AWS SDK for iOSでS3にファイルのアップロード／ダウンロード

暫定版。

アップロード

- (void)uploadFile:(NSString*)filePath key:(NSString*)key {
    AmazonS3Client *s3 = [[AmazonS3Client alloc] initWithAccessKey:@"YOUR-ACCESS-KEY" withSecretKey:@"YