基于JavaWeb的校园问卷调查系统.zip

package com.questionnaire.servlets; import java.io.File; import java.io.IOException; import java.nio.file.Files; import java.util.Iterator; import java.util.List; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; 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.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import com.questionnaire.bean.Gift; import com.questionnaire.dao.GiftDao; @WebServlet("/UpdateGiftByIdSubmitServlet") public class UpdateGiftByIdSubmitServlet extends HttpServlet { private static final long serialVersionUID = 1L; public UpdateGiftByIdSubmitServlet() { super(); // TODO Auto-generated constructor stub } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); /* Integer id =Integer.parseInt(request.getParameter("id")); Integer score =Integer.parseInt(request.getParameter("score")); String giftName = request.getParameter("giftName"); String giftDescription = request.getParameter("giftDescription"); String giftSrc = request.getParameter("giftSrc");*/ int id = -1 ; int score = -1; String giftName = null; String giftDescription = null; String giftSrc = null;//新图片名 //String oldPictureSrc = null;//旧图片名 String basePath ="F:\\代码\\JAVA7\\QuestionnaireDesign\\WebContent\\picture" ; Gift gif=new Gift(); GiftDao gDao=new GiftDao(); try { boolean isMultipart =ServletFileUpload.isMultipartContent(request); //System.out.println(ServletFileUpload.isMultipartContent(request)); if(isMultipart) { FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); //前端数据存在items中 List <FileItem> items= upload.parseRequest(request); Iterator <FileItem> iter= items.iterator(); while (iter.hasNext()) { FileItem item = iter.next(); // 信息为普通的格式 String itemName = item.getFieldName(); if (item.isFormField()) { if("id".equals(itemName)) {id=Integer.parseInt(item.getString("utf-8"));} else if("score".equals(itemName)) {score=Integer.parseInt(item.getString("utf-8"));} else if("giftName".equals(itemName)) {giftName=item.getString("utf-8");} else if("giftDescription".equals(itemName)) {giftDescription=item.getString("utf-8");} /*else if("oldPictureSrc".equals(itemName)) {oldPictureSrc=item.getString("utf-8");}*/ else { System.out.println("其他字段"); } } // 信息为文件格式 else { String fileName = item.getName(); if(fileName=="") { //System.out.println("未选择图片"); giftSrc="404.jpg"; } else{ giftSrc=fileName; //System.out.println(fileName); //System.out.println("File.separator:"+File.separator); //当前部署的tomcat路径 //String TomcatPath=request.getSession().getServletContext().getRealPath(File.separator); String TomcatPath=request.getSession().getServletContext().getRealPath("picture"); //System.out.println("TomcatPath:"+TomcatPath); //写入项目路径 File eclipseFile = new File(basePath, fileName); item.write(eclipseFile); File tomcatFile = new File(TomcatPath, fileName); //复制到Tomcat路径,若有重复文件则删除 if (tomcatFile.isFile() && tomcatFile.exists()) { tomcatFile.delete(); //System.out.println("删除重复文件"); } Files.copy(eclipseFile.toPath(), tomcatFile.toPath()); //写入Tomcat路径 //File tomcatFile = new File(TomcatPath, fileName); //item.write(tomcatFile); //deleteFile(basePath, oldPictureSrc);//删除旧图片 //逻辑有点复杂，不删了 } } } } gif.setId(id); gif.setScore(score); gif.setGiftName(giftName); gif.setGiftDescription(giftDescription); gif.setGiftSrc(giftSrc); gDao.UpdateGiftByIdSubmit(gif); response.sendRedirect("GiftManageServlet"); } catch (FileUploadException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); } //删除旧图片，但此程序没有使用 public boolean deleteFile(String basePath,String oldPictureSrc) { File file = new File(basePath+"\\"+oldPictureSrc); System.out.println("**********"); System.out.println(basePath+"\\"+oldPictureSrc); // 如果文件路径所对应的文件存在，并且是一个文件，则直接删除 if (file.exists() && file.isFile()) { if(oldPictureSrc!="404.jpg"){ if (file.delete()) { System.out.println("删除单个文件" + oldPictureSrc + "成功！"); return true; } else { System.out.println("删除单个文件" + oldPictureSrc + "失败！"); return false; } } return true; } else { System.out.println("删除单个文件失败：" + oldPictureSrc + "不存在！"); return false; } } }