用java实现文件下载，通过使用用该类可以下载不同类型的文件。-with java download files through the use of such use can be downloaded for different types of documents.

此资料介绍了如何实现java文件上传和下载。里面有demo和视频。大家可以-This information on how to upload files java. There are demo and video. We will look at the