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package web.servlet.file;
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import domain.Admin;
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import domain.Photo;
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import domain.Student;
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import domain.Teacher;
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import org.apache.commons.fileupload.FileItem;
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import org.apache.commons.fileupload.FileUploadException;
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import org.apache.commons.fileupload.disk.DiskFileItemFactory;
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import org.apache.commons.fileupload.servlet.ServletFileUpload;
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import service.PhotoService;
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import service.impl.PhotoServiceImpl;
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import javax.servlet.ServletException;
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import javax.servlet.annotation.WebServlet;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import javax.servlet.http.HttpSession;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.Date;
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import java.util.List;
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@WebServlet("/uploadImageServlet")
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public class UploadImageServlet extends HttpServlet {
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// 处理POST请求
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// 获取当前会话
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HttpSession session = request.getSession();
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// 获取当前会话中的学生对象
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Student student = (Student) session.getAttribute("student");
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// 获取当前会话中的教师对象
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Teacher teacher = (Teacher) session.getAttribute("teacher");
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// 获取当前会话中的管理员对象
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Admin admin = (Admin) session.getAttribute("admin");
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// 定义一个字符串变量，用于存储用户ID
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String id = "";
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// 如果当前会话中有学生对象
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if (student != null) {
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// 将学生ID赋值给id变量
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id = student.getS_id();
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}
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request.setAttribute("message", "");
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request.setAttribute("path", "");
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String filename = null;
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String newFileName = null;
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// 设置上传图片的保存路径
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String savePath = this.getServletContext().getRealPath("/photos");
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File file = new File(savePath);
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// 判断上传文件的保存目录是否存在
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if (!file.exists() && !file.isDirectory()) {
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System.out.println(savePath + "目录不存在，需要创建");
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// 创建目录
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file.mkdir();
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}
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DiskFileItemFactory factory = new DiskFileItemFactory();
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// 2、创建一个文件上传解析器
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ServletFileUpload upload = new ServletFileUpload(factory);
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upload.setHeaderEncoding("UTF-8");
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// 3、判断提交上来的数据是否是上传表单的数据
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if (!ServletFileUpload.isMultipartContent(request)) {
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// 按照传统方式获取数据
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return;
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}
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try {
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List<FileItem> list = upload.parseRequest(request);
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System.out.println(list.toString());// 文件的路径 以及保存的路径
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for (FileItem item : list) {
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filename = item.getName();// 获得一个项的文件名称
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try {
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newFileName = id + filename.substring(filename.lastIndexOf("."));
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filename = id + filename.substring(filename.lastIndexOf("."));
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} catch (Exception e) {
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e.printStackTrace();
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}
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if (filename == null || filename.trim().equals("")) {// 如果為空則跳過
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continue;
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}
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// 報錯 需要過濾文件名稱 java.io.FileNotFoundException:
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// G:\测试02\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\FaceUp\WEB-INF\images\C:\Users\Ray\Pictures\2.jpeg
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// (文件名、目录名或卷标语法不正确。)
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filename = filename.substring(filename.lastIndexOf("\\") + 1);
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// System.out.print(filename);
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// 判断文件名后缀是否为JPG、JPEG、gif、GIF、jpg、jpeg
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if (filename.substring(filename.lastIndexOf(".") + 1).equals("JPG")
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|| filename.substring(filename.lastIndexOf(".") + 1).equals("JPEG")
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|| filename.substring(filename.lastIndexOf(".") + 1).equals("gif")
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|| filename.substring(filename.lastIndexOf(".") + 1).equals("GIF")
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|| filename.substring(filename.lastIndexOf(".") + 1).equals("jpg")
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|| filename.substring(filename.lastIndexOf(".") + 1).equals("jpeg")) {
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InputStream in = item.getInputStream();// 獲得上傳的輸入流
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FileOutputStream out = new FileOutputStream(savePath + "\\" + filename);// 指定web-inf目錄下的images文件
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request.setAttribute("path", "photos"+"\\" + filename);
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int len = 0;
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byte buffer[] = new byte[1024];
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while ((len = in.read(buffer)) > 0)// 每次讀取
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{
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out.write(buffer, 0, len);
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}
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in.close();
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out.close();
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item.delete();
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} else { //必须是图片才能上传否则失败
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request.setAttribute("update_msg", "上传失败，只能上传类型为jpg或GIF的图像文件！"+String.format("%tT",new Date()));
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// request.getRequestDispatcher("/WEB-INF/index.jsp").forward(request, response);
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// 转发到studentAddPhoto.jsp页面
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request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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return;
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}
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}
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} catch (FileUploadException e) {
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e.printStackTrace();
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}
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// 创建Photo对象
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Photo photo = new Photo();
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// 设置photoId
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photo.setPhotoId(id);
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// 设置photoName
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photo.setPhotoName(newFileName);
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// 创建PhotoService对象
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PhotoService service = new PhotoServiceImpl();
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Photo photo1= service.findPhotoByPhotoId(id);
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if (photo1==null) {
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service.addPhoto(photo);
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}else {
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service.updatePhoto(photo);
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}
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request.setAttribute("update_msg", "上传成功！"+String.format("%tT",new Date()));
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// request.getRequestDispatcher("/WEB-INF/index.jsp").forward(request, response);
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request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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}
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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}
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}
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//package web.servlet.file;
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//
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//import domain.Admin;
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//import domain.Photo;
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//import domain.Student;
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//import domain.Teacher;
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//import org.apache.commons.fileupload.FileItem;
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//import org.apache.commons.fileupload.FileUploadException;
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//import org.apache.commons.fileupload.disk.DiskFileItemFactory;
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//import org.apache.commons.fileupload.servlet.ServletFileUpload;
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//import service.PhotoService;
