struts2.xml中使用chain和redirectAction这两个注意事项

当在struts.xml中使用chain和redirectAction这两个类型结果的时候，会报检查错误！

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<wbr><wbr><wbr> - Undefined actionnamespace<br><wbr><wbr><wbr><wbr> parameter<br><wbr><wbr><wbr> - Undefined actionName parameter<br><br> 相信不少朋友会被这个错误折腾的很难受吧，现在说下解决方案，在百度和google上搜了很久，国外网站也看了下，半天都没找到解决方法，后来无意中在apache的网站上看到了struts2 chain的使用说明，仔细读了一下，就想到了一个办法，或许可以解决，于是就测试了一下，发现问题完全解决了，现在来说下一我的解决方法。<br><br> chain结果类型有4个属性，分别是：<br><br><wbr><wbr><wbr> actionName (default) - the name of the action that will be chained to<br><br><wbr><wbr><wbr> namespace - used to determine which namespace the Action is in that we're chaining. If namespace is null, this defaults to the current namespace<br><br><wbr><wbr><wbr> method - used to specify another method on target action to be invoked. If null, this defaults to execute method<br><br><wbr><wbr><wbr> skipActions - (optional) the list of comma separated action names for the actions that could be chained to<br><br> 其中actionName和namespace是必不可少的，否则就会报错。所以我在项目中就写成如下形式：<br> &lt;package name="struts" extends="struts-default" namespace="/bg"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr> &lt;action name="login" class="loginAction"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;result type="chain"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;param name="actionName"&gt;index&lt;/param&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;param name="namespace"&gt;/bg&lt;/param&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;/result&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;/action&gt;<br> &lt;/package&gt;<br><br> 但是这么写就有一个问题，我的项目比较简单，不想使用命名空间，于是我就想怎么解决这个问题呢，在看官方文档的时候我发现这么一句话：<br> A root namespace ("/") is also supported. The root is the namespace when a request directly under the context path is received. As with other namespaces, it will fall back to the default ("") namespace if a local action is not found.<br><br> 于是我就想，用"/"代替"/bg"不就可以解决问题了么。然后就把代码写成如下形式<br> &lt;package name="struts" extends="struts-default" namespace="/"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr> &lt;action name="login" class="loginAction"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;result type="chain"&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;param name="actionName"&gt;index&lt;/param&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;param name="namespace"&gt;/&lt;/param&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;/result&gt;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr> &lt;/action&gt;<br> &lt;/package&gt;<br><br> 好了说到这里我想大家也都明白了该怎么解决chain和redirectAction这两个类型结果（type-result）报检查错误（validation）的问题了吧！<br> 有多的不对的地方还请大家多多指教！！ </wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>