查询各分类中最大自增ID

一经以往有表结构:

百度公开有三个音乐接口,里面分好了频道类别。上面是3个接口的一个url地址。

CREATE TABLE `msg_detail` (
    `id` INT(11) NOT NULL AUTO_INCREMENT COMMENT 'id',
    `title` VARCHAR(200) NOT NULL DEFAULT '' COMMENT '标题',
    `content` TEXT NOT NULL COMMENT '内容',
    `audio_url` VARCHAR(255) NOT NULL DEFAULT '' COMMENT '音频地址',
    `type_id` TINYINT(4) NOT NULL DEFAULT '0',
     PRIMARY KEY (`id`),
    INDEX `cid` (`cid`) USING BTREE,
    INDEX `column_id` (`column_id`) USING BTREE
)
COMMENT='内参表'
COLLATE='utf8_general_ci'
ENGINE=InnoDB
AUTO_INCREMENT=1;
const QString url_getOnlineChannel = "http://fm.baidu.com/dev/api/?tn=channellist";             //url->频道ID
const QString url_getOnlineSheet = "http://fm.baidu.com/dev/api/?tn=playlist&format=json&id=";  //频道ID->歌曲ID
const QString url_getOnlineMusic = "http://music.baidu.com/data/music/fmlink?type=mp3&rate=320&songIds=";  //歌曲ID->歌曲信息

 

会见每一个url都会回去一个JSON的新闻,通过分析JSON来收获当中的音信。
流程就像url地址一样,分为3步:

  查询全数品类内部参照他事他说加以考察音讯最大id,可用如下sql: 

