1、pom.xml

    
         
     
      net.coobird
         
     
      thumbnailator
         
     
      0.4.8
     
    

2、代码

/**	 * 上传图片	 */	@RequestMapping(method = RequestMethod.POST, value = "upload")	public Object UploadFile(MultipartHttpServletRequest requestFile) throws IllegalStateException, IOException {		log.info("*******************进入图片上传的方法*************************");        ServletContext servletContext = WebContext.getServletContext();        // 得到文件绝对路径        String realPath = servletContext.getRealPath("/");        System.out.println("realPath:"+realPath);                InputStream is = null;        FileOutputStream fs = null;        		DataState dataState = new DataState();		HttpServletRequest request = WebContext.getServletRequest();		UserEntity user = WebContext.getUserEntity();		Iterator
    
      itr = requestFile.getFileNames();		requestFile.setCharacterEncoding("utf-8");		MultipartFile file = requestFile.getFile(itr.next());		// 转换成File		CommonsMultipartFile cf = (CommonsMultipartFile) file;		DiskFileItem fi = (DiskFileItem) cf.getFileItem();		File f = fi.getStoreLocation();								String fileName = file.getOriginalFilename();		System.out.println(fileName);		// 自定义的文件名称		String trueFileName = String.valueOf(System.currentTimeMillis()) + fileName;		String totrueFileName = String.valueOf(System.currentTimeMillis())+1 + fileName;		String time = new SimpleDateFormat("yyyyMMdd").format(new Date());				 /** 临时文件夹*/		 String imgPath = "uploadImgTemp" + File.separator;		 String tempPath = realPath +"\\"+ imgPath;		 System.out.println("old-path-" + tempPath);		 File oldFile = new File(tempPath);		 if (!oldFile.exists()) {		     oldFile.mkdirs();		 }		 /** 处理后文件夹*/		 String newImaPath = "uploadImg" + File.separator;		 String newPath = realPath +"\\" + newImaPath;		 System.out.println("new-path-" + newPath);		 File newFile = new File(newPath);		 if (!newFile.exists()) {		     newFile.mkdirs();		 }			/** 先存取源文件*/		is = file.getInputStream();		fs = new FileOutputStream(tempPath + trueFileName);		//...		if (file.getSize() > 0 && file.getSize()>1048576) {		    byte[] buffer = new byte[1024 * 1024];		    int bytesum = 0;		    int byteread = 0;		    while ((byteread = is.read(buffer)) != -1) {		        bytesum += byteread;		        fs.write(buffer, 0, byteread);		        fs.flush();		    }		    fs.close();		    is.close();		}		/** 处理源文件 ，进行压缩再放置到新的文件夹*/		String oldPath = tempPath + trueFileName;		String copyPath = newPath + totrueFileName;				Thumbnails.of(oldPath).scale(0.2f).toFile(copyPath);//按比例缩小 		File toFile = new File(copyPath);			log.info("*******************上传图片大小："+toFile.length()+"*************************");				//ftp上传		String filePath = Common.getValue("FTP_REMOTE_FILEPATH", "com.ztb.common.util.properties.ftp") + time;				boolean result = FtpUtil.upload(new File(copyPath), filePath, totrueFileName);		if (result == false) {			dataState.setStateCode(StateCode.OPT_ERROR);			dataState.setData("");			return DataEvent.wrap("uploadok", dataState);		}		String url = Common.getValue("RETURN_URL", "com.ztb.common.util.properties.ftp") + time + "/" + totrueFileName;		WebContext.getSession().setAttribute("url", url);		dataState.setStateCode(StateCode.OPT_OK);		dataState.setData(url);		return DataEvent.wrap("uploadok", dataState);	}