拷贝对象

对象是存储数据的基本单元。对象由元信息（Object Meta），用户数据（Data）和文件名（Key）组成。对象由桶内部唯一的Key来标识。本文介绍如何拷贝对象。

接口定义：

- (void)replicateObject:(AWSS3ReplicateObjectRequest *)request
     completionHandler:(void (^)(AWSS3ReplicateObjectOutput *response, NSError *error))completionHandler

参数：

参数名	类型	说明
bucket	NSString	目的bucket
key	NSString	目的对象名
replicateSource	NSString	源bucket和对象名，使用/分割

代码示例：

- (void) copyObjectWithBucket:(NSString*)bucketName
                           key:(NSString*)keyName
                  sourceBucket:(NSString*)sourceBucketName
                     sourceKey:(NSString*)sourceKey {
    AWSS3ReplicateObjectRequest *request = [[AWSS3ReplicateObjectRequest alloc] init];
    request.bucket = bucketName;
    request.key = keyName;
    request.replicateSource = [NSString stringWithFormat:@"%@/%@", sourceBucketName, sourceKey];
    [self.s3 replicateObject:request completionHandler:^(AWSS3ReplicateObjectOutput * _Nullable response, NSError * _Nullable error) {
        if (error != nil) {
            NSLog(@"error: %@", error);
            return;
        }
    }];
}