Android,播放m3u8视频和下载m3u8的视频「建议收藏」

大家好，又见面了，我是你们的朋友全栈君。

因最近项目需要，研究了一个礼拜的m3u8。格式为m3u8的视频，其实是由多个.ts文件组成在一起播放的。下面有些资料是参考了网上的，总体概括下实现思路:

1.根据后台给出的m3u8的地址，实现播放,核心代码贴出：

try {
            String url = "http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8";//测试的m3u8地址
            //String url="http://devimages.apple.com/iphone/samples/bipbop/gear1/fileSequence0.ts";

            MediaPlayer mPlayer = new MediaPlayer();
            mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mPlayer.setDataSource(url);
            mPlayer.prepare(); // might take long! (for buffering, etc)

            mPlayer.setDisplay(surfaceHolder);    //设置显示视频显示在SurfaceView上 自己写个SurfaceHolder设置进去，不懂的可以上网查下这个如何设置

        } catch (IOException e) {
            e.printStackTrace();
        }

2.下载m3u8的视频。用浏览器打开m3u8的地址，会发现它是个下载地址，默认会把m3u8文件下载下来，右键以文本方式打开m3u8,会发现是一串有规律的文本文件：

  #EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=200000
gear1/prog_index.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=311111
gear2/prog_index.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=484444
gear3/prog_index.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1, BANDWIDTH=737777
gear4/prog_index.m3u8

m3u8的地址你都不能直接得到，我们用得到这个文件的链接地址的前半段http://devimages.apple.com/iphone/samples/bipbop/拼接上二级文件的相对地址gear1/prog_index.m3u8得到一个地址http://devimages.apple.com/iphone/samples/bipbop/gear1/prog_index.m3u8。
把此地址放到浏览器中，我们又会得到一个同样名为prog_index.m3u8的文件，内容如下：

#EXTM3U
#EXT-X-TARGETDURATION:10
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:10, no desc
fileSequence0.ts
#EXTINF:10, no desc
fileSequence1.ts
#EXTINF:10, no desc
fileSequence2.ts
#EXTINF:10, no desc
fileSequence3.ts
#EXTINF:10, no desc
fileSequence4.ts
#EXTINF:10, no desc
//省略后半部分

终于可以看到ts文件名了，我们还是没有得到真正的视频地址，老办法拼接后我们得到这么一段链http://devimages.apple.com/iphone/samples/bipbop/gear1/fileSequence179.ts，这就是真正的视频地址。
通过网络下载把所有的ts文件都下载下来，我写了个方法，在此贴出

package com.example.pc.videoplaydemo;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

/** * 给类提供访问网络的方法 * @author Administrator * */
public final class HttpConnect { 
   


    /*import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient;*/

    /** * 利用HttpClient获取指定的Url对应的HttpResponse对象 * @param url * @return */
    public static HttpResponse getResponseFromUrl(String url){
        try {
            HttpClient client = new DefaultHttpClient();
            HttpGet get = new HttpGet(url);
            HttpResponse response = client.execute(get);
            if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                return response;
            }
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }
        return null;
    }

    /** * 利用HttpClient获取指定Url对应的字符串对象 * @param url * @return */
    public static String getStringFromUrl(String url){
        try {
            StringBuilder result = new StringBuilder();
            HttpResponse res = HttpConnect.getResponseFromUrl(url);
            if(res != null){
                InputStream is = res.getEntity().getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(is));
                String line = "";
                while((line = reader.readLine()) != null){
                    result.append(line);
                }
                is.close();
                return result.toString();
            }
        } catch (Exception e) {
            // TODO: handle exception
        }

        return null;
    }
}

 /** * 解析m3u8,下载m3u8文件 * @param url 传入m3u8的地址 */
    public static void checkURlBTS(String url) {
        List<String> m3u8List = null;//m3u8地址集合
        List<String> tsList = null;//ts文件地址集合额
        HttpResponse res = HttpConnect.getResponseFromUrl(url);
        //HttpResponse res = HttpConnect.getResponseFromUrl(url);
        try {
            if (res != null) {
                m3u8List = new ArrayList<>();
                tsList=new ArrayList<>();
                InputStream in = res.getEntity().getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(in));
                String line = "";
                while ((line = reader.readLine()) != null) {
                    if (line.startsWith("#")) {
                    } else if (line.length() > 0 && line.endsWith(".m3u8")) {
                        String mUpM3u8URL=url.substring(0,url.lastIndexOf("/")+1);
                        m3u8List.add(mUpM3u8URL+line);
                    } else if (line.length() > 0 && line.endsWith(".ts")) {
  
  //判断该文件是否含有.ts文件
                        String mUpTSURL=url.substring(0,url.lastIndexOf("/")+1);
                        tsList.add(mUpTSURL+line);
                    }
                }
                in.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        if(m3u8List!=null&&m3u8List.size()!=0){
            for (int i=0;i<m3u8List.size();i++){
                checkURlBTS(m3u8List.get(i));//使用递归方式
            }
        }else if(tsList.size()!=0){
            //下载.ts文件 
            addLoad(tsList);   
        }
    }


        /** *添加下载的ts文件 */
        public static void addLoad(final List<String> urlList){
                    //for (int i=0;i<urlList.size();i++){ 
   
                    for (int i=0;i<5;i++){
                        Log.e("get(i)-->",""+urlList.get(i));
                        load(urlList.get(i));
                    }

        }


    /** * @Desciption: 读取任意文件，并将文件保存到手机SDCard */
    public static void load(String loadURL) {

        String path = loadURL.substring(loadURL.substring(0, loadURL.lastIndexOf("/")).lastIndexOf("/") + 1, loadURL.lastIndexOf("/"));
        String fileName = loadURL.substring(loadURL.lastIndexOf("/") + 1, loadURL.length());

        OutputStream output = null;
        try {
        //因ts文件非常之多，下载很缓慢，我们项目是使用了okHttp下载的，但为了方便大家，写了个httpclient下载
            URL url = new URL(loadURL);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            //取得inputStream，并将流中的信息写入SDCard

            String SDCard = Environment.getExternalStorageDirectory() + "";
            String pathName = SDCard + "/" + path + "/" + fileName;//文件存储路径

            File file = new File(pathName);
            InputStream input = conn.getInputStream();
            if (file.exists()) {
                return;
            } else {
                String dir = SDCard + "/" + path;
                new File(dir).mkdir();//新建文件夹
                file.createNewFile();//新建文件
                output = new FileOutputStream(file);
                //读取大文件
                byte[] buffer = new byte[4 * 1024];
                while (input.read(buffer) != -1) {
                    output.write(buffer);
                }
                output.flush();
                Log.e("success-->","come in");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (output!=null){
                    output.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }