问题
I there,
I have a multipart form that upload file and in struts.xml I was able to change the max size:
<constant name="struts.multipart.maxSize" value="10485760"/>
but I can't change the default error message when the request is bigger than allowed.
I've tried add struts.messages.error.file.too.large=Too Large! but I am always getting the same message:
the request was rejected because its size (31720350) exceeds the configured maximum (10485760)
回答1:
The message is coming from commons-fileupload framework which is default implementation of file uploading feature of the Struts2 framework. Struts2 also uses JakartaMultipartRequest to parse request. Even if you can change this class via configuration, you shouldn't do that. At the first look it seems to handle all exceptions thrown by underlying framework. For example you can change the value of the key
struts.messages.upload.error.SizeLimitExceededException=your message
来源：https://stackoverflow.com/questions/24434579/change-default-error-message-for-upload-files-on-struts-2