也不知道这个是不是哈希得来的，希望兄弟们可以帮忙看看，出出主意。
https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-07/1002_0953_20160802100400_0c37f9.jpg
以上是一个图片链连， 1002_0953_20160802100400_0c37f9.jpg
1002 —— 0953 是不变的，代表摄像头吧
20160802100400 代表 YYYYMMDDHHMMSS
0c37f9 是个随机生成的 6 位字符串或者哈希值，
现在如果我能够了解这个值是如何得来的，就可以直接去 AWS 下载图片了，兄弟们有没有高见？可以把时间戳和摄像头哈希成 6 位的字符么？我用的哈希都是比这个 6 位数长的，不好意思，对这个不熟。
API 文档在 这里
以下是 API 的输出，可以看到所以图片的链接都是有个随机数在后面的。
"odata.metadata": "http://datamall2.mytransport.sg/ltaodataservice/$metadata#CameraImageSet",
"value": [
{
"CameraID": "1001",
"Latitude": 1.29531332,
"Longitude": 103.871146,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1001_1008_20160802101200_9d8b5b.jpg"
},
{
"CameraID": "1002",
"Latitude": 1.319541067,
"Longitude": 103.8785627,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1002_0953_20160802101200_36a753.jpg"
},
{
"CameraID": "1003",
"Latitude": 1.323957439,
"Longitude": 103.8728576,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1003_0953_20160802101000_93254d.jpg"
},
{
"CameraID": "1004",
"Latitude": 1.319535712,
"Longitude": 103.8750668,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1004_0953_20160802101201_b172d8.jpg"
},
{
"CameraID": "1005",
"Latitude": 1.363519886,
"Longitude": 103.905394,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1005_1008_20160802101201_9c9636.jpg"
},
{
"CameraID": "1006",
"Latitude": 1.357098686,
"Longitude": 103.902042,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1006_1003_20160802101001_74ae66.jpg"
},
{
"CameraID": "1501",
"Latitude": 1.27414394350065,
"Longitude": 103.851316802547,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1501_1003_20160802101201_09c088.jpg"
},
{
"CameraID": "1502",
"Latitude": 1.27135090682664,
"Longitude": 103.861828440597,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1502_1003_20160802101201_504789.jpg"
},
{
"CameraID": "1503",
"Latitude": 1.27066408655104,
"Longitude": 103.856977943394,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1503_1003_20160802101200_52cdb2.jpg"
},
{
"CameraID": "1504",
"Latitude": 1.29409891409364,
"Longitude": 103.876056196568,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1504_0938_20160802101201_37aa6b.jpg"
},
{
"CameraID": "1505",
"Latitude": 1.2752977149006,
"Longitude": 103.866390381759,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1505_1008_20160802101201_8d709f.jpg"
},
{
"CameraID": "1701",
"Latitude": 1.323604823,
"Longitude": 103.8587802,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1701_1006_20160802101300_46a943.jpg"
},
{
"CameraID": "1702",
"Latitude": 1.34355015,
"Longitude": 103.8601984,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1702_1009_20160802101300_66674d.jpg"
},
{
"CameraID": "1703",
"Latitude": 1.32814722194857,
"Longitude": 103.862203282048,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1703_1010_20160802101201_b2799f.jpg"
},
{
"CameraID": "1704",
"Latitude": 1.28569398886979,
"Longitude": 103.837524510188,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1704_1011_20160802101300_43bee7.jpg"
},
{
"CameraID": "1705",
"Latitude": 1.375925022,
"Longitude": 103.8587986,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1705_1011_20160802101300_0221c2.jpg"
},
{
"CameraID": "1706",
"Latitude": 1.38861,
"Longitude": 103.85806,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1706_1010_20160802101300_53ef7e.jpg"
},
{
"CameraID": "1707",
"Latitude": 1.28036584335876,
"Longitude": 103.830451146503,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1707_1010_20160802101300_96145f.jpg"
},
{
"CameraID": "1709",
"Latitude": 1.31384231654635,
"Longitude": 103.845603032574,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1709_1012_20160802101300_236a5c.jpg"
},
{
"CameraID": "1711",
"Latitude": 1.35296,
"Longitude": 103.85719,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/1711_1011_20160802101300_6509c5.jpg"
},
{
"CameraID": "2701",
"Latitude": 1.447023728,
"Longitude": 103.7716543,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/2701_1009_20160802101300_17b27a.jpg"
},
{
"CameraID": "2702",
"Latitude": 1.445554109,
"Longitude": 103.7683397,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/2702_1012_20160802101300_cebe1b.jpg"
},
{
"CameraID": "2703",
"Latitude": 1.35047790791386,
"Longitude": 103.791033581325,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/2703_1010_20160802101201_0645b0.jpg"
},
{
"CameraID": "2704",
"Latitude": 1.429588536,
"Longitude": 103.769311,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/2704_1008_20160802101202_c013c4.jpg"
