Android 上传图片到阿里云 OSS

本篇博客主要介绍的是将本地图片上传到服务器的方法技巧

首先附上阿里云oss官网SDK介绍:点击打开链接

在app的build中配置oss :compile 'com.aliyun.dpa:oss-android-sdk:+'

技术相对简单，主要是将这些技术结合起来的例子并不多

首先先初始化oss对象

        // ACCESS_ID,ACCESS_KEY是在阿里云申请的
        OSSCredentialProvider credentialProvider = new OSSPlainTextAKSKCredentialProvider(ACCESS_ID, ACCESS_KEY);
        ClientConfiguration conf = new ClientConfiguration();
        conf.setConnectionTimeout(15 * 1000); // 连接超时，默认15秒
        conf.setSocketTimeout(15 * 1000); // socket超时，默认15秒
        conf.setMaxConcurrentRequest(8); // 最大并发请求数，默认5个
        conf.setMaxErrorRetry(2); // 失败后最大重试次数，默认2次

        // oss为全局变量，OSS_ENDPOINT是一个OSS区域地址
        oss = new OSSClient(getApplicationContext(), OSS_ENDPOINT, credentialProvider, conf);

oss上传图片分为同步和异步

同步的方法

// 构造上传请求
PutObjectRequest put = new PutObjectRequest("<bucketName>", "<objectKey>", "<uploadFilePath>");
// 文件元信息的设置是可选的
// ObjectMetadata metadata = new ObjectMetadata();
// metadata.setContentType("application/octet-stream"); // 设置content-type
// metadata.setContentMD5(BinaryUtil.calculateBase64Md5(uploadFilePath)); // 校验MD5
// put.setMetadata(metadata);
try {
    PutObjectResult putResult = oss.putObject(put);
    Log.d("PutObject", "UploadSuccess");
    Log.d("ETag", putResult.getETag());
    Log.d("RequestId", putResult.getRequestId());
} catch (ClientException e) {
    // 本地异常如网络异常等
    e.printStackTrace();
} catch (ServiceException e) {
    // 服务异常
    Log.e("RequestId", e.getRequestId());
    Log.e("ErrorCode", e.getErrorCode());
    Log.e("HostId", e.getHostId());
    Log.e("RawMessage", e.getRawMessage());
}

此处这个bucketName是在阿里云平台上配置的用来储存文件可以设置私有公有等属性

objectKey为文件的名字用来从平台上查询图片

FilePath为所选文件的uri路径

异步上传的方法

// 构造上传请求
PutObjectRequest put = new PutObjectRequest("<bucketName>", "<objectKey>", "<uploadFilePath>");
// 异步上传时可以设置进度回调
put.setProgressCallback(new OSSProgressCallback<PutObjectRequest>() {
    @Override
    public void onProgress(PutObjectRequest request, long currentSize, long totalSize) {
        Log.d("PutObject", "currentSize: " + currentSize + " totalSize: " + totalSize);
    }
});
OSSAsyncTask task = oss.asyncPutObject(put, new OSSCompletedCallback<PutObjectRequest, PutObjectResult>() {
    @Override
    public void onSuccess(PutObjectRequest request, PutObjectResult result) {
        Log.d("PutObject", "UploadSuccess");
        Log.d("ETag", result.getETag());
        Log.d("RequestId", result.getRequestId());
    }
    @Override
    public void onFailure(PutObjectRequest 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(); // 可以等待任务完成

一般上传成功时候客户端需要把文件的objectkey传给后台后台通过拼接然后把图片的url返回给我们

Android 上传图片到阿里云 OSS

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