  1. 获得频道列表。
    任务访谈
    http://fm.baidu.com/dev/api/?tn=channellist

    此间能够获取到独具的频段音信,如下:
    {“hash_code”:”ef54151ee31553c05329ac7e66aaedc4″,”channel_list”:
    [{“channel_id”:”public_tuijian_spring”,”channel_name”:”\u6f2b\u6b65\u6625\u5929″,”channel_order”:0,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:11},{“channel_id”:”public_tuijian_autumn”,”channel_name”:”\u79cb\u65e5\u79c1\u8bed”,”channel_order”:0,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:12},{“channel_id”:”public_tuijian_winter”,”channel_name”:”\u6e29\u6696\u51ac\u65e5″,”channel_order”:10101,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:10},{“channel_id”:”public_tuijian_rege”,”channel_name”:”\u70ed\u6b4c”,”channel_order”:10105,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:4,”source_id”:0,”pv_order”:1},{“channel_id”:”public_tuijian_ktv”,”channel_name”:”KTV\u91d1\u66f2″,”channel_order”:10106,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:2},{“channel_id”:”public_tuijian_billboard”,”channel_name”:”Billboard”,”channel_order”:10107,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:6},{“channel_id”:”public_tuijian_chengmingqu”,”channel_name”:”\u6210\u540d\u66f2″,”channel_order”:10108,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:3},{“channel_id”:”public_tuijian_wangluo”,”channel_name”:”\u7f51\u7edc\u6b4c\u66f2″,”channel_order”:10109,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:2,”source_id”:0,”pv_order”:4},{“channel_id”:”public_tuijian_kaiche”,”channel_name”:”\u5f00\u8f66″,”channel_order”:10110,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:7},{“channel_id”:”public_tuijian_yingshi”,”channel_name”:”\u5f71\u89c6″,”channel_order”:10113,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:8},{“channel_id”:”public_tuijian_suibiantingting”,”channel_name”:”\u968f\u4fbf\u542c\u542c”,”channel_order”:10114,”cate_id”:”tuijian”,”cate”:”\u63a8\u8350\u9891\u9053″,”cate_order”:1,”source_type”:1,”source_id”:0,”pv_order”:5},{“channel_id”:”public_shiguang_jingdianlaoge”,”channel_name”:”\u7ecf\u5178\u8001\u6b4c”,”channel_order”:10201,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:2,”source_id”:0,”pv_order”:1},{“channel_id”:”public_shiguang_70hou”,”channel_name”:”70\u540e”,”channel_order”:10202,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:1,”source_id”:0,”pv_order”:6},{“channel_id”:”public_shiguang_80hou”,”channel_name”:”80\u540e”,”channel_order”:10203,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:2,”source_id”:0,”pv_order”:2},{“channel_id”:”public_shiguang_90hou”,”channel_name”:”90\u540e”,”channel_order”:10204,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:2,”source_id”:0,”pv_order”:3},{“channel_id”:”public_shiguang_xinge”,”channel_name”:”\u706b\u7206\u65b0\u6b4c”,”channel_order”:10205,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:3,”source_id”:33,”pv_order”:4},{“channel_id”:”public_shiguang_erge”,”channel_name”:”\u513f\u6b4c”,”channel_order”:10206,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:1,”source_id”:0,”pv_order”:7},{“channel_id”:”public_shiguang_lvxing”,”channel_name”:”\u65c5\u884c”,”channel_order”:10208,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:2,”source_id”:0,”pv_order”:8},{“channel_id”:”public_shiguang_yedian”,”channel_name”:”\u591c\u5e97″,”channel_order”:10209,”cate_id”:”shiguang”,”cate”:”\u65f6\u5149\u9891\u9053″,”cate_order”:2,”source_type”:2,”source_id”:0,”pv_order”:5},{“channel_id”:”public_fengge_liuxing”,”channel_name”:”\u6d41\u884c”,”channel_order”:10301,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:1,”source_id”:0,”pv_order”:1},{“channel_id”:”public_fengge_yaogun”,”channel_name