Java中，当表单含有文件上传时，提交数据的如何读取（吐血版）

package cn.izis.servlet; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.util.Iterator; 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; import com.jspsmart.upload.SmartUpload; import com.jspsmart.upload.SmartUploadException; import cn.izis.entity.Members; import cn.izis.service.TeamMembersService; import cn.izis.service.impl.TeamMembersServiceImpl; public class UploadServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); response.setCharacterEncoding("utf-8"); request.setCharacterEncoding("UTF-8"); String insertDB = ""; String UserName = ""; String Birthday = ""; String IDCardNum = ""; String Phone = ""; String Level = ""; String Rusume = ""; String Summary = ""; String Role = ""; String Notes = ""; int TeamId = 0; // 用于存放输出的信息 String message = ""; // 在自己的项目中构造出一个用于存放用户照片的文件夹 String projectpath = this.getServletContext().getRealPath( "/headPhoto/"); // 如果此文件夹不存在，则构造此文件夹 File f = new File(projectpath); if (!f.exists()) { f.mkdir(); } // 构造出文件工厂，用于存放JSP页面中传递过来的文件 DiskFileItemFactory factory = new DiskFileItemFactory(); // 设置缓存大小，如果文件大于缓存大小时，则先把文件放到缓存中 factory.setSizeThreshold(4 * 1024); // 设置上传文件的保存路径 factory.setRepository(f); // 产生Servlet上传对象 ServletFileUpload upload = new ServletFileUpload(factory); // 设置可以上传文件大小的上界4MB upload.setSizeMax(4 * 1024 * 1024); try { // 取得所有上传文件的信息 List<FileItem> list = upload.parseRequest(request); Iterator<FileItem> iter = list.iterator(); while (iter.hasNext()) { FileItem item = iter.next(); // 如果接收到的参数不是一个普通表单(例text等)的元素，那么执行下面代码 if (!item.isFormField()) { String fieldName = item.getFieldName();// 获得此表单元素的name属性 String fileName = item.getName();// 获得文件的完整路径 // System.out.println("1.1:"+fileName); String contentType = item.getContentType();// 获得文件类型 long fileSize = item.getSize();// 获得文件大小 // 从文件的完整路径中截取出文件名 fileName = fileName.substring( fileName.lastIndexOf("\\") + 1, fileName.length()); // 判断是否有图片上传 if (!("".equals(fileName)) && !(fileName == null)) { // 如果上传的文件不是图片，那么不上传 String allImgExt = ".jpg|.jpeg|.gif|.bmp|.png|"; String extName = fileName.substring( fileName.indexOf("."), fileName.length()); if (allImgExt.indexOf(extName + "|") == -1) { message = "该文件类型不允许上传。请上传 " + allImgExt + " 类型的文件，当前文件类型为" + extName; break; } String filepath = projectpath + "\\" + fieldName; File uf = new File(filepath); // 更改文件的保存路径，以防止文件重名的现象出现 if (!uf.exists()) { uf.mkdir(); } // 此输出路径为保存到数据库中photo字段的路径 insertDB = "headPhoto/" + fieldName + "/" + fileName; // System.out.println("文件路径："+insertDB+":"+insertDB.length()); File uploadedFile = new File(filepath, fileName); try { // 如果在该文件夹中已经有相同的文件，那么将其删除之后再重新创建（只适用于上传一张照片的情况） if (uploadedFile.exists()) { uploadedFile.delete(); } item.write(uploadedFile); /**********/ TeamMembersService teamMembersService = new TeamMembersServiceImpl(); if (teamMembersService.updatePhoto(insertDB) != 0) { message = "上传文件成功<br/><br/>基本信息如下：<br/>文件名：" + fileName + "<br/>文件类型：" + contentType + "<br/>文件大小：" + fileSize; } } catch (Exception e) { e.printStackTrace(); // return ; } } else { // 取得普通的对象（对于像文本框这种类型的使用） // 对于普通类型的对象暂不做处理 // return ; } } else { String name = item.getFieldName(); String value = item.getString(); value = new String(value.getBytes("ISO-8859-1"), "UTF-8"); switch (name) { case "UserName": UserName = value; break; case "Birthday": Birthday = value; break; case "IDCardNum": IDCardNum = value; break; case "Phone": Phone = value; break; case "Level": Level = value; break; case "Rusume": Rusume = value; break; case "Role": Role = value; break; case "Notes": Notes = value; break; case "Summary": Summary = value; break; case "TeamId": TeamId = Integer.parseInt(value.toString()); break; default: break; } } } } catch (FileUploadException e) { // TODO Auto-generated catch block message = "文件的内容过大，请上传小于4MB的文件"; e.printStackTrace(); } int res = 0; Members members = new Members(); members.setUserName(UserName); members.setBirthday(Birthday); members.setIDCardNum(IDCardNum); members.setPhone(Phone); members.setLevel(Level); members.setRusume(Rusume); members.setSummary(Summary); members.setRole(Role); members.setNotes(Notes); members.setTeamId(TeamId); members.setPhoto(insertDB); TeamMembersService teamMembersService; try { teamMembersService = new TeamMembersServiceImpl(); res = teamMembersService.addMembers(members); if (res != 0) { // request.setAttribute("info", "添加成功"); // ../../GoManagerPlat/RelayTeamMemberServlet?showPage=1&keyword=<%=a // %> response.sendRedirect("/GoManagerPlat/RelayTeamMemberServlet?showPage=1&keyword="); // out.println("<script>alert('修改成功！');window.history.go(-2)</script>"); // request.getRequestDispatcher(request.getHeader("referer")).forward(request,response); // request.getRequestDispatcher("/Ok").forward(request, // response); } else { request.setAttribute("info", "添加失败"); request.getRequestDispatcher("/Error").forward(request, response); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throw