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首先,明白阿里云OSS是个什么鬼
阿里云对象存储(Object Storage
Service,简称OSS),是阿里云对外提供的海量,安全,低成本,高可靠的云存储服务。用户可以通过调用API,在任何应用、任何时间、任何地点上传和下载数据,也可以通过用户Web控制台对数据进行简单的管理。OSS适合存放任意文件类型,适合各种网站、开发企业及开发者使用。
以上是官方解释。可以看出,OSS可以为我们在后台保存任何数据,强大无比。
步入正题:
首先你得有个阿里云账号(淘宝账号也可以哦,毕竟阿里账号都通用),然后登陆后进入管理控制台,并点击进去选择对象存储OSS,点击立即开通。
点击立即开通。认证过后,提示开通成功,然后进入OSS控制台。
到这里它会提示我们新建一个bucket,bucket就相当于我们的总仓库名称。填写名字,选择离自己所在地最近的区域,选择读写权限。
可以看到我们的bucket已经创建成功,下来点击object管理,进去之后,我们就可以上传文件了。
点击上传文件,上传成功后并刷新就可以看到我们的文件乖乖的呆在bucket里了。点击后面的获取地址就可以得到这个文件的(下载)访问路径了。
最后在上边我们可以看到一个accesskeys,点击进去,创建自己的accesskey,注意一定要保密好,“钥匙”只能你自己有!!!!
最后一步,将我们需要的jar包和sdk导入lib中。下面给出下载链接:
http://download.csdn.net/detail/u012534831/9501552
开始入手使用:
两个activity,两个xml。
第一个Mainactivity中,点击选择视频,并填写文件名(也就是object名),选择后点击上传,上传完成提示uploadsuccess,可以在OSS后台看到这个资源。再点击网络播放按钮,从后台下载这个视频并播放,同时实现了缓存到本地。
- public class MainActivity extends ActionBarActivity {
- private TextView tv,detail;
- private Button camerabutton,playbutton,selectvideo;
- private ProgressBar pb;
- private String path,objectname;
- private EditText filename;
- private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- findbyid();
- }
- private void findbyid() {
- // TODO Auto-generated method stub
- selectvideo= (Button) findViewById(R.id.camerabutton);
- detail= (TextView) findViewById(R.id.detail);
- tv = (TextView) findViewById(R.id.text);
- pb = (ProgressBar) findViewById(R.id.progressBar1);
- camerabutton = (Button) findViewById(R.id.camerabutton);
- playbutton= (Button) findViewById(R.id.playbutton);
- filename=(EditText) findViewById(R.id.filename);
-
- playbutton.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- // TODO Auto-generated method stub
- Intent intent = new Intent(MainActivity.this, PlayVideoActivity.class);
- //传过去一个object名
- intent.putExtra("objectname", objectname);
- //设置缓存目录
- intent.putExtra("cache",
- Environment.getExternalStorageDirectory().getAbsolutePath()
- + "/VideoCache/" + System.currentTimeMillis() + ".mp4");
- startActivity(intent);
- }
- });
- //上传按钮
- camerabutton.setOnClickListener(new OnClickListener() {
- @Override
- public void onClick(View v) {
- beginupload();
- }
- });
- }
- //从图库选择视频
- public void selectvideo(View view)
- {
- //跳到图库
- Intent intent = new Intent(Intent.ACTION_PICK);
- //选择的格式为视频,图库中就只显示视频(如果图片上传的话可以改为image/*,图库就只显示图片)
- intent.setType("video/*");
- // 开启一个带有返回值的Activity,请求码为PHOTO_REQUEST_GALLERY
- startActivityForResult(intent, PHOTO_REQUEST_GALLERY);
- }
- // /*
- // * 判断sdcard是否被挂载
- // */
- // private boolean hasSdcard() {
- // if (Environment.getExternalStorageState().equals(
- // Environment.MEDIA_MOUNTED)) {
- // return true;
- // } else {
- // return false;
- // }
- // }
- public void beginupload(){
- //通过填写文件名形成objectname,通过这个名字指定上传和下载的文件
- objectname=filename.getText().toString();
- if(objectname==null||objectname.equals("")){
- Toast.makeText(MainActivity.this, "文件名不能为空", 2000).show();
- return;
- }
- //填写自己的OSS外网域名
- String endpoint = "http://oss-cn-shanghai.aliyuncs.com";
- //填写明文accessKeyId和accessKeySecret,加密官网有
- OSSCredentialProvider credentialProvider = new OSSPlainTextAKSKCredentialProvider("**********", "********** ");
