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No configuration found for the specified action: 'helloworld.action' in namespac

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今天首次使用Struts2，配置一切正常，使用常用tag也正常，但是在使用<s:form>标记时，发现控制台总是输出警告信息，

警告信息内容如下：

警告: No configuration found for the specified action: 'ShowMessage' in namespace: ''. Form action defaulting to 'action' attribute's literal value.
2008-9-6 11:35:47 org.apache.struts2.components.Form evaluateExtraParamsServletRequest
警告: No configuration found for the specified action: 'ShowMessage' in namespace: ''. Form action defaulting to 'action' attribute's literal value.

 

解决办法很简单：出现错误的原因是：提交表单中action用的是ShowMessage.action  只有表单的action设置为ShowMessae就行了，Struts2会默认追加.action

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