<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
1、配置struts.xml时Action中不配置namespace，默认namespace为 “ ”
struts.xml中
<package name="test" extends="struts-default" >
<action name="init_action" class="com.wei.action.LoginAction" method="init">
<result>/login.jsp</result>
</action>
</package>
jsp中
<form action="init_action.action" method="post">
用 户 名：<input type="text" name="user" value="" maxlength="20" size="20"><br>
密 码： <input type="password" name="pwd" value="" maxlength="20" size="20"><br>
确认密码：<input type="password" name="pwd" value="" maxlength="20"size="20"> <br>
<input type="submit" name="login" value="登录">
</form>
2、配置struts.xml时Action中配置namespace=“/test ”
struts.xml中
<package name="test" extends="struts-default" namespace=/test“”>
<action name="init_action" class="com.wei.action.LoginAction" method="init">
<result>/login.jsp</result>
</action>
</package>
jsp中
<form action="test/init_action.action" method="post">
用 户 名：<input type="text" name="user" value="" maxlength="20" size="20"><br>
密 码： <input type="password" name="pwd" value="" maxlength="20" size="20"><br>
确认密码：<input type="password" name="pwd" value="" maxlength="20"size="20"> <br>
<input type="submit" name="login" value="登录">
</form>
欢迎交流，评论！
配置struts时web.xml中<url-pattern>*.action</url-pattern>
原文：http://www.cnblogs.com/weishuai1/p/7352467.html