老大让我看baidu他们的查公交是怎么做的，我就看了

突然发现，baidu的查公交，Json请求都很乱

朝阳公园西门3号门 人民大学 较快捷

http://map.baidu.com/?
newmap=1
&reqflag=pcmap
&biz=1
&qt=bt
&c=131
&sn=2$$$$$$%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8$$0$$$$
&en=2$$$$$$%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6$$1$$%E5%8C%97%E4%BA%AC%E5%B8%82%E6%B5%B7%E6%B7%80%E5%8C%BA$$
&sc=131
&ec=131
&rn=5
&tn=B_NORMAL_MAP
&nn=0
&ie=utf-8
&l=12
&b=(12936238.870000001,4805131.23;12999342.870000001,4841419.23)
&t=1374040925574

朝阳公园西门3号门 人民大学 少换乘

http://map.baidu.com/?
newmap=1
&reqflag=pcmap
&biz=1
&qt=bt
&c=131
&sn=1$$398370ff3287316244572645$$12966764.000000,4830838.000000$$%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8$$$$$$
&en=0$$ae80941a3f2fe5a796ec8428$$12949724.000000,4834278.000000$$%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6$$$$$$
&sq=%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8
&eq=%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6
&rn=5
&reqtp=1
&sy=2
&tn=B_NORMAL_MAP
&nn=0
&ie=utf-8
&l=13
&b=(12942477.76,4825002.470000001;12974029.76,4843146.470000001)
&t=1374041721621

朝阳公园西门3号门 人民大学 少步行

http://map.baidu.com/?
newmap=1
&reqflag=pcmap
&biz=1
&qt=bt
&c=131
&sn=1$$398370ff3287316244572645$$12966764.000000,4830838.000000$$%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8$$$$$$
&en=0$$ae80941a3f2fe5a796ec8428$$12949724.000000,4834278.000000$$%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6$$$$$$
&sq=%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8
&eq=%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6
&rn=5
&reqtp=1
&sy=3
&tn=B_NORMAL_MAP
&nn=0
&ie=utf-8
&l=13
&b=(12942477.76,4823722.470000001;12974029.76,4841866.470000001)
&t=1374041464046

朝阳公园西门3号门 人民大学 不坐地铁

http://map.baidu.com/?
newmap=1
&reqflag=pcmap
&biz=1
&qt=bt
&c=131
&sn=1$$398370ff3287316244572645$$12966764.000000,4830838.000000$$%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8$$$$$$
&en=0$$ae80941a3f2fe5a796ec8428$$12949724.000000,4834278.000000$$%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6$$$$$$
&sq=%E6%9C%9D%E9%98%B3%E5%85%AC%E5%9B%AD%E8%A5%BF%E9%97%A83%E5%8F%B7%E9%97%A8
&eq=%E4%BA%BA%E6%B0%91%E5%A4%A7%E5%AD%A6
&rn=5
&reqtp=1
&sy=4
&f=[0,2,4,7,5,8,9,10,11]
&tn=B_NORMAL_MAP&nn=0
&ie=utf-8
&l=13
&b=(12942253.76,4824106.470000001;12973805.76,4842250.470000001)
&t=1374041240573

四种不同的线路，很多参数可以不用的，而且参数的命名都很简略，有些让人不好猜
但是。。。 baidu的JSON返回就很规范了。

类似这样：

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没有一个文字部分，全部用的字符编码。哎。。
这种理念很先进，我们公司的Json返回，就有很多中文文字编码，UTF-8解析就经常出错。

baidu的Json里面，好多参数都是可以抛弃不用的。

而且他们的地址名字里面加了很多不知道是什么的东西，删去之后也能正常寻找。很无聊，很无奈。