Strut2 custom file upload error message

During file upload, we can specify the Interceptor to set the file type, extension name, and size. The configuration in the action is as follows:

<Interceptor-ref name = "fileupload">
<Param name = "maximumsize"> 500000 </param>
<Param name = "allowedtypes"> application/vnd. MS-Excel </param>
<Param name = "allowedextensionsset"> XLS </param>
</Interceptor-ref>

If the uploaded file does not conform to the definition, it will be switched to the input view. Obtain the error message <s: fielderror> </S: fielderror> on the page.

If you need to define your own prompt information, you can set the international configuration information and add it to the Struts. xml file? :

<Constant name = "struts. Custom. i18n. Resources" value = "message"> </constant>

Message indicates the attribute configuration file starting with message. The Chinese file name is message_zh_cn.properties.

You can customize the error message in message_zh_cn.properties:

Struts. Messages. Error. Uploading = \ u4e0a \ u4f20 \ u9519 \ u8bef
Struts. Messages. Error. file. Too. Large = \ u6587 \ u4ef6 \ u592a \ u5927
Struts. Messages. Error. content. type. Not. Allowed = \ u8bf7 \ u9009 \ u62e9excel \ u6587 \ u4ef6
Struts. Messages. Error. file. extension. Not. Allowed = \ u8bf7 \ u9009 \ u62e9.xls \ u7ed3 \ u5c3e \ u7684 \ u6587 \ u4ef6