},
{
"CameraID": "2705",
"Latitude": 1.36728572,
"Longitude": 103.7794698,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/2705_1010_20160802101201_b45a63.jpg"
},
{
"CameraID": "3702",
"Latitude": 1.33831,
"Longitude": 103.98032,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3702_1010_20160802101202_70004b.jpg"
},
{
"CameraID": "3704",
"Latitude": 1.2958550156561,
"Longitude": 103.880314665981,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3704_1010_20160802101201_ddf222.jpg"
},
{
"CameraID": "3705",
"Latitude": 1.32743,
"Longitude": 103.97383,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3705_1010_20160802101202_940482.jpg"
},
{
"CameraID": "3793",
"Latitude": 1.309330837,
"Longitude": 103.9350504,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3793_1010_20160802101201_0495a2.jpg"
},
{
"CameraID": "3795",
"Latitude": 1.30145145166066,
"Longitude": 103.910596320237,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3795_1010_20160802101202_9389b3.jpg"
},
{
"CameraID": "3796",
"Latitude": 1.297512569,
"Longitude": 103.8983019,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3796_1010_20160802101201_0671e8.jpg"
},
{
"CameraID": "3797",
"Latitude": 1.29565733262976,
"Longitude": 103.885283049309,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3797_1011_20160802101202_a8da2c.jpg"
},
{
"CameraID": "3798",
"Latitude": 1.29158484,
"Longitude": 103.8615987,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/3798_1010_20160802101201_c0e278.jpg"
},
{
"CameraID": "4701",
"Latitude": 1.2871,
"Longitude": 103.79633,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4701_1008_20160802101202_5f569e.jpg"
},
{
"CameraID": "4702",
"Latitude": 1.27237,
"Longitude": 103.8324,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4702_1010_20160802101201_525f4c.jpg"
},
{
"CameraID": "4703",
"Latitude": 1.348697862,
"Longitude": 103.6350413,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4703_1009_20160802101300_245a7e.jpg"
},
{
"CameraID": "4704",
"Latitude": 1.27877,
"Longitude": 103.82375,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4704_1009_20160802101201_5c9ee1.jpg"
},
{
"CameraID": "4705",
"Latitude": 1.32618,
"Longitude": 103.73028,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4705_1010_20160802101202_2c2111.jpg"
},
{
"CameraID": "4706",
"Latitude": 1.29792,
"Longitude": 103.78205,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4706_1010_20160802101202_17ab81.jpg"
},
{
"CameraID": "4707",
"Latitude": 1.33344648135658,
"Longitude": 103.652700847056,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4707_1009_20160802101203_c6fd1e.jpg"
},
{
"CameraID": "4708",
"Latitude": 1.29939,
"Longitude": 103.7799,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4708_1010_20160802101202_f1882b.jpg"
},
{
"CameraID": "4710",
"Latitude": 1.32153,
"Longitude": 103.75273,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4710_1012_20160802101300_2d8028.jpg"
},
{
"CameraID": "4712",
"Latitude": 1.341244001,
"Longitude": 103.6439134,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4712_1010_20160802101202_afb948.jpg"
},
{
"CameraID": "4713",
"Latitude": 1.347645829,
"Longitude": 103.6366955,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4713_1011_20160802101300_8bb9c7.jpg"
},
{
"CameraID": "4714",
"Latitude": 1.31023,
"Longitude": 103.76438,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4714_1009_20160802101203_690d16.jpg"
},
{
"CameraID": "4716",
"Latitude": 1.32227,
"Longitude": 103.67453,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4716_1010_20160802101203_0d7160.jpg"
},
{
"CameraID": "4798",
"Latitude": 1.25999999687243,
"Longitude": 103.823611110166,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4798_1011_20160802101204_f7538b.jpg"
},
{
"CameraID": "4799",
"Latitude": 1.26027777363278,
"Longitude": 103.823888890049,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/4799_1010_20160802101204_db2424.jpg"
},
{
"CameraID": "5794",
"Latitude": 1.3309693,
"Longitude": 103.9168616,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/5794_1010_20160802101204_7725e4.jpg"
},
{
"CameraID": "5795",
"Latitude": 1.326024822,
"Longitude": 103.905625,
"ImageLink": "https://s3-ap-southeast-1.amazonaws.com/mtpdm/2016-08-02/10-15/5795_1010_20160802101204_a61365.jpg"
}
这是一个专为移动设备优化的页面（即为了让你能够在 Google 搜索结果里秒开这个页面），如果你希望参与 V2EX 社区的讨论，你可以继续到 V2EX 上打开本讨论主题的完整版本。
V2EX 是创意工作者们的社区，是一个分享自己正在做的有趣事物、交流想法，可以遇见新朋友甚至新机会的地方。
V2EX is a community of developers, designers and creative people.