2018-01-02技术
弹幕是通过cid（也就是comment id）获取的，不同类型的视频获取cid的方法不同
aid = av id 也就是 视频id 也就是 AV号
cid = comment id 也就是 弹幕id
通过aid获取cid
http://www.bilibili.com/widget/getPageList?aid=[aid]
通过cid获取弹幕
http://comment.bilibili.com/[cid].xml
以AV7为例：
视频地址 http://www.bilibili.com/video/av7/
获取AID=7的CID http://www.bilibili.com/widget/getPageList?aid=7
获取CID=3625120的弹幕内容 http://comment.bilibili.com/3625120.xml
season_id 也就是 番剧id，按每个番剧的每一季分开
episode_id 也就是 分集id
要获取番剧视频的cid，有两种方式
http://bangumi.bilibili.com/web_api/get_ep_list?season_id=[season_id]
以番剧844第五话为例：
https://bangumi.bilibili.com/anime/844/play#15185
season_id为844，episode_id为15185
http://bangumi.bilibili.com/web_api/get_ep_list?season_id=844
取得json:
{
"code": 0,
"message": "success",
"result": [
{
"avid": 71026,
"cid": 245281,
"episode_id": 15190,
"index": "0"
},
{
"avid": 77011,
"cid": 245279,
"episode_id": 15189,
"index": "1"
},
{
"avid": 80017,
"cid": 5852080,
"episode_id": 15188,
"index": "2"
},
{
"avid": 82593,
"cid": 139632,
"episode_id": 15187,
"index": "3"
},
{
"avid": 85332,
"cid": 144834,
"episode_id": 15186,
"index": "4"
},
{
"avid": 87845,
"cid": 149498,
"episode_id": 15185,
"index": "5"
},
{
"avid": 90597,
"cid": 151919,
"episode_id": 15184,
"index": "6"
},
{
"avid": 92902,
"cid": 156251,
"episode_id": 15183,
"index": "7"
},
{
"avid": 95117,
"cid": 160880,
"episode_id": 15182,
"index": "8"
},
{
"avid": 97185,
"cid": 161758,
"episode_id": 15181,
"index": "9"
},
{
"avid": 99403,
"cid": 165706,
"episode_id": 15180,
"index": "10"
},
{
"avid": 102808,
"cid": 170654,
"episode_id": 15179,
"index": "11"
},
{
"avid": 105403,
"cid": 174833,
"episode_id": 15178,
"index": "12"
},
{
"avid": 107885,
"cid": 179470,
"episode_id": 15177,
"index": "13"
},
{
"avid": 111029,
"cid": 184807,
"episode_id": 15176,
"index": "14"
},
{
"avid": 113813,
"cid": 189414,
"episode_id": 15175,
"index": "15"
},
{
"avid": 116439,
"cid": 194330,
"episode_id": 15174,
"index": "16"
},
{
"avid": 119440,
"cid": 198458,
"episode_id": 15173,
"index": "17"
},
{
"avid": 122500,
"cid": 203634,
"episode_id": 15172,
"index": "18"
},
{
"avid": 125701,
"cid": 208943,
"episode_id": 15171,
"index": "19"
},
{
"avid": 129619,
"cid": 216698,
"episode_id": 15170,
"index": "20"
},
{
"avid": 133373,
"cid": 222256,
"episode_id": 15169,
"index": "21"
},
{
"avid": 136978,
"cid": 228121,
"episode_id": 15168,
"index": "22"
},
{
"avid": 140204,
"cid": 233023,
"episode_id": 15167,
"index": "23"
},
{
"avid": 143012,
"cid": 237316,
"episode_id": 15166,
"index": "24"
},
{
"avid": 145992,
"cid": 242082,
"episode_id": 15165,
"index": "25"
},
{
"avid": 148841,
"cid": 246675,
"episode_id": 15164,
"index": "26"
}
]
}
在json中获取episode_id为15185的cid为149498
http://comment.bilibili.com/149498.xml
http://bangumi.bilibili.com/web_api/get_source
post一个数据"episode_id=15185"
取得json：
{
"code": 0,
"message": "success",
"result": {
"aid": 87845,
"cid": 149498,
"episode_status": 2,
"pay_user": {
"status": 0
},
"payment": {
"price": "0"
},
"player": "vupload",
"pre_ad": 0,
"season_status": 2,
"vid": "51598974"
}
}
cid为149498
http://comment.bilibili.com/149498.xml
<d p="[时间],[模式],[字号],[颜色],[发送时间戳],[弹幕池],[用户id的CRC32b加密],[弹幕id]">弹幕内容</d>