Ios 在目标C中，如何列出AmazonS3存储桶中特定路径上的文件夹？

在阅读了Amazon之后，我似乎没有找到如何在Amazon S3存储桶中的特定路径上列出文件夹名称，我也环顾了StackOverflow，但没有幸运地回答我自己的问题。 我将把它贴在这里，希望它也能帮助其他人：）

这是我的代码：

// pass path as: @"backup/"
- (void)listAmazonFoldersAtPath:(NSString *)path
                     completion:(void (^)(BOOL success, NSMutableArray *filesArray))completionBlock
{

    NSMutableArray *collection = [[NSMutableArray alloc] init];

    AWSS3 *s3 = [AWSS3 defaultS3];

    AWSS3ListObjectsRequest *listObjectsRequest = [AWSS3ListObjectsRequest new];
    listObjectsRequest.prefix = path;
    listObjectsRequest.delimiter = @"/";

    listObjectsRequest.bucket = kAmazonS3Bucket;
    [[s3 listObjects:listObjectsRequest] continueWithBlock:^id(AWSTask *task) {
        if (task.error) {
            NSLog(@"listObjects failed: [%@]", task.error);
            completionBlock(NO, collection);
        } else {
            AWSS3ListObjectsOutput *listObjectsOutput = task.result;
            for (AWSS3CommonPrefix *s3ObjectPrefix in listObjectsOutput.commonPrefixes) {
                if(s3ObjectPrefix.prefix && s3ObjectPrefix.prefix.length > 0){
                    NSString *fileName = [[s3ObjectPrefix.prefix componentsSeparatedByString:@"/"] lastObject];
                    if (fileName && fileName.length > 0) {
                        [collection addObject:s3ObjectPrefix.prefix];
                    }
                }
            }

            completionBlock(YES, collection);
            NSLog(@"Current folders: %@", collection);

        }
        return nil;
    }];

}

我希望它能帮助别人

注意：如果您还想列出子文件夹，请随时对该行进行注释：

listObjectsRequest.delimiter = @"/";

这是我的代码：

// pass path as: @"backup/"
- (void)listAmazonFoldersAtPath:(NSString *)path
                     completion:(void (^)(BOOL success, NSMutableArray *filesArray))completionBlock
{

    NSMutableArray *collection = [[NSMutableArray alloc] init];

    AWSS3 *s3 = [AWSS3 defaultS3];

    AWSS3ListObjectsRequest *listObjectsRequest = [AWSS3ListObjectsRequest new];
    listObjectsRequest.prefix = path;
    listObjectsRequest.delimiter = @"/";

    listObjectsRequest.bucket = kAmazonS3Bucket;
    [[s3 listObjects:listObjectsRequest] continueWithBlock:^id(AWSTask *task) {
        if (task.error) {
            NSLog(@"listObjects failed: [%@]", task.error);
            completionBlock(NO, collection);
        } else {
            AWSS3ListObjectsOutput *listObjectsOutput = task.result;
            for (AWSS3CommonPrefix *s3ObjectPrefix in listObjectsOutput.commonPrefixes) {
                if(s3ObjectPrefix.prefix && s3ObjectPrefix.prefix.length > 0){
                    NSString *fileName = [[s3ObjectPrefix.prefix componentsSeparatedByString:@"/"] lastObject];
                    if (fileName && fileName.length > 0) {
                        [collection addObject:s3ObjectPrefix.prefix];
                    }
                }
            }

            completionBlock(YES, collection);
            NSLog(@"Current folders: %@", collection);

        }
        return nil;
    }];

}

我希望它能帮助别人

注意：如果您还想列出子文件夹，请随时对该行进行注释：

listObjectsRequest.delimiter = @"/";