- OSS oss = new OSSClient(getApplicationContext(), endpoint, credentialProvider);
- //下面3个参数依次为bucket名,Object名,上传文件路径
- PutObjectRequest put = new PutObjectRequest("qhtmedia", objectname, path);
- if(path==null||path.equals("")){
- detail.setText("请选择视频!!!!");
- return;
- }
- tv.setText("正在上传中....");
- pb.setVisibility(View.VISIBLE);
- // 异步上传,可以设置进度回调
- put.setProgressCallback(new OSSProgressCallback<PutObjectRequest>() {
- @Override
- public void onProgress(PutObjectRequest request, long currentSize, long totalSize) {
- Log.d("PutObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
- }
- });
- @SuppressWarnings("rawtypes")
- OSSAsyncTask task = oss.asyncPutObject(put, new OSSCompletedCallback<PutObjectRequest, PutObjectResult>() {
- @Override
- public void onSuccess(PutObjectRequest request, PutObjectResult result) {
- Log.d("PutObject", "UploadSuccess");
- //回调为子线程,所以去UI线程更新UI
- runOnUiThread(new Runnable() {
- @Override
- public void run() {
- // TODO Auto-generated method stub
- tv.setText("UploadSuccess");
- pb.setVisibility(ProgressBar.INVISIBLE);
- }
- });
- }
- @Override
- public void onFailure(PutObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
- // 请求异常
- runOnUiThread(new Runnable() {
- @Override
- public void run() {
- // TODO Auto-generated method stub
- pb.setVisibility(ProgressBar.INVISIBLE);
- tv.setText("Uploadfile,localerror");
- }
- });
- if (clientExcepion != null) {
- // 本地异常如网络异常等
- clientExcepion.printStackTrace();
- }
- if (serviceException != null) {
- // 服务异常
- tv.setText("Uploadfile,servererror");
- Log.e("ErrorCode", serviceException.getErrorCode());
- Log.e("RequestId", serviceException.getRequestId());
- Log.e("HostId", serviceException.getHostId());
- Log.e("RawMessage", serviceException.getRawMessage());
- }
- }
- });
- // task.cancel(); // 可以取消任务
- // task.waitUntilFinished(); // 可以等待直到任务完成
- }
- @Override
- protected void onActivityResult(int requestCode, int resultCode, Intent data) {
- if (requestCode == PHOTO_REQUEST_GALLERY) {
- // 从相册返回的数据
- if (data != null) {
- // 得到视频的全路径
- Uri uri = data.getData();
- //转化为String路径
- getRealFilePath(MainActivity.this,uri);
- }
- }
- super.onActivityResult(requestCode, resultCode, data);
- }
- /* 下面是4.4后通过Uri获取路径以及文件名一种方法,比如得到的路径 /storage/emulated/0/video/20160422.3gp,
- 通过索引最后一个/就可以在String中截取了*/
- public void getRealFilePath( final Context context, final Uri uri ) {
- if ( null == uri ) return ;
- final String scheme = uri.getScheme();
- String data = null;
- if ( scheme == null )
- data = uri.getPath();
- else if ( ContentResolver.SCHEME_FILE.equals( scheme ) ) {
- data = uri.getPath();
- } else if ( ContentResolver.SCHEME_CONTENT.equals( scheme ) ) {
- Cursor cursor = context.getContentResolver().query( uri, new String[] { MediaStore.Images.ImageColumns.DATA }, null, null, null );
- if ( null != cursor ) {
- if ( cursor.moveToFirst() ) {
- int index = cursor.getColumnIndex( MediaStore.Images.ImageColumns.DATA );
- if ( index > -1 ) {
- data = cursor.getString( index );
- }
- }
- cursor.close();
- }
- }
- path=data;
- String b = path.substring(path.lastIndexOf("/") + 1, path.length());
