问iOS亚马逊认知S3元数据文件名

EN

-(NSString *)getFileMetaData:(NSString *)fKey
{
__block NSString *fName = @"";

AWSS3 *s3 = [AWSS3 defaultS3];
AWSS3HeadObjectRequest *request = [AWSS3HeadObjectRequest new];
request.bucket = @"myS3BucketName";
request.key = fKey;

[[[s3 headObject:request] continueWithBlock:^id _Nullable(AWSTask<AWSS3HeadObjectOutput *> * _Nonnull task)
{
    if(task.result.metadata != nil)
    {
        //Do something with it...
    }
    else
    {
        //Handle no data
    }
    return nil;
}] waitUntilFinished];

return fName;
}