DWR+SPRING整合
1、将dwr.jar放到应用的/WEB-INF/lib目录下2、配置web.xml,增加如下代码:Java代码 <!--初始化WebApplicationContext--> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/applicationContext.xml,/WEB-INF/action-servlet.xml</param-value> </context-param> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <!--配置DWR拦截器--> <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> 3、增中dwr.xml文件文件内容：Java代码 <?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="DWRUser"> <param name="beanName" value="DWRUser"/> </create> </allow> </dwr> creator属性的值可以是new,struts,spring......因为此处是整合spring来做的，所以设置成“spring”，javascript="DWRUser" 表示实例转换成javascript语言后以DWRUser命名，前台页面可以通过代码（<script type='text/javascript' src='../../dwr/interface/DWRUser.js'></script>）来调用。param元素的name属性值可以是class,beanName等，此处用beanName,value得值是定义在applicationContext.xml中某个bean的id值。4、创建一个实体bean供DWR转换成jsJava代码 package com.note.dwr; import com.note.bussies.service.IUserService; public class User { private IUserService ius; public IUserService getIus() { return ius; } public void setIus(IUserService ius) { this.ius = ius; } public User(){ } public boolean isExist(String username) { Users user = this.ius.getUserByName(username); return (null == user) ? false : true; } } 5、在applicationContext.xml中配置第4步写的beanJava代码 ...... <bean id="DWRUser" /> </property> </bean> ...... 6、在视图页面中调用先导入以下文，每个文件的功能这里不再详述Java代码 <script type='text/javascript' src='../../dwr/interface/DWRUser.js'></script> <script type='text/javascript' src='../../dwr/engine.js'></script> <script type='text/javascript' src='../../dwr/util.js'></script> 因为我的视图文件是放在/view/user/下，所以这里用了../../返回到根具体调用：Java代码 <script type='text/javascript'> function regUserChked(){ var username=$("username").value; DWRUser.isExist(username,showData);//showData回调函数 } function showData(data){ if(data){ DWRUtil.setValue("userMsg","该用户名已经被注册，请更换您的用户名！"); }else{ DWRUtil.setValue("userMsg","恭喜您，该用户名尚未被注册！"); } } </script> lt;input type="text" name="username" value="" onblur="regUserChked()" /><div id="userMsg"></div>