common upload乱码

Posted 2020-07-28 hhls

 

 

1. request.setCheracterEncoding("utf-8");   
2. DiskFileUpload.setHeaderEncoding("utf-8");   
3. FileItem.getString("utf-8");  
   上面这三个地方设置好之后就应该解决了。

   package onlineTest.server;
   
   import java.io.File;
   import java.io.IOException;
   import java.util.List;
   
   import javax.servlet.ServletException;
   import javax.servlet.http.HttpServlet;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
   
   import onlineTest.bean.User;
   import onlineTest.dao.UserDao;
   
   import org.apache.commons.fileupload.FileItem;
   import org.apache.commons.fileupload.disk.DiskFileItemFactory;
   import org.apache.commons.fileupload.servlet.ServletFileUpload;
   
   public class ReceiveFile extends HttpServlet {
   
       private String uploadPath = "uploadpic/upload/"; // 上传文件的目录
       private String tempPath = "uploadpic/uploadtmp/"; // 临时文件目录
       /* private String serverPath = null; */
       private String[] fileType = new String[] { ".jpg", ".gif", ".bmp", ".png",".jpeg", ".ico" };
       private int sizeMax = 5;// 图片最大上限
   
       @Override
       protected void doPost(HttpServletRequest request,
               HttpServletResponse response) throws ServletException, IOException {
           request.setCharacterEncoding("utf-8");  
           // 服务器端根目录
           String serverPath = getServletContext().getRealPath("/").replace("\\","/");
           System.out.println("地址+" + serverPath);
           // Servlet初始化时执行,如果上传文件目录不存在则自动创建
           if (!new File(serverPath + uploadPath).isDirectory()) {
               new File(serverPath + uploadPath).mkdirs();
           }
           if (!new File(serverPath + tempPath).isDirectory()) {
               new File(serverPath + tempPath).mkdirs();
           }
   
           DiskFileItemFactory factory = new DiskFileItemFactory();
           factory.setSizeThreshold(5 * 1024); // 最大缓存
           factory.setRepository(new File(serverPath + tempPath));// 临时文件目录
   
           ServletFileUpload upload = new ServletFileUpload(factory);
           upload.setSizeMax(sizeMax * 1024 * 1024);// 文件最大上限
           upload.setHeaderEncoding("utf-8");
           String filePath = null;
           try {// 解析request对象中的表单项
               List<FileItem> items = upload.parseRequest(request);// 获取所有文件列表 ; list中是FileItem对象
               // 提取文本
               for (int i = 0; i < items.size(); i++) {
                   // 里面一个for循环，获取一行的数据
                   FileItem item = items.get(i);
                   
                   if (!item.isFormField()) {// 文件名 &nbsp; 表单文本项
                       String fileName = item.getName().toLowerCase();
                       item.getString("utf-8");
                       if (fileName.endsWith(fileType[0])
                               || fileName.endsWith(fileType[1])
                               || fileName.endsWith(fileType[2])
                               || fileName.endsWith(fileType[3])
                               || fileName.endsWith(fileType[4])
                               || fileName.endsWith(fileType[5])) {
                           filePath = serverPath + uploadPath + fileName;
                           
                           // System.out.println(filePath);
                           File file = new File(filePath);
                           item.write(file);
                           System.out.println("fileName+" + fileName);
                           System.out.println("filePath+" + filePath);
                           System.out.println(getClass().getResource("/").getFile().toString());
                           
                           User u =new User();
                           u=(User)request.getSession().getAttribute("user");
                           u.setUrl(fileName);
                           int result = UserDao.addFavicon(u);
                           if (result==0) {
                               request.setAttribute("errorMsg",
                                       "上传失败,请确认上传的文件存在并且类型是图片!");    
                           } else {
                               request.setAttribute("errorMsg", "上传成功，请右键点击刷新(或者按F5)");                        
                           }
                           request.getRequestDispatcher(
                                   "web/common/show/uploaderror.jsp").forward(
                                   request, response);
                       } else {
                           request.setAttribute("errorMsg",
                                   "上传失败,请确认上传的文件存在并且类型是图片!");
                           request.getRequestDispatcher(
                                   "web/common/show/uploaderror.jsp").forward(
                                   request, response);
                       }
                   } else {
                       // 非文件流
                       String value = item.getString();
                       value = new String(value.getBytes("ISO-8859-1"), "UTF-8");
                       // System.out.println(value);
                       System.out.println(value);
                   }
   
               }
           } catch (Exception e) {
               e.printStackTrace();
               request.setAttribute("errorMsg", "上传失败,请确认上传的文件存在并且类型是图片!");
               request.getRequestDispatcher("web/common/show/uploaderror.jsp")
                       .forward(request, response);
           }
       }
   
       @Override
       protected void doGet(HttpServletRequest req, HttpServletResponse resp)
               throws ServletException, IOException {
           this.doPost(req, resp);
       }
   }