個人筆記：

struts-config.xml

<global-exceptions>
   <exception key="test.message"
       type="test.lxy.excption.MessageException"
       path="/WEB-INF/jsp/error.jsp">
   </exception>
</global-exceptions>

......

<message-resources parameter="message"/>

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寫好國際化資源文件message.properites等。

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public class MessageException extends Exception {

public MessageException() {
  
}

public MessageException(String msg) {
   super(msg);
}

}

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      <logic:messagesPresent>
       <html:messages id="exception">
        <bean:write name="exception"/>
       </html:messages>
      </logic:messagesPresent>