1.配置web.xml文件，通知控制器：
<!-----------------这个是默认的-------------------------->
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
<!-----------------这个是添加模块的-------------------------->

<init-param>
      <param-name>config/Add</param-name>
      <param-value>/WEB-INF/struts-config_Add.xml</param-value>
    </init-param>
<!-----------------这个是删除模块的-------------------------->

<init-param>
      <param-name>config/Del</param-name>
      <param-value>/WEB-INF/struts-config_Del.xml</param-value>
    </init-param>
注释：Del和Add是模块的名字

2.配置每个struts-config.xml文件
a）struts-config.xml

<struts-config>
  <data-sources />
  <form-beans>
  <form-bean name="login" type="org.apache.struts.validator.DynaValidatorForm">
  </form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
 
 <action path="/login"
 type="del.Login" 
 name="login"    
 scope="request">    
 <forward name="success" contextRelative="true" path="/login.jsp"/>
 </action>
 
 </action-mappings>
 
</struts-config>

b)struts-config_Add.xml文件
<struts-config>
  <data-sources />
  <form-beans>
  <form-bean name="add" type="org.apache.struts.validator.DynaValidatorForm">
  </form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
 
 <action path="/Add/A"
 type="del.Add" 
 name="add"    
 scope="request">    
 <forward name="success" contextRelative="true" path="/Add/A.jsp"/>
 </action>
 
  </action-mappings>
b)struts-config_Del.xml文件
<struts-config>
  <data-sources />
  <form-beans>
   
     <form-bean name="del" type="org.apache.struts.validator.DynaValidatorForm">
      </form-bean>
     
  </form-beans>
 <global-exceptions />
  <global-forwards/>
  <action-mappings>
 
 <action path="/Del/D"
 type="del.Del" 
 name="del"    
 scope="request">    
 <forward name="success" contextRelative="true" path="/D.jsp"/>
 </action> 
 </action-mappings>
  </struts-config>
</struts-config>
3.测试
描述：我现在的Del模块下的MyJsp.jsp文件李想做如下操作：
a）.本模块之间的跳转，跳到到D.jsp
代码如下：
MyJsp.jsp：
<form action="/Del/D.do">
          
            <table>
             <tr>
                <td >
                 这是del-->del本模块之间跳转：<button type="submit"  on="image/active_login.png" off="image/inactive_login.png"></button>
                 
                </td>
              </tr>
            </table>
    </form>
del.Del.java:
public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest arg2, HttpServletResponse arg3) throws Exception {
  // TODO Auto-generated method stub
  return arg0.findForward("success");
  
 }
b)不同模块之间跳转Del--->Add,跳到：Add/A.jsp
MyJsp.jsp:
<form action="/Add/A.do">
          
            <table>
             <tr>
                <td >
                 这是del--->add不同模块之间跳转：<button type="submit"  on="image/active_login.png" off="image/inactive_login.png"></button>
                 
                </td>
              </tr>
            </table>
    </form>
Add.java

public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest arg2, HttpServletResponse arg3) throws Exception {
  // TODO Auto-generated method stub
  return arg0.findForward("success");
 }
c)跳转到默认，如果你已经处在其他模块，需要转回到缺省模块
MyJsp.jsp
<form action="/login.do">
          
            <table>
             <tr>
                <td >
                 这是del--->login默认模块之间跳转：<button type="submit"  on="image/active_login.png" off="image/inactive_login.png"></button>
                 
                </td>
              </tr>
            </table>
    </form>

Login.java

public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest arg2, HttpServletResponse arg3) throws Exception {
  // TODO Auto-generated method stub
  return arg0.findForward("success");
 }
4.结果：出现404错误，如下：
The requested resource (/Del/D.do) is not available等，请教高手啊！