About splicing URL connection parameters problem (crawler).

Like here I'm looking for a link to the JSON of the background request:

First Page:

Http://www.igoldenbeta.com:8080/cn-jsfund-server-mobile/bkt/api?appkey=1.0&ttid=Android_unknown_unknown_ unknown_xxxx_1.4.0.0003_v10&t=2015-07-10+13%3a30%3a23&sid=&imei=1.0&v=2.0&sign= 64c5ec32720f97401aa502a74f41500b&data={%22limit%22%3a%2220%22%2c%22start%22%3a%220%22}&api= api.system.basket.adjustlist&imsi=1.0

Second Page:

Http://www.igoldenbeta.com:8080/cn-jsfund-server-mobile/bkt/api?appkey=1.0&ttid=Android_unknown_unknown_ unknown_xxxx_1.4.0.0003_v10&t=2015-07-10%2013:31:19&sid=&imei=1.0&v=2.0&sign= 203b7bf0fbc687c7d06d1d485b1a01da&data={%22limit%22:%2220%22,%22start%22:%2220%22}&api= api.system.basket.adjustlist&imsi=1.0

The URL is ENCode, and the following parameters are actually found by Decode:

First Page:

Http://www.igoldenbeta.com:8080/cn-jsfund-server-mobile/bkt/api

? appkey=1.0&ttid=android_unknown_unknown_unknown_xxxx_1.4.0.0003_v10&t=2015-07-10 13:30:23&sid= &imei=1.0&v=2.0&sign=64c5ec32720f97401aa502a74f41500b&data={"limit": "" "," start ":" 0 "}&api= api.system.basket.adjustlist&imsi=1.0

Second Page:

Http://www.igoldenbeta.com:8080/cn-jsfund-server-mobile/bkt/api

? appkey=1.0&ttid=android_unknown_unknown_unknown_xxxx_1.4.0.0003_v10&t=2015-07-10 13:31:19&sid= &imei=1.0&v=2.0&sign=203b7bf0fbc687c7d06d1d485b1a01da&data={"limit": "a", "start": "}&api" =api.system.basket.adjustlist&imsi=1.0

(if You do not encode this link in firefox, Firefox will automatically encode)

you can obviously see the paging parameters in the connection, then visit the third page , the following parameters are changed to:

Http://www.igoldenbeta.com:8080/cn-jsfund-server-mobile/bkt/api?appkey=1.0&ttid=Android_unknown_unknown_ Unknown_xxxx_1.4.0.0003_v10&t=2015-07-10 13:31:19&sid=&imei=1.0&v=2.0&sign= 203b7bf0fbc687c7d06d1d485b1a01da&data={"limit": "" "," Start ":"}&api=api.system.basket.adjustlist " &imsi=1.0

40 start, Take 20, is the third page, ah, no ...

After the discovery of other parameters are the same, only sign=203b7bf0fbc687c7d06d1d485b1a01da different,

It seems that the paging parameter is not allowed to be modified if it is the same sign, but I do not know the value of this parameter to the back of the Page.

About splicing URL connection parameters problem (crawler).