DWR在J2EE中基本配置

1. 工程中引入dwr.jar包
2. 在web.xml文件中添加以下内容
   <servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>

<init-param>
<param-name>config</param-name>
<param-value>WEB-INF/dwr.xml</param-value>
</init-param>

<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>scriptCompressed</param-name>
<param-value>false</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>

  <servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>

3.在WEB-INF文件夹中建立dwr.xml文件

   内容如下：
    <!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN" "http://www.getahead.ltd.uk/dwr/dwr10.dtd">

<dwr>

<init>

</init>

<allow>
    <!-- 从spring容器中取得id为 orderDwr 的bean-->
    <create creator="spring" javascript="OrderDwr" scope="application">
  <param name="beanName" value="orderDwr" />
    </create>

</allow>
</dwr>

4. 页面使用方法
   a. 引入相关js路径
      <script src="<c:url value='/dwr/engine.js'/>"></script>
<script src="<c:url value='/dwr/util.js'/>"></script>

        <!-- 自定义创建的名字 -->
<script src="<c:url value='/dwr/interface/OrderDwr.js'/>"></script>

   b. 使用方法
       <script type="text/javascript">
        function save(){
if(OrderDwr.isExistName($F('recordName'),function(data){
   if(data){
    alert("此名称已经存在!");
}else{
    var form=document.getElementById("dinnerRecordForm");     form.submit(); }
});
}
      </script>