wx.chooseImage两次上传同一张图片后success回调中tempFilePaths分别为： 那

http://tmp/wx5869c91dd67e959f.o6zAJs4ANprEx9qknV0OGeVl0950.3nc64NRkFBbnee3bd3624e46646db8d131ed2fc6f329.jpeg

http://tmp/wx5869c91dd67e959f.o6zAJs4ANprEx9qknV0OGeVl0950.aaoXR8tNjcnree3bd3624e46646db8d131ed2fc6f329.jpeg

那怎么判断是不是同一张图片呢？