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//import service.impl.PhotoServiceImpl;
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//
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//import javax.servlet.ServletException;
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//import javax.servlet.annotation.WebServlet;
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//import javax.servlet.http.HttpServlet;
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//import javax.servlet.http.HttpServletRequest;
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//import javax.servlet.http.HttpServletResponse;
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//import javax.servlet.http.HttpSession;
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//import java.io.File;
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//import java.io.FileOutputStream;
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//import java.io.IOException;
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//import java.io.InputStream;
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//import java.util.Date;
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//import java.util.List;
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//
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//@WebServlet("/uploadImageServlet")
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//public class UploadImageServlet extends HttpServlet {
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// // 处理POST请求
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// protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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//
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// // 获取当前会话
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// HttpSession session = request.getSession();
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// // 获取当前会话中的学生对象
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// Student student = (Student) session.getAttribute("student");
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// // 获取当前会话中的教师对象
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// Teacher teacher = (Teacher) session.getAttribute("teacher");
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// // 获取当前会话中的管理员对象
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// Admin admin = (Admin) session.getAttribute("admin");
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// // 定义一个字符串变量，用于存储用户ID
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// String id = "";
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// // 如果当前会话中有学生对象
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// if (student != null) {
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// // 将学生ID赋值给id变量
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// id = student.getS_id();
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// }
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//
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// request.setAttribute("message", "");
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// request.setAttribute("path", "");
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// String filename = null;
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// String newFileName = null;
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// // 设置上传图片的保存路径-
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// String savePath = this.getServletContext().getRealPath("/photos");
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// File file = new File(savePath);
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// // 判断上传文件的保存目录是否存在-
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// if (!file.exists() && !file.isDirectory()) {
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// System.out.println(savePath + "目录不存在，需要创建");
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// // 创建目录
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// file.mkdir();
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// }
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// DiskFileItemFactory factory = new DiskFileItemFactory();
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// // 2、创建一个文件上传解析器-
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// ServletFileUpload upload = new ServletFileUpload(factory);
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// upload.setHeaderEncoding("UTF-8");
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// // 3、判断提交上来的数据是否是上传表单的数据-
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// if (!ServletFileUpload.isMultipartContent(request)) {
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// // 按照传统方式获取数据-
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// return;
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// }
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// try {
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// List<FileItem> list = upload.parseRequest(request);
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// System.out.println(list.toString());// 文件的路径 以及保存的路径-
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// for (FileItem item : list) {
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// filename = item.getName();// 获得一个项的文件名称-
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// try {
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// newFileName = id + filename.substring(filename.lastIndexOf("."));
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// filename = id + filename.substring(filename.lastIndexOf("."));
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// } catch (Exception e) {
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// e.printStackTrace();
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// }
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// if (filename == null || filename.trim().equals("")) {// 如果為空則跳過
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// continue;
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// }
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// // 報錯 需要過濾文件名稱 java.io.FileNotFoundException:
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// // G:\测试02\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\FaceUp\WEB-INF\images\C:\Users\Ray\Pictures\2.jpeg
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// // (文件名、目录名或卷标语法不正确。)
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//
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// filename = filename.substring(filename.lastIndexOf("\\") + 1);
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//// System.out.print(filename);
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// // 判断文件名后缀是否为JPG、JPEG、gif、GIF、jpg、jpeg
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// if (filename.substring(filename.lastIndexOf(".") + 1).equals("JPG")
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// || filename.substring(filename.lastIndexOf(".") + 1).equals("JPEG")
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// || filename.substring(filename.lastIndexOf(".") + 1).equals("gif")
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// || filename.substring(filename.lastIndexOf(".") + 1).equals("GIF")
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// || filename.substring(filename.lastIndexOf(".") + 1).equals("jpg")
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// || filename.substring(filename.lastIndexOf(".") + 1).equals("jpeg")) {
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// InputStream in = item.getInputStream();// 獲得上傳的輸入流
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// FileOutputStream out = new FileOutputStream(savePath + "\\" + filename);// 指定web-inf目錄下的images文件
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// request.setAttribute("path", "photos"+"\\" + filename);
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//
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// int len = 0;
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// byte buffer[] = new byte[1024];
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// while ((len = in.read(buffer)) > 0)// 每次讀取
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// {
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// out.write(buffer, 0, len);
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// }
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// in.close();
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// out.close();
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// item.delete();
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// } else { //必须是图片才能上传否则失败
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// request.setAttribute("update_msg", "上传失败，只能上传类型为jpg或GIF的图像文件！"+String.format("%tT",new Date()));
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//// request.getRequestDispatcher("/WEB-INF/index.jsp").forward(request, response);
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// // 转发到studentAddPhoto.jsp页面
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// request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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// return;
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// }
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// }
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// } catch (FileUploadException e) {
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// e.printStackTrace();
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// }
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//
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// // 创建Photo对象
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// Photo photo = new Photo();
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// // 设置photoId
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// photo.setPhotoId(id);
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// // 设置photoName
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// photo.setPhotoName(newFileName);
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// // 创建PhotoService对象
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// PhotoService service = new PhotoServiceImpl();
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//
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//
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// Photo photo1= service.findPhotoByPhotoId(id);
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// if (photo1==null) {
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// service.addPhoto(photo);
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// }else {
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// service.updatePhoto(photo);
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// }
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// request.setAttribute("update_msg", "上传成功！"+String.format("%tT",new Date()));
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//// request.getRequestDispatcher("/WEB-INF/index.jsp").forward(request, response);
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// request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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// }
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//
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// protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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// request.getRequestDispatcher("/WEB-INF/student/studentAddPhoto.jsp").forward(request, response);
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// }
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//}
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