public class uploadservlet extends HttpServlet { @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { // System.out.println("文件传发来"); // ServletInputStream inputStream=req.getInputStream(); // byte[] buffrt=new byte[1024000]; // int read = inputStream.read(buffrt); // System.out.println(new String(buffrt,0,read)); //(只有是多段数据才是文件上传) if(ServletFileUpload.isMultipartContent(req)) { //创建工厂实现类 FileItemFactory fileItemFactory=new DiskFileItemFactory(); //创建用于解析上传数据的工具类 ServletFileUpload servletFileUpload=new ServletFileUpload(fileItemFactory); try { //解析上传的数据,得到每一个表单项 List<FileItem> list=servletFileUpload.parseRequest(req); for(FileItem fileItem :list) { if(fileItem.isFormField()) { System.out.println("表单项的name属性值"+ fileItem.getName()); System.out.println("表单项的value的属性值"+ fileItem.getString("UTF-8")); } else { System.out.println("表单项的name属性值"+ fileItem.getFieldName()); System.out.println("上传的文件名"+fileItem.getName()); fileItem.write(new File("D:\\"+fileItem.getName())); } } } catch (FileUploadException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } } }