1: Prepare the front page Upload.html
Form action=Upload file Backend interface method=”post” enctype=”multipart/form-data”, file Input box
<form action="/upload" method="post" enctype="multipart/form-data"> <input type="file" name="files"> <input type="submit" value="上传"> </form>
2: Add the corresponding jar package
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // 配置上传参数 DiskFileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); // 解析请求的内容提取文件数据 @SuppressWarnings("unchecked") List<FileItem> formItems = upload.parseRequest(request); // 迭代表单数据 for (FileItem item : formItems) { // 处理不在表单中的字段 if (!item.isFormField()) { String fileName = item.getName(); //定义上传文件的存放路径 String path = request.getServletContext().getRealPath("/uploadFiles"); //定义上传文件的完整路径 String filePath = String.format("%s/%s",path,fileName); File storeFile = new File(filePath); // 在控制台输出文件的上传路径 System.out.println(filePath); // 保存文件到硬盘 item.write(storeFile); } } } catch (Exception ex) { } }Five: Prepare for storage The directory of the uploaded file must be consistent with the path in the above code Done! Recommended tutorial:
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