问题描述
我有一个 Action 类,它使用 addActionMessage(); 发送动作消息.
I have one Action class which is sending an action message using addActionMessage();.
我想使用 JavaScript 警告框在我的 JSP 中显示该消息.
I want to display that message in my JSP using a JavaScript alert box.
我试过了
alert ('<s:actionmessage/>');
但它显示的是未终止的字符串文字.
推荐答案
<s:actionmessage/> 标签 生成 HTML,如下所示:
<ul class="actionMessage"> <li> <span> Your Message 1 </span> </li> <li> <span> Your Message 2, and so on... </span> </li> </ul>
这将使用无效的 JS 代码破坏您的 javascript 函数:
This will break your javascript function with invalid JS code:
alert('<ul class="actionMessage"> <li> ... ');
解决方案是手动迭代您的消息,并自己构建输出,使用 <s:property/>,而不是使用 <s:actionmessage/>:
The solution is to manually iterate over your messages, and build the output by yourself, with <s:property/>, instead of using <s:actionmessage/>:
<s:if test="actionMessages!=null && actionMessages.size > 0"> <script> var actionMessages; <s:iterator value="actionMessages" > // Iterate the messages, and build the JS String actionMessages += '-' + '<s:property />' + ' '; </s:iterator> alert (actionMessages); </script> </s:if>
还记得将 actionMessages 中的单引号括起来.
Also remember to wrap the single quotes from your actionMessages.