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Android上传图片到GCS
EN

Stack Overflow用户
提问于 2013-08-02 02:56:24
回答 6查看 20.6K关注 0票数 23

我正在尝试从Android直接将图像上传到Google云存储。但是API似乎不起作用。他们有一些与App引擎捆绑在一起的Java示例。我没有看到任何被证明可以在Android上工作的示例。

在Android上,我尝试使用json api上传图片。我可以上传图像对象,但它似乎已损坏。此外,生成身份验证令牌似乎也很棘手。

我现在对此感到震惊。这个世界上有没有人尝试过使用Java客户端或Json API从Android上传图像/视频并成功?有人能告诉我怎么走吗?使用Google的这个Storage api是非常令人失望的体验。如果有人这样做了,请分享你的经验。下面是我试图使用GCS的JSON API时在Android上尝试的代码。

代码语言:javascript
复制
private static String uploadFile(RichMedia media) {
    DefaultHttpClient client = new DefaultHttpClient();
    Bitmap bitmap = BitmapUtils.getBitmap(media.getLocalUrl());
    HttpPost post = new HttpPost(GCS_ROOT + media.getLocalUrl() + "_" + System.currentTimeMillis());
    if(media.getType() == RichMedia.RichMediaType.PICTURE) {
        post.setHeader("Content-Type", "image/jpeg");
    } else {
        post.setHeader("Content-Type", "video/mp4");
    }
    post.setHeader("Authorization", "AIzaSyCzdmCMwiMzl6LD7R2obF0xSgnnx5rEfeI");
    //post.setHeader("Content-Length", String.valueOf(bitmap.getByteCount()));
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
    byte[] byteArray = stream.toByteArray();

    try {
        post.setEntity(new StringEntity(new Gson().toJson(byteArray).toString()));
        HttpResponse response = client.execute(post);
        BufferedReader reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        String eachLine = null;
        StringBuilder builder = new StringBuilder();
        while ((eachLine = reader.readLine()) != null) {
            builder.append(eachLine);
        }
        L.d("response = " + builder.toString());
        JSONObject object = new JSONObject(builder.toString());
        String name = object.getString("name");
        return  name;
    } catch (IOException e) {
        L.print(e);
    } catch (JSONException e) {
        L.print(e);
    }
    return null;
}

我在这里遇到了两个问题。

  1. 上传到服务器的文件已损坏。这不是我上传的同一张图片。
  2. 授权密钥经常过期。在我的例子中,我使用的是gsutil生成的验证码。
EN

回答 6

Stack Overflow用户

回答已采纳

发布于 2013-09-02 17:55:08

由于没有人回答这个问题,让我更新一下我解决这个问题的方法。我最终关注了这个https://github.com/pliablematter/simple-cloud-storage项目。

我可以通过我的Android应用程序将图片/视频上传到GCS。

票数 16
EN

Stack Overflow用户

发布于 2014-11-09 14:26:28

Android修复:

Android Studio配置:

代码语言:javascript
复制
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile files('libs/android-support-v4.jar')
    compile files('google-play-services.jar')
    compile 'com.wu-man:android-oauth-client:0.0.3'
    compile 'com.google.apis:google-api-services-storage:v1-rev17-1.19.0'
    compile(group: 'com.google.api-client', name: 'google-api-client', version:'1.19.0'){
        exclude(group: 'com.google.guava', module: 'guava-jdk5')
    }
}

AndroidManifiest:

代码语言:javascript
复制
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"></uses-permission>

主要实现:

代码语言:javascript
复制
    new AsyncTask(){

        @Override
        protected Object doInBackground(Object[] params) {
            try {

                CloudStorage.uploadFile("bucket-xxx", "photo.jpg");

            } catch (Exception e) {
                if(DEBUG)Log.d(TAG, "Exception: "+e.getMessage());
                e.printStackTrace();
            }
            return null;
        }
    }.execute();

CloudStorage类:

代码语言:javascript
复制
import com.google.api.services.storage.Storage;
import com.google.api.services.storage.StorageScopes;
import com.google.api.services.storage.model.Bucket;
import com.google.api.services.storage.model.StorageObject;

public static void uploadFile(String bucketName, String filePath)throws Exception {

    Storage storage = getStorage();
    StorageObject object = new StorageObject();
    object.setBucket(bucketName);
    File sdcard = Environment.getExternalStorageDirectory();
    File file = new File(sdcard,filePath);

    InputStream stream = new FileInputStream(file);

    try {
        String contentType = URLConnection.guessContentTypeFromStream(stream);
        InputStreamContent content = new InputStreamContent(contentType,stream);

        Storage.Objects.Insert insert = storage.objects().insert(bucketName, null, content);
        insert.setName(file.getName());
        insert.execute();

    } finally {
        stream.close();
    }
}

private static Storage getStorage() throws Exception {

    if (storage == null) {
        HttpTransport httpTransport = new NetHttpTransport();
        JsonFactory jsonFactory = new JacksonFactory();
        List<String> scopes = new ArrayList<String>();
        scopes.add(StorageScopes.DEVSTORAGE_FULL_CONTROL);

        Credential credential = new GoogleCredential.Builder()
                .setTransport(httpTransport)
                .setJsonFactory(jsonFactory)
                .setServiceAccountId(ACCOUNT_ID_PROPERTY) //Email                           
                .setServiceAccountPrivateKeyFromP12File(getTempPkc12File())
                .setServiceAccountScopes(scopes).build();

        storage = new Storage.Builder(httpTransport, jsonFactory,
            credential).setApplicationName(APPLICATION_NAME_PROPERTY)
            .build();
    }

    return storage;
}

private static File getTempPkc12File() throws IOException {
    // xxx.p12 export from google API console
    InputStream pkc12Stream = AppData.getInstance().getAssets().open("xxx.p12");
    File tempPkc12File = File.createTempFile("temp_pkc12_file", "p12");
    OutputStream tempFileStream = new FileOutputStream(tempPkc12File);

    int read = 0;
    byte[] bytes = new byte[1024];
    while ((read = pkc12Stream.read(bytes)) != -1) {
        tempFileStream.write(bytes, 0, read);
    }
    return tempPkc12File;
}
票数 8
EN

Stack Overflow用户

发布于 2014-03-25 03:22:04

这段代码对我来说非常适合直接从Android上传文件到GCS。

代码语言:javascript
复制
File file = new File(Environment.getExternalStorageDirectory(), fileName);

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(url);

        FileBody filebody = new FileBody(file,ContentType.create(mimeType), file.getName());

        MultipartEntityBuilder multipartEntity = MultipartEntityBuilder.create();        
        multipartEntity.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        multipartEntity.addPart("file", filebody);
        httppost.setEntity(multipartEntity.build());
        System.out.println( "executing request " + httppost.getRequestLine( ) );
        try {
            HttpResponse response = httpclient.execute( httppost );
            Log.i("response", response.getStatusLine().toString());
        } catch (ClientProtocolException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        httpclient.getConnectionManager( ).shutdown( );

MultipartEntityBuilder类没有包含在安卓标准库中,所以您需要下载httpclient并将其包含到您的项目中。

票数 3
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/18002293

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