java上传文件错误的解决办法 Java上传文件错误java.lang.NoSuchMethodException的解决办法

java.lang.NoSuchMethodException: [Lorg.springframework.web.multipart.MultipartFile;.<init>()
  at java.lang.Class.getConstructor0(Unknown Source)
  at java.lang.Class.getDeclaredConstructor(Unknown Source)
  at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:104)
  at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:137)
  at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:80)

@RequestMapping(value="uploadFilesForWEditor",method={RequestMethod.GET,RequestMethod.POST})
  @ResponseBody
  public static Map<String,Object> uploadFilesForWEditor(@RequestParam("files")MultipartFile[] files,HttpServletRequest request,HttpServletResponse response){
    Map<String,Object> map=new HashMap<>();
    List<String> url = new ArrayList<>();
    for (int i = 0; i < files.length; i++) {
      String result=FileUploadUtils.fileUpload(files[i], request, response);
      if(result!=""){
        url.add(result);
      }
    }
    if(url.size()>0){
      map.put("errno",0);
      map.put("msg","上传成功");
      map.put("data",url);
    }else{
      map.put("errno",1);
      map.put("msg","上传失败");
      map.put("data",url);
    }
    return map;
  }

public static String fileUpload(MultipartFile file,HttpServletRequest request,HttpServletResponse response){
    //获取图片的原名字
    String oldName=file.getOriginalFilename();
    String timeName=System.currentTimeMillis()+"_";
    String newName=timeName+oldName;  
    //获取项目的路径 在项目路径下新建文件夹
    String path= "D:/uploadFile";
    //新建 uploadFile 文件夹
    File parentPath=new File(path);
    if(!parentPath.exists()){
      parentPath.mkdirs();
    }
    String src="";
    try {
      file.transferTo(new File(parentPath,newName));
      File theFile=new File(parentPath+"/"+newName);
      if(theFile.exists()){
        //拼接图片的相对路径作为URL
        src="/"+newName;
      }else{
        src="";
      }
    } catch (IllegalStateException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return src;
  }