- //最后的得到的b就是:20160422.3gp
- detail.setText(b);
- }
- }
- public class PlayVideoActivity extends ActionBarActivity {
- private VideoView mVideoView;
- private TextView tvcache;
- private String localUrl,objectname;
- private ProgressDialog progressDialog = null;
- // private String remoteUrl = "http://f02.v1.cn/transcode/14283194FLVSDT14-3.flv";
- // private static final int READY_BUFF = 600 * 1024*1000;//当视频缓存到达这个大小时开始播放
- // private static final int CACHE_BUFF = 500 * 1024;//当网络不好时建立一个动态缓存区,避免一卡一卡的播放
- // private boolean isready = false;
- private boolean iserror = false;
- private int errorCnt = 0;
- private int curPosition = 0;
- private long mediaLength = 0;
- private long readSize = 0;
- private InputStream inputStream;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.playvideo);
- findbyid();
- init();
- downloadview();
- }
-
-
-
- private void init() {
- // TODO Auto-generated method stub
- Intent intent = getIntent();
- objectname= intent.getStringExtra("objectname");
- this.localUrl = intent.getStringExtra("cache");
- mVideoView.setMediaController(new MediaController(this));
- // if (!URLUtil.isNetworkUrl(remoteUrl)) {
- // mVideoView.setVideoPath(remoteUrl);
- // mVideoView.start();
- // }
- mVideoView.setOnPreparedListener(new OnPreparedListener() {
- public void onPrepared(MediaPlayer mediaplayer) {
- dismissProgressDialog();
- mVideoView.seekTo(curPosition);
- mediaplayer.start();
- }
- });
-
-
- mVideoView.setOnCompletionListener(new OnCompletionListener() {
- public void onCompletion(MediaPlayer mediaplayer) {
- curPosition = 0;
- mVideoView.pause();
- }
- });
-
- mVideoView.setOnErrorListener(new OnErrorListener() {
- public boolean onError(MediaPlayer mediaplayer, int i, int j) {
- iserror = true;
- // errorCnt++;
- mVideoView.pause();
- showProgressDialog();
- return true;
- }
- });
- }
-
-
- private void showProgressDialog() {
- mHandler.post(new Runnable() {
- @Override
- public void run() {
- if (progressDialog == null) {
- progressDialog = ProgressDialog.show(PlayVideoActivity.this,
- "视频缓存", "正在努力加载中 ...", true, false);
- }
- }
- });
- }
-
- private void dismissProgressDialog() {
- mHandler.post(new Runnable() {
- @Override
- public void run() {
- if (progressDialog != null) {
- progressDialog.dismiss();
- progressDialog = null;
- }
- }
- });
- }
-
-
- private void downloadview() {
- // TODO Auto-generated method stub
- String endpoint = "http://oss-cn-shanghai.aliyuncs.com";
- // 明文设置secret的方式建议只在测试时使用,更多鉴权模式请参考官网
- OSSCredentialProvider credentialProvider = new OSSPlainTextAKSKCredentialProvider("**********", "**********");
- OSS oss = new OSSClient(getApplicationContext(), endpoint, credentialProvider);
- // 构造下载文件请求
- GetObjectRequest get = new GetObjectRequest("qhtmedia", objectname);
- @SuppressWarnings("rawtypes")
- OSSAsyncTask task = oss.asyncGetObject(get, new OSSCompletedCallback<GetObjectRequest, GetObjectResult>() {
- @Override
- public void onSuccess(GetObjectRequest request, GetObjectResult result) {
- // 请求成功回调
- Log.d("Content-Length", "" + result.getContentLength());
- //拿到输入流和文件长度
- inputStream = result.getObjectContent();
- mediaLength=result.getContentLength();
