变量名:值
"title":"肖申克的救赎"
值可以是结构体（类），如下，用大括号括起来：
"images":
{"small":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/ipst\/public\/p480747492.jpg",
"large":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/lpst\/public\/p480747492.jpg",
"medium":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/spst\/public\/p480747492.jpg"},
值可以是数组，如下，用中括号括起来：
"genres":["犯罪","剧情"],
数组可以由结构体（类）构成：
"casts":[
{"avatars":{"small":"http:\/\/img3.douban.com\/img\/celebrity\/small\/17525.jpg","large":"http:\/\/img3.douban.com\/img\/celebrity\/large\/17525.jpg","medium":"http:\/\/img3.douban.com\/img\/celebrity\/medium\/17525.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1054521\/“,”id":"1054521",
"name":"蒂姆·罗宾斯"},
{"avatars":{"small":"http:\/\/img3.douban.com\/img\/celebrity\/small\/34642.jpg","large":"http:\/\/img3.douban.com\/img\/celebrity\/large\/34642.jpg","medium":"http:\/\/img3.douban.com\/img\/celebrity\/medium\/34642.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1054534\/",
"id":"1054534",
"name":"摩根·弗里曼”},
{“avatars":{"small":"http:\/\/img5.douban.com\/img\/celebrity\/sL;POL,mall\/5837.jpg","large":"http:\/\/img5.douban.com\/img\/celebrity\/large\/5837.jpg","medium":"http:\/\/img5.douban.com\/img\/celebrity\/medium\/5837.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1041179\/",
"id":"1041179",
"name":"鲍勃·冈顿"}],
http://api.douban.com/v2/movie/top250
{"rating":{"max":10,"average":9.6,"stars":"50","min":0},
"genres":["犯罪","剧情"],
"collect_count":783892,
"casts":[
{"avatars":{"small":"http:\/\/img3.douban.com\/img\/celebrity\/small\/17525.jpg","large":"http:\/\/img3.douban.com\/img\/celebrity\/large\/17525.jpg","medium":"http:\/\/img3.douban.com\/img\/celebrity\/medium\/17525.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1054521\/“,”id":"1054521",
"name":"蒂姆·罗宾斯"},
{"avatars":{"small":"http:\/\/img3.douban.com\/img\/celebrity\/small\/34642.jpg","large":"http:\/\/img3.douban.com\/img\/celebrity\/large\/34642.jpg","medium":"http:\/\/img3.douban.com\/img\/celebrity\/medium\/34642.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1054534\/",
"id":"1054534",
"name":"摩根·弗里曼”},
{“avatars":{"small":"http:\/\/img5.douban.com\/img\/celebrity\/sL;POL,mall\/5837.jpg","large":"http:\/\/img5.douban.com\/img\/celebrity\/large\/5837.jpg","medium":"http:\/\/img5.douban.com\/img\/celebrity\/medium\/5837.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1041179\/",
"id":"1041179",
"name":"鲍勃·冈顿"}],
"title":"肖申克的救赎",
"original_title":"The Shawshank Redemption",
"subtype":"movie",
"directors":
[{"avatars":
{"small":"http:\/\/img3.douban.com\/img\/celebrity\/small\/230.jpg","large":"http:\/\/img3.douban.com\/img\/celebrity\/large\/230.jpg","medium":"http:\/\/img3.douban.com\/img\/celebrity\/medium\/230.jpg"},
"alt":"http:\/\/movie.douban.com\/celebrity\/1047973\/",
"id":"1047973",
"name":"弗兰克·德拉邦特"}],
"year":"1994",
"images":
{"small":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/ipst\/public\/p480747492.jpg",
"large":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/lpst\/public\/p480747492.jpg",
"medium":"http:\/\/img3.douban.com\/view\/movie_poster_cover\/spst\/public\/p480747492.jpg"},
"alt":"http:\/\/movie.douban.com\/subject\/1292052\/",
"id":"1292052"},
原文：http://www.cnblogs.com/zhongriqianqian/p/4135119.html