Question

myeclipse8.0+struts2.1.6配置dwr

这个问题困扰了我两天了，查了很多资料，头都大了，还是没有解决……配置如下：
1.导入 dwr-1.1.1.jar struts-dojo-plugins-2.1.6.jar
2web.xml:
<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>

<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>1</load-on-startup>
</servlet>

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

<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
3dwr.xml
<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>
4.jsp
<%@ taglib prefix="sd" uri="/struts-dojo-tags"%>
<s:head theme="xhtml"/>
<sd:head parseContent="true"/>
已经没有问题，关键是没有实时更新！
不能够在同一个页面显示……会跳转

Answer 1

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

<servlet-mapping>
<servlet-name>dwr-invoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
3dwr.xml

为什么要写两次?