”:”\u6447\u6eda”,”channel_order”:10302,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:5},{“channel_id”:”public_fengge_minyao”,”channel_name”:”\u6c11\u8c23″,”channel_order”:10303,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:3,”source_id”:50,”pv_order”:8},{“channel_id”:”public_fengge_qingyinyue”,”channel_name”:”\u8f7b\u97f3\u4e50″,”channel_order”:10304,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:3},{“channel_id”:”public_fengge_xiaoqingxin”,”channel_name”:”\u5c0f\u6e05\u65b0″,”channel_order”:10305,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:4},{“channel_id”:”public_fengge_zhongguofeng”,”channel_name”:”\u4e2d\u56fd\u98ce”,”channel_order”:10306,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:7},{“channel_id”:”public_fengge_dj”,”channel_name”:”DJ\u821e\u66f2″,”channel_order”:10308,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:2},{“channel_id”:”public_fengge_dianyingyuansheng”,”channel_name”:”\u7535\u5f71″,”channel_order”:10309,”cate_id”:”fengge”,”cate”:”\u98ce\u683c\u9891\u9053″,”cate_order”:3,”source_type”:2,”source_id”:0,”pv_order”:6},{“channel_id”:”public_xinqing_qingsongjiari”,”channel_name”:”\u8f7b\u677e\u5047\u65e5″,”channel_order”:10401,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:1,”source_id”:0,”pv_order”:4},{“channel_id”:”public_xinqing_huankuai”,”channel_name”:”\u6b22\u5feb\u65cb\u5f8b”,”channel_order”:10402,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:1,”source_id”:0,”pv_order”:1},{“channel_id”:”public_xinqing_tianmi”,”channel_name”:”\u751c\u871c\u611f\u53d7″,”channel_order”:10403,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:1,”source_id”:0,”pv_order”:6},{“channel_id”:”public_xinqing_jimo”,”channel_name”:”\u5bc2\u5bde”,”channel_order”:10404,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:2,”source_id”:0,”pv_order”:7},{“channel_id”:”public_xinqing_qingge”,”channel_name”:”\u5355\u8eab\u60c5\u6b4c”,”channel_order”:10405,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:1,”source_id”:0,”pv_order”:8},{“channel_id”:”public_xinqing_shuhuan”,”channel_name”:”\u8212\u7f13\u8282\u594f”,”channel_order”:10406,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:1,”source_id”:0,”pv_order”:2},{“channel_id”:”public_xinqing_yonglanwuhou”,”channel_name”:”\u6175\u61d2\u5348\u540e”,”channel_order”:10407,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:3,”source_id”:15,”pv_order”:5},{“channel_id”:”public_xinqing_shanggan”,”channel_name”:”\u4f24\u611f”,”channel_order”:10408,”cate_id”:”xinqing”,”cate”:”\u5fc3\u60c5\u9891\u9053″,”cate_order”:4,”source_type”:2,”source_id”:0,”pv_order”:3},{“channel_id”:”public_yuzhong_huayu”,”channel_name”:”\u534e\u8bed”,”channel_order”:10501,”cate_id”:”yuzhong”,”cate”:”\u8bed\u79cd\u9891\u9053″,”cate_order”:5,”source_type”:1,”source_id”:0,”pv_order”:1},{“channel_id”:”public_yuzhong_oumei”,”channel_name”:”\u6b27\u7f8e”,”channel_order”:10502,”cate_id”:”yuzhong”,”cate”:”\u8bed\u79cd\u9891\u9053″,”cate_order”:5,”source_type”:1,”source_id”:0,”pv_order”:2},{“channel_id”:”public_yuzhong_riyu”,”channel_name”:”\u65e5\u8bed”,”channel_order”:10503,”cate_id”:”yuzhong”,”cate”:”\u8bed\u79cd\u9891\u9053″,”cate_order”:5,”source_type”:2,”source_id”:0,”pv_order”:3},{“channel_id”:”public_yuzhong_hanyu”,”channel_name”:”\u97e9\u8bed”,”channel_order”:10504,”cate_id”:”yuzhong”,”cate”:”\u8bed\u79cd\u9891\u9053″,”cate_order”:5,”source_type”:1,”source_id”:0,”pv_order”:4},{“channel_id”:”public_yuzhong_yueyu”,”channel_name”:”\u7ca4\u8bed”,”channel_order”:10505,”cate_id”:”yuzhong”,”cate”:”\u8bed\u79cd\u9891\u9053″,”cate_order”:5,”source_type”:1,”source_id”:0,”pv_order”:5}],”status”:0}

