循环遍历本地的图片使用BASE64编码，并在ajax也遍历图片

前端调用ajax到后端去图片的方法，并返回

 public  void search(HttpServletRequest request, HttpServletResponse response) throws Exception {
			 String path="D://alarmImages";
			 int fileNum = 0, folderNum = 0;
		        File file = new File(path);
		        List fileList=new ArrayList();
		        LinkedList<File> list = new LinkedList<>();
		        if (file.exists()) {
		            if (null == file.listFiles()) {
		                return;
		            }
		            list.addAll(Arrays.asList(file.listFiles()));
		            while (!list.isEmpty()) {
		                File[] files = list.removeFirst().listFiles();
		                if (null == files) {
		                    continue;
		                }
		                for (File f : files) {
		                    if (f.isDirectory()) {
		                        System.out.println("文件夹:" + f.getAbsolutePath());
		                        list.add(f);
		                        folderNum++;
		                    } else {
		                    	
		                        System.out.println("文件:" + f.getAbsolutePath());
		                        fileNum++;
		                        InputStream inputStream = null;
		                        byte[] data = null;
		                        try {
		                            inputStream = new FileInputStream(f);
		                            data = new byte[inputStream.available()];
		                            inputStream.read(data);
		                            inputStream.close();
		                        } catch (IOException e) {
		                            e.printStackTrace();
		                        }
		                        // 加密
		                        String a=Base64.encodeBase64String(data);
		                        System.out.println(a);
		                        fileList.add(a);
		                    }
		                }
		            }
		        } else {
		            System.out.println("文件不存在!");
		        }
		        System.out.println("文件夹数量:" + folderNum + ",文件数量:" + fileNum);
		        HashMap<String, Object> result = new HashMap<String, Object>();
		        PrintWriter writer;
				 try {
				      result.put("fileList", fileList);
				      response.setCharacterEncoding("utf-8");
				      writer = response.getWriter();
				      String jsonString = JSON.toJSONString(result);
				      writer.print(jsonString);
				    } catch (IOException e) {
				      e.printStackTrace();
				    }
		}

前端ajax拿到图片后，遍历

	 success:function(result){
		        var fileList = result.fileList;
		        for( var i in fileList ){
             	console.log(fileList[i]);
				}
				}	
		      });