声名式异常处理
新建一个登录页面：
?配置struts.xml?定义两个异常类：<result name="error">/error.jsp</result>全局异常处理：<global-exception-mapping><exception-mapping result="error" exception="java.lang.Exception"></global-exception-mapping>
?
配置struts.xml
?定义两个异常类：<result name="error">/error.jsp</result>全局异常处理：<global-exception-mapping><exception-mapping result="error" exception="java.lang.Exception"></global-exception-mapping>
?定义两个异常类：
<result name="error">/error.jsp</result>全局异常处理：<global-exception-mapping><exception-mapping result="error" exception="java.lang.Exception"></global-exception-mapping>
<result name="error">/error.jsp</result>
全局异常处理：
<global-exception-mapping>
<exception-mapping result="error" exception="java.lang.Exception">
</global-exception-mapping>