 select
max(id),type_id from msg_detail group by type_id; 

  • 获得歌曲列表。
    透过上述获取到的 channel_id 音讯加在
    http://fm.baidu.com/dev/api/?tn=playlist&format=json&id=
    后,便足以收获该频道的音乐消息。
    如访问:http://fm.baidu.com/dev/api/?tn=playlist&format=json&id=public\_yuzhong\_yueyu
    ,获取如下JSON
    {“hash_code”:”ef54151ee31553c05329ac7e66aaedc4″,”channel_id”:”public_yuzhong_yueyu”,”channel_name”:”\u7ca4\u8bed”,”list”:
    [{“id”:1039198,”type”:-1,”method”:0,”flow_mark”:0},{“id”:422954,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7343735,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2124665,”type”:-1,”method”:0,”flow_mark”:0},{“id”:219930,”type”:-1,”method”:0,”flow_mark”:0},{“id”:1424805,”type”:-1,”method”:0,”flow_mark”:0},{“id”:307171,”type”:-1,”method”:0,”flow_mark”:0},{“id”:10270415,”type”:-1,”method”:0,”flow_mark”:0},{“id”:273708,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7324399,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7319721,”type”:-1,”method”:0,”flow_mark”:0},{“id”:65545703,”type”:-1,”method”:0,”flow_mark”:0},{“id”:759408,”type”:-1,”method”:0,”flow_mark”:0},{“id”:1420738,”type”:-1,”method”:0,”flow_mark”:0},{“id”:338145,”type”:-1,”method”:0,”flow_mark”:0},{“id”:23165179,”type”:-1,”method”:0,”flow_mark”:0},{“id”:292002,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7325160,”type”:-1,”method”:0,”flow_mark”:0},{“id”:206460,”type”:-1,”method”:0,”flow_mark”:0},{“id”:302740,”type”:-1,”method”:0,”flow_mark”:0},{“id”:350571,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7382995,”type”:-1,”method”:0,”flow_mark”:0},{“id”:13757337,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7325428,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7317693,”type”:-1,”method”:0,”flow_mark”:0},{“id”:14962362,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2047054,”type”:-1,”method”:0,”flow_mark”:0},{“id”:229011,”type”:-1,”method”:0,”flow_mark”:0},{“id”:483664,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7344015,”type”:-1,”method”:0,”flow_mark”:0},{“id”:14962298,”type”:-1,”method”:0,”flow_mark”:0},{“id”:806049,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7314224,”type”:-1,”method”:0,”flow_mark”:0},{“id”:319168,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7319722,”type”:-1,”method”:0,”flow_mark”:0},{“id”:8276656,”type”:-1,”method”:0,”flow_mark”:0},{“id”:23165164,”type”:-1,”method”:0,”flow_mark”:0},{“id”:14441641,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7352950,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7315407,”type”:-1,”method”:0,”flow_mark”:0},{“id”:1000860,”type”:-1,”method”:0,”flow_mark”:0},{“id”:268353,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2124659,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7343428,”type”:-1,”method”:0,”flow_mark”:0},{“id”:5572508,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2047062,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7324907,”type”:-1,”method”:0,”flow_mark”:0},{“id”:220609,”type”:-1,”method”:0,”flow_mark”:0},{“id”:14879207,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7320720,”type”:-1,”method”:0,”flow_mark”:0},{“id”:65545705,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7315402,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2110947,”type”:-1,”method”:0,”flow_mark”:0},{“id”:350388,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2937956,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7282667,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7316029,”type”:-1,”method”:0,”flow_mark”:0},{“id”:341640,”type”:-1,”method”:0,”flow_mark”:0},{“id”:448036,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7326296,”type”:-1,”method”:0,”flow_mark”:0},{“id”:350506,”type”:-1,”method”:0,”flow_mark”:0},{“id”:16602812,”type”:-1,”method”:0,”flow_mark”:0},{“id”:23165287,”type”:-1,”method”:0,”flow_mark”:0},{“id”:5548132,”type”:-1,”method”:0,”flow_mark”:0},{“id”:339826,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7314946,”type”:-1,”method”:0,”flow_mark”:0},{“id”:960735,”type”:-1,”method”:0,”flow_mark”:0},{“id”:23165261,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7316045,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7344366,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7324948,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7321545,”type”:-1,”method”:0,”flow_mark”:0},{“id”:12340411,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7319724,”type”:-1,”method”:0,”flow_mark”:0},{“id”:14949057,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7312965,”type”:-1,”method”:0,”flow_mark”:0},{“id”:479911,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7343489,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2088695,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2124656,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7315406,”type”:-1,”method”:0,”flow_mark”:0},{“id”:400175,”type”:-1,”method”:0,”flow_mark”:0},{“id”:1080706,”type”:-1,”method”:0,”flow_mark”:0},{“id”:399393,”type”:-1,”method”:0,”flow_mark”:0},{“id”:300216,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7312969,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7382982,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7320709,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7313025,”type”:-1,”method”:0,”flow_mark”:0},{“id”:287183,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7312860,”type”:-1,”method”:0,”flow_mark”:0},{“id”:29013970,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7327371,”type”:-1,”method”:0,”flow_mark”:0},{“id”:913503,”type”:-1,”method”:0,”flow_mark”:0},{“id”:2129477,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7325117,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7319732,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7320719,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7316023,”type”:-1,”method”:0,”flow_mark”:0},{“id”:7325532,”type”:-1,”method”:0,”flow_mark”:0},{“id”:73149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  • 获得具体的歌曲新闻。
    一律,依据上述JSON获得 id 新闻丰裕
    http://music.baidu.com/data/music/fmlink?type=mp3&rate=320&songIds=
    便能够猎取某一首歌的现实音信。
    如访问:http://music.baidu.com/data/music/fmlink?type=mp3&rate=320&songIds=913503
    ,得到如下的json:
    {“errorCode”:22000,”data”:{“xcode”:”4496e58ee1d77dfb10372a4da22c77ae”,”songList”:[{“queryId”:”913503″,”songId”:913503,”songName”:”\u5915\u9633\u65e0\u9650\u597d”,”artistId”:”1077″,”artistName”:”\u9648\u5955\u8fc5″,”albumId”:689097,”albumName”:”U-87″,”songPicSmall”:”http://musicdata.baidu.com/data2/pic/88653138/88653138.jpg@s\_0,w\_90″,”songPicBig”:”http://musicdata.baidu.com/data2/pic/88653138/88653138.jpg@s\_0,w\_150″,”songPicRadio”:”http://musicdata.baidu.com/data2/pic/88653138/88653138.jpg@s\_0,w\_300″,”lrcLink”:”http://musicdata.baidu.com/data2/lrc/13982404/13982404.lrc”,”version”:””,”copyType”:0,”time”:244,”linkCode”:22000,”songLink”:”http://yinyueshiting.baidu.com/data2/music/136477439/913503140400320.mp3?xcode=4496e58ee1d77dfbd1fcd5f6c50b1ab0″,”showLink”:”http://yinyueshiting.baidu.com/data2/music/136477439/913503140400320.mp3?xcode=4496e58ee1d77dfbd1fcd5f6c50b1ab0″,”format”:”mp3″,”rate”:320,”size”:9773199,”relateStatus”:”0″,”resourceType”:”0″,”source”:”web”}]}}
    里头:songLink就是歌曲真实的在线可播放地址,还有任何非常多的音讯能够直接通过JSON上的Name音信看懂,就不一一赘述了。

 

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