private String uploadPic(HttpServletRequest request, HttpServletResponse response) throws Exception {
DiskFileItemFactory fac = new DiskFileItemFactory();
ServletFileUpload upload2 = new ServletFileUpload(fac);
upload2.setHeaderEncoding("utf-8");
List fileList = null;
fileList = upload2.parseRequest(request);
String number = ((FileItem)fileList.get(2)).getString(); //获取directory参数
确认参数固定后可以通过这种方式取到参数值后重新命名拿取

文档参考地址:https://www.cnblogs.com/kenkofox/archive/2011/03/26/1996258.html
本文介绍了一种使用ServletFileUpload组件处理HTTP请求中文件上传的方法。通过DiskFileItemFactory配置和解析请求来实现文件的上传功能,并获取特定参数进行后续操作。
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