- showProgressDialog();
- byte[] buffer = new byte[2*2048];
- int len;
- FileOutputStream out = null;
- // long lastReadSize = 0;
- //建立本地缓存路径,视频缓存到这个目录
- if (localUrl == null) {
- localUrl = Environment.getExternalStorageDirectory()
- .getAbsolutePath()
- + "/VideoCache/"
- + System.currentTimeMillis() + ".mp4";
- }
- Log.d("localUrl: " , localUrl);
- File cacheFile = new File(localUrl);
- if (!cacheFile.exists()) {
- cacheFile.getParentFile().mkdirs();
- try {
- cacheFile.createNewFile();
- } catch (IOException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- }
- readSize = cacheFile.length();
- try {
- //将缓存的视频转换为流
- out = new FileOutputStream(cacheFile, true);
- } catch (FileNotFoundException e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- if (mediaLength == -1) {
- return;
- }
- mHandler.sendEmptyMessage(VIDEO_STATE_UPDATE);
- try {
- while ((len = inputStream.read(buffer)) != -1) {
- // 处理下载的数据
- try{
- out.write(buffer, 0, len);
- readSize += len;
- } catch (Exception e) {
- e.printStackTrace();
- }
- }
- mHandler.sendEmptyMessage(CACHE_VIDEO_END);
- } catch (IOException e) {
- e.printStackTrace();
- }
- finally {
- if (out != null) {
- try {
- out.close();
- } catch (IOException e) {
- }
- }
- if (inputStream != null) {
- try {
- inputStream.close();
- } catch (IOException e) {
- }
- }
- }
- }
- @Override
- public void onFailure(GetObjectRequest request, ClientException clientExcepion, ServiceException serviceException) {
- // 请求异常
- if (clientExcepion != null) {
- // 本地异常如网络异常等
- clientExcepion.printStackTrace();
- }
- if (serviceException != null) {
- // 服务异常
- Log.e("ErrorCode", serviceException.getErrorCode());
- Log.e("RequestId", serviceException.getRequestId());
- Log.e("HostId", serviceException.getHostId());
- Log.e("RawMessage", serviceException.getRawMessage());
- }
- }
-
- });
- // task.cancel(); // 可以取消任务
-
- // task.waitUntilFinished(); // 如果需要等待任务完成
- }
- private final static int VIDEO_STATE_UPDATE = 0;
- private final static int CACHE_VIDEO_END = 3;
-
- private final Handler mHandler = new Handler() {
- @Override
- public void handleMessage(Message msg) {
- switch (msg.what) {
- case VIDEO_STATE_UPDATE:
- double cachepercent = readSize * 100.00 / mediaLength * 1.0;
- String s = String.format("已缓存: [%.2f%%]", cachepercent);
- // }
- //缓存到达100%时开始播放
- if(cachepercent==100.0||cachepercent==100.00){
- mVideoView.setVideoPath(localUrl);
- mVideoView.start();
- String s1 = String.format("已缓存: [%.2f%%]", cachepercent);
- tvcache.setText(s1);
- return;
- }
- tvcache.setText(s);
- mHandler.sendEmptyMessageDelayed(VIDEO_STATE_UPDATE, 1000);
- break;
-
- case CACHE_VIDEO_END:
- if (iserror) {
- mVideoView.setVideoPath(localUrl);
- mVideoView.start();
- iserror = false;
- }
- break;
- }
- super.handleMessage(msg);
- }
- };
- private void findbyid() {
- // TODO Auto-generated method stub
- mVideoView = (VideoView) findViewById(R.id.bbvideoview);
- tvcache = (TextView) findViewById(R.id.tvcache);
- }
- }
代码中注释已经很清楚了。有问题的大家可以问我,最后附上源码地址:
https://github.com/qht1003077897/android-vedio-upload-and-download.git
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