Object Storage Service:Determine whether an object exists

Usage notes

• Before you run the sample code in this topic, you must create an OSSClient instance by using methods such as using a custom domain name or Security Token Service (STS). For more information, see Initialization.

  Note

  The region of the bucket is determined by the endpoint specified for initialization.

Sample code

The following code provides an example on how to determine whether an object exists:

NSError * error = nil;
BOOL isExist = [client doesObjectExistInBucket:@"examplebucket" objectKey:@"file" error:&error];
if (!error) {
    if(isExist) {
        NSLog(@"File exists.");
    } else {
        NSLog(@"File not exists.");
    }
} else {
    NSLog(@"Error!");
}