<error-code>404</error-code>
<location>/404.jsp</location>
</error-page>
<error-page>
<error-code>500</error-code>
<location>/500.jsp</location>
</error-page>
<taglib>
<taglib-uri>/WEB-INF/struts-bean</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-logic</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-html</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-tiles</taglib-uri>
<taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/ntu</taglib-uri>
<taglib-location>/WEB-INF/tld/ntu.tld</taglib-location>
</taglib>
</web-app>
二：spring中注入相关service
<bean id="ajaxTestService" class="com.lion.cms.domain.service.AjaxTestServiceImp">
<property name="commonDAO">
<ref bean="commonDAO" />
</property>
</bean>
三:AjaxTestServiceImp代码
public class AjaxTestServiceImp implements IAjaxTestService {
private ICommonDAO commonDAO;
public void setCommonDAO(ICommonDAO commonDAO) {
this.commonDAO = commonDAO;
}
public List getEmployeeById(String deptid) {
DetachedCriteria detachedCriteria=DetachedCriteria.forClass(Employee.class);
detachedCriteria.setFetchMode(Employee.PROP_DEPTID,FetchMode.JOIN);
detachedCriteria.add(Restrictions.eq(Employee.PROP_DEPTID+".id",deptid));
List result=commonDAO.findByCriteria(detachedCriteria);
return result;
}
}
四：dwr.xml配置
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN" "http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
<allow>
<create creator="spring" javascript="ajaxTestService">
<param name="beanName" value="ajaxTestService" />
<include method="getEmployeeById" />
</create>
<convert converter="bean" match="com.lion.cms.domain.pojo.Employee" />
<param name="exclude" value="com.lion.cms.domain.pojo.Dept"/>
</allow>
</dwr>
五：jsp页面
<html:select styleId="deptid" property="deptid" onchange="loadEmployList(this.value)">
<html:optionsCollection name="deptlist" label="deptname" value="id"/>
</html:select>
<html:select property="employee" styleId="employee">
<html:option value="" >请选择</html:option>
</html:select>
<script type="text/javascript">
<!--
// 加载employee下拉列表。
function loadEmployList(deptid){
if(deptid==null||deptid==''){
clearEmployeeSel();
return;
}
ajaxTestService.getEmployeeById(loadEmployListCallback,deptid);
}
var loadEmployListCallback=function(items){
clearEmployeeSel();
DWRUtil.addOptions("employee",items,"id","truename");
}
function clearEmployeeSel(){
DWRUtil.removeAllOptions("employee");
DWRUtil.addOptions("employee",[{label:'请选择',value:''}],"value","label");
}
//-->
</script>
职工和部门是多对一关系，例子简单，不详细叙述了
dwr中spring和hibernate的配置相关帮助文档：
http://getahead.ltd.uk/dwr/server/spring
http://getahead.ltd.uk/dwr/server/hibernate
dept.hbm.xml代码如下：
<hibernate-mapping package="com.lion.cms.domain.pojo">
<class
name="Dept"
table="dept"
>
<meta attribute="sync-DAO">false</meta>
<id
name="id"
type="string"
column="id"
>
<generator class="uuid.hex"/>
</id>
<property
name="deptname"
column="deptname"
type="string"
not-null="true"
length="12"
/>
<property
name="creattime"
column="creattime"
type="java.lang.Long"
not-null="false"
length="20"
/>
</class>
</hibernate-mapping>
employee.hbm.xml代码如下：
<hibernate-mapping package="com.lion.cms.domain.pojo">
<class
name="Employee"
table="employee"
>
<meta attribute="sync-DAO">false</meta>
<id
name="id"
type="string"
column="Id"
>
<generator class="uuid.hex"/>
</id>
<property
name="username"
column="username"
type="string"
not-null="true"
length="20"
/>
<property
name="password"
column="password"
type="string"
not-null="false"
length="20"
/>
<property
name="truename"
column="truename"
type="string"
not-null="false"
length="11"
/>
<property
name="sex"
column="sex"
type="string"
not-null="false"
length="2"
/>
<property
name="intro"
column="intro"
type="string"
not-null="false"
/>
<many-to-one
name="deptid"
column="deptid"
class="Dept"
not-null="true"
>
</many-to-one>
</class>
</hibernate-mapping>
用hibernate同步插件可以快速生成po