主に使用されるのは、 の multiple 属性です。 コードをコピーしますコードは次のとおりです。 🎜> 以下はページの詳細コードです: コードをコピーしますコードは次のとおりです: ; 解決策 4-5: 送信複数のファイル action="http://10.10.25.31:8080/ UploadPhotoServlet" ENCTYPE="multipart/form-data" METHOD="POST"> type="submit" value ="送信"> Java バックグラウンドの詳細コード: コードをコピーコードは次のとおりです: import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; /*** Servlet implementation class UploadPhotoServlet */ public class UploadPhotoServlet extends HttpServlet { private static final long serialVersionUID = 1L; /*** @see HttpServlet#HttpServlet() */ public UploadPhotoServlet() { super(); // TODO Auto-generated constructor stub } /*** @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doPost(request,response); } /*** @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ @SuppressWarnings("unchecked") protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String imagePath="c:\uploadFile\Image\" getEachDate() "\";//按日期生成文件夹 File uploadPath=new File(imagePath); if(!uploadPath.exists()){ uploadPath.mkdirs(); } File tmp=new File("c:\tmp\"); if(!tmp.exists()){ tmp.mkdirs(); } DiskFileItemFactory factory=new DiskFileItemFactory ();//创建磁盘工厂 factory.setRepository(tmp);//设置文件缓存路径 factory.setSizeThreshold(10 * 1096 );//将文件保存在内存还是磁盘临时文件夹的默认临界值,值为10240,即10kb ServletFileUpload sfu=new ServletFileUpload(factory);//创建处理工具 sfu.setSizeMax(10*1024*1024);//服务器端可以接收的最大文件大小,-1表示无上限 String fileName=null; try { List list=sfu.parseRequest(request);//解析 if(list.size()<1){ return; } for(int j=0;jFileItem item=list.get(j); fileName=item.getName(); if(fileName.equals("")){ request.getRequestDispatcher("/com/visualizerPhoto.jsp").forward(request, response); return; } int pos=fileName.lastIndexOf(".");//取图片文件格式 if(pos>0){ Date date=new Date(); fileName=imagePath date.getTime() fileName.substring(pos); } System.out.println("item:" item); item.write(new File(fileName));//写到磁盘 } } catch (FileUploadException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } // 13-11-15 public static String getEachDate() { Calendar cal = Calendar.getInstance(); cal.add(Calendar.DATE, 0); String yesterday = new SimpleDateFormat("yyyy-MM-dd ").format(cal .getTime()); String[] dates = yesterday.split("-"); String realDate = dates[0].substring(2, 4) "-" dates[1] "-" dates[2]; return realDate.trim(); } } 下面是效果图: