Java file upload and download
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Java
Two core packages should be introduced for file upload
commons-fileupload-1.2. 1.jar
commons-io-1.4. jar
The following is a simple encapsulation of some code for file upload and download, which can be used directly in the future [when using, the encapsulated jar package can be directly imported into the project]
Upload file core code
Download File core code
Note: when uploading files, the foreground form must have the following attributes: enctype = "multipart / form data"
Attach the source code + exported jar package + use Demo: download the file
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