java实现多文件上传至本地服务器功能

function uploadFile() { 
  var files = document.getElementById("annexUrl").files; 
  if (files.length != 0) { 
   var formData = new FormData(); 
   for (var i = 0; i 

// 多文件上传，返回一个对象集合（附件地址，名称） 
 @RequestMapping(value = "saveFiles", method = RequestMethod.POST) 
 @ResponseBody 
 public JSONObject saveFiles(HttpServletRequest request, HttpServletResponse response) { 
  JSONObject jsOnObject= new JSONObject(); 
  try { 
   request.setCharacterEncoding("UTF-8"); 
  } catch (UnsupportedEncodingException e) { 
   e.printStackTrace(); 
  } 
  Collection parts = null; 
  try { 
   parts = request.getParts(); 
  } catch (IOException e) { 
   e.printStackTrace(); 
  } catch (ServletException e) { 
   e.printStackTrace(); 
  } 
 
  Iterator iterator = parts.iterator(); 
//  名称集合，返回给前台 
  List list = new ArrayList<>(); 
  while (iterator.hasNext()) { 
   Part part = iterator.next(); 
   // 生成实际存储的真实文件名(唯一) 
//   不知道为什么，文件上传必须得包含获取到的文件名，否则报文件名、目录名或卷标语法不正确，图片上传没有这种限制 
//   文件名，保存导数据库，用来界面显示 
   String name = part.getName(); 
   String realName = UUID.randomUUID().toString() + name; 
 
   list.add(name + "&&" + realName); 
   ///home/tomcat/apache-tomcat-9.0.1/files 
   String realPath = "D:" + File.separator + "apache-tomcat-8.5.15" + File.separator + "files"; 
   // String realPath = "C:" + File.separator + "XHJ224" + File.separator + "software" + File.separator + "apache-tomcat-9.0.1" + File.separator + "files"; 
//    String realPath = File.separator + "home" + File.separator + "tomcat" + File.separator + "apache-tomcat-9.0.1" + File.separator + "files"; 
   File file = new File(realPath); 
   //如果目录不存在 
   if (!file.isDirectory()) { 
    //创建文件上传目录 
    file.mkdirs(); 
   } 
   // 文件存放的真实路径 
   String filePath = realPath + File.separator + realName; 
   try { 
    part.write(filePath); 
   } catch (IOException e) { 
    e.printStackTrace(); 
   } 
  } 
  jsonObject.put("data", list); 
  return jsonObject; 
 }