Method uploadFile

prototype/baseComponent.js:186–199

(uptoken, key, localFile)

  		return putPolicy.token();
	}
	uploadFile(uptoken, key, localFile){
		return new Promise((resolve, reject) => {
			var extra = new qiniu.io.PutExtra();
		    qiniu.io.putFile(uptoken, key, localFile, extra, function(err, ret) {
			    if(!err) {  
			    	resolve(ret.key)
			    } else {
			    	console.log('图片上传至七牛失败', err);
			    	reject(err)
			    }
		  	});

		})
	}	
}