在Android上使用酷狗歌詞API

參考自http://blog.csdn.net/u010752082/article/details/50810190

代碼先貼出來：

public void searchLyric(){
    final String name = musicName.getText().toString();
    final String duration = musicDuration.getText().toString();
    new Thread(new Runnable() {
        @Override
        public void run() {
            try {
                //建立連接 -- 查找歌曲
                String urlStr = "http://lyrics.kugou.com/search?ver=1&man=yes&client=pc&keyword=" + name + "&duration=" + duration + "&hash=";
                URL url = new URL(encodeUrl(urlStr));  //字符串進行URL編碼
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.connect();

                //讀取流 -- JSON歌曲列表
                InputStream input = conn.getInputStream();
                String res = FileUtil.formatStreamToString(input);  //流轉字符串

                JSONObject json1 = new JSONObject(res);  //字符串讀取為JSON
                JSONArray json2 = json1.getJSONArray("candidates");
                JSONObject json3 = json2.getJSONObject(0);

                //建立連接 -- 查找歌詞
                urlStr = "http://lyrics.kugou.com/download?ver=1&client=pc&id=" + json3.get("id") + "&accesskey=" + json3.get("accesskey") + "&fmt=lrc&charset=utf8";
                url = new URL(encodeUrl(urlStr));
                conn = (HttpURLConnection) url.openConnection();
                conn.connect();

                //讀取流 -- 歌詞
                input = conn.getInputStream();
                res = FileUtil.formatStreamToString(input);
                JSONObject json4 = new JSONObject(res);

                //獲取歌詞base64，並進行解碼
                String base64 = json4.getString("content");
                final String lyric = Base64.getFromBASE64(base64);

                Log.i("lyric", lyric);

                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        showLyric.setText(lyric);
                    }
                });

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }).start();
}

首先說明一下，要搜索到歌詞，需要先搜索歌曲，得到歌曲對應的id和accesskey后才能進行歌詞的獲取。

那么我們先從搜索歌曲的URL開始說起：

String urlStr = "http://lyrics.kugou.com/search?ver=1&man=yes&client=pc&keyword=" + name + "&duration=" + duration + "&hash=";

其中的name為搜索條件，最好為文件名或者“歌手 - 標題”的形式，搜索比較准確。duration為歌曲時長，單位毫秒。

記得要先對字符串鏈接進行URL編碼。

讀取流並轉換為字符串：

InputStream input = conn.getInputStream();
String res = FileUtil.formatStreamToString(input);  //流轉字符串

接收到的數據res是這樣的：

{"ugccandidates":[],
        "ugc":0,
        "info":"OK",
        "status":200,
        "proposal":"22422076",
        "keyword":"Impossible",
        "candidates":[
            {
                "soundname":"", "krctype":2, "nickname":"", "originame":"", "accesskey":
                "C3D2BF9DD8A47A3FFB622B660D820B8D", "parinfo":[],"origiuid":"0", "score":60, "hitlayer":
                7, "duration":227000, "sounduid":"0", "song":"Impossible", "uid":"410927974", "transuid":
                "0", "transname":"", "adjust":0, "id":"22422076", "singer":"Måns Zelmerlöw", "language":""
            },

            {
                "soundname":"", "krctype":2, "nickname":"", "originame":"", "accesskey":
                "F92BD21B377150B8F3C67B2A034D6FE0", "parinfo":[],"origiuid":"0", "score":50, "hitlayer":
                7, "duration":227000, "sounduid":"0", "song":"Impossible", "uid":"486959192", "transuid":
                "0", "transname":"", "adjust":0, "id":"19445996", "singer":"The Top Hits Band", "language":
                ""
            },

            {
                "soundname":"", "krctype":2, "nickname":"", "originame":"", "accesskey":
                "2B6A8E1CD4B59F475E28F2AF811F59E9", "parinfo":[],"origiuid":"0", "score":40, "hitlayer":
                7, "duration":226750, "sounduid":"0", "song":"Impossible", "uid":"410927974", "transuid":
                "0", "transname":"", "adjust":0, "id":"19201245", "singer":"Shontelle", "language":""
            },

            {
                "soundname":"", "krctype":2, "nickname":"", "originame":"", "accesskey":
                "D5B9AD83A10659CE2DAAD618C934F382", "parinfo":[],"origiuid":"0", "score":30, "hitlayer":
                7, "duration":227000, "sounduid":"0", "song":"Impossible", "uid":"486958479", "transuid":
                "0", "transname":"", "adjust":0, "id":"19160542", "singer":"The Top Hits Band", "language":
                ""
            },

            {
                "soundname":"", "krctype":2, "nickname":"", "originame":"", "accesskey":
                "27C664BC593E1B60D486E34AE479EFE7", "parinfo":[],"origiuid":"0", "score":20, "hitlayer":
                7, "duration":227000, "sounduid":"0", "song":"Impossible", "uid":"486953482", "transuid":
                "0", "transname":"", "adjust":0, "id":"18918409", "singer":"Tiffany Evans", "language":""
            }
        ]
    }

我們可以用new JSONObject()將字符串轉換為JSON對象，再取出candidates部分

JSONObject json1 = new JSONObject(res);  //字符串讀取為JSON
JSONArray json2 = json1.getJSONArray("candidates");

現在json2就是一個搜索到的歌曲集合了，我們一般取第一個結果，是比較精確的：

JSONObject json3 = json2.getJSONObject(0);

好的，現在我們已經獲取到了歌曲信息，接下來就是通過歌曲信息搜索歌詞。

搜索歌詞的URL需要兩個參數，id和accesskey，都可以從剛剛取到的歌曲信息json3中得到：

urlStr = "http://lyrics.kugou.com/download?ver=1&client=pc&id=" + json3.get("id") + "&accesskey=" + json3.get("accesskey") + "&fmt=lrc&charset=utf8";

進行連接后，我們就能獲取到歌詞的相關數據了：

其中content就是歌詞的內容，但是我們發現是經過base64編碼過的，我們需要對其進行解碼：

//讀取流 -- 歌詞
input = conn.getInputStream();
res = FileUtil.formatStreamToString(input);
JSONObject json4 = new JSONObject(res);

//獲取歌詞base64，並進行解碼
String base64 = json4.getString("content");
String lyric = Base64.getFromBASE64(base64);

最后lyric就是我們解碼后的歌詞了：

到這里基本就結束了。

服務器返回的值有可能是空的，由於時間關系在這里就不寫判斷了。

流轉String、字符串URL編碼、base64解碼都可以在網上找到，代碼比較多這里就不貼出來了。

 

 

 

candidates