为Struts2的表单验证添加AJAX效果实例

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

<dwr>
<allow>
<create creator="new" javascript="validator">
<param name="class" value="org.apache.struts2.validators.DWRValidator"/>
</create>
<convert converter="bean" match="com.opensymphony.xwork2.ValidationAwareSupport"/>
</allow>

<signatures>
<![CDATA[
import java.util.Map;
import org.apache.struts2.validators.DWRValidator;

DWRValidator.doPost(String, String, Map<String, String>);
]]>
</signatures>
</dwr>

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