请问图片上传怎么每次只上传一张

/**

• 批量上传
• @param {Object} imgFiles 图片数组

• @param {Object} callback 成功回调[successCount:上传成功图片数量;failureCount:上传失败图片数量]
  */
  imgUpload : function(selectJob,callback){
  BizJob.getSetting(selectJob);
  imgFiles = [];
  var assets = BizEvent.getAllTableData();
  assets.G_PROBLEM_REC.forEach(function(record){
  record.IMGS.forEach(function(img){
  //filePath = Pictrue.getRealPath(img);
  if(!_photoUploadObj[img]){
  imgFiles.push(img);
  console.log("imgFiles--one--："+imgFiles)
  }
  });
  });
  console.log("imgFiles----:"+imgFiles);
  if(imgFiles && imgFiles.length>0){
  console.log("imgFiles长度---:"+imgFiles.length);
  finish=0;
  var total = imgFiles.length;
  BizJob.showProgress(total);

      //mui.each(imgFiles,function(i,u){  
      for(var i in imgFiles){  
          photo = imgFiles[i];  
          console.log("Photo------:"+photo);  
          console.log(1);  
          BizJob.savePhoto(selectJob,Pictrue.getRealPath(photo),function(){  
              console.log("_photoUploadObj--2----:"+JSON.stringify(_photoUploadObj));  
              finish++;  
              successCount++;  
              BizJob.setProgress(finish,total);  
              if(finish>=total){  
                  setTimeout(function(){  
                      BizJob.hideProgress();  
                      if(callback)  
                          callback(successCount,failureCount);  
                  },500);  
              }  
          },function(){  
              finish++;  
              failureCount++;  
              BizJob.setProgress(finish,total);  
              if(finish>=total){  
                  setTimeout(function(){  
                      BizJob.hideProgress();  
                      if(callback)  
                          callback(successCount,failureCount);  
                  },500);  
              }  
          });  
      }  
  }else{  
      if(callback)  
          callback(0,0);  
  }  

  },
  /**

• 同步验收单照片
• @param {Object} selectJob 工单照片
• @param {Function} _success 成功回调
• @param {Function} _failure 失败回调
  */
  savePhoto : function(selectJob, path, _success,_failure){
  var paramUrl = BizConfig.getUrl() + "/uploadPhoto?";
  var token = Zhhy.DBHelper.getVal(BizConfig.TOKEN);
  var task = plus.uploader.createUpload( paramUrl,
  { method:"POST",blocksize:204800,priority:100 },
  function ( t, status ) {
  // 上传完成
  if ( status == 200 ) {
  _photoUploadObj[photo] = 1;
  console.log("_photoUploadObj-----:"+JSON.stringify(_photoUploadObj));
  BizJob.setSetting(selectJob);
  _success();
  } else {
  var msg = "上传工单照片失败" +status;
  _failure(msg);
  console.log("失败："+status);
  }
  }
  );
  task.addFile(path, {key:".jpg"});
  task.addData("JOB_ID", selectJob.ID);
  task.addData("files", path);
  task.addData("token", token);
  task.start();
  },
  /**
• 进度条
  */
  showProgress : function(size){
  ProgressUtil.showProgress({
  content : "上传图片",
  total : size
  });
  },
  hideProgress : function(){
  ProgressUtil.hideProgress();
  },
  setProgress : function(finish,total){
  ProgressUtil.setProgress(finish);
  },
  /**
• 获取基本设置数据
• photoStatus
  */
  getSetting : function(selectJob){
  _photoUploadObj = Zhhy.DBHelper.getVal("photoStatus"+selectJob.ID);
  if(!_photoUploadObj){
  _photoUploadObj = {};
  }
  },
  /**
• 保存基本设置数据
• json
  */
  setSetting : function(selectJob){
  Zhhy.DBHelper.setVal("photoStatus"+selectJob.ID, _photoUploadObj);
  }