Java code to upload files and delete files in the code

1. Upload files to a specified address in the project

　　　　　@ResponseBody // return json data 
	@ApiOperation (value = "image upload generates an address") 
	@ RequestMapping (value = "/ testUploadimg", Method, = RequestMethod.POST) 
	public String uploadImg (@RequestParam ( "File") MultipartFile File, the HttpServletRequest Request) { 
		String path = ""; 
		String contentType = file.getContentType (); 
		String fileName = file.getOriginalFilename (); 
		// automatically acquired project root 
		String filePath = request.getSession () getServletContext ( ) getRealPath (.. "/") + "img / "; // this can fill a position corresponding 
		// String filePath = ""; 
		IF (file.isEmpty ()) { 
			return "file is empty!";
		} 
		The try { 
			// save the file to the project  
			path = uploadFile (file.getBytes (),filePath, fileName);
		} the catch (Exception E) { 
			// the TODO: Exception handle 
		}
		// 返回json
		return path;
	}

	public String uploadFile(byte[] file, String filePath, String fileName) throws Exception {
		String path = "";
		File targetFile = new File(filePath);
		if (!targetFile.exists()) {
			targetFile.mkdirs();
		}
		FileOutputStream out = new FileOutputStream(filePath + "/" + fileName);
		path = filePath + "/" + fileName;
		out.write(file);
		out.flush();
		out.close();
		return path;
	}

　　2. Delete the specified files and folders in the project

　　　　Boolean filetest public (String path) { 
		// delete the file 
		String strVectorFile = path; 
		Boolean BO = the deleteFile (strVectorFile); 
		// delete folders 
		String strVectorDir = "D: \\ test2"; 
		the deleteDirectory (strVectorDir); 
		return BO; 
	} 

	static Boolean the deleteFile public (String fileName) { 
		File File = new new File (fileName); 
		IF (file.isFile () && File.Exists ()) { 
			Boolean succeedDelete File.delete = (); 
			IF (succeedDelete) { 
				the System.out .println ( "delete a single file" + fileName + "success!"); 
				return to true; 
			} {the else 
				( "! failed" "delete a single file" + fileName +) System.out.println; 
				return to true;
			}
		} else {
			System.out.println ( "delete a single file" + fileName + "failed!"); 
			Return to false; 
		} 
	} 

	public static Boolean the deleteDirectory (String dir) { 
		// If dir is not a file ending delimiter, the file is automatically added delimiter 
		{IF (dir.endsWith (the File.separator)!) 
			dir = dir + the File.separator; 
		} 
		file dirFile = new new file (dir); 
		// if dir corresponding file does not exist, or is not a directory, exit 
		if ( !! dirFile.exists () || dirFile.isDirectory ()) { 
			System.out.println ( "delete directory failed" + dir + "directory does not exist!"); 
			return to false; 
		} 
		Boolean = In Flag to true; 
		// delete All files in the folder (including subdirectories) 
		file [] = dirFile.listFiles files (); 
		for (int I = 0; I <files.length; I ++) { 
			// delete the subfile
			IF (Files [I] .isFile ()) { 
				In Flag = the deleteFile (Files [I] .getAbsolutePath ()); 
				IF (In Flag!) { 
					BREAK; 
				} 
			} 
			// delete the subdirectory 
			the else { 
				In Flag = the deleteDirectory (Files [I ] .getAbsolutePath ()); 
				IF (Flag)! { 
					BREAK; 
				} 
			} 
		} 

		IF (Flag) {! 
			System.out.println ( "delete directory failed"); 
			return false; 
		} 

		// remove the current directory 
		if (dirFile. the delete ()) { 
			System.out.println ( "remove directory" + dir + "success!"); 
			return to true; 
		} the else { 
			System.out.println ( "remove directory" + dir + "failed!"); 
			return to false; 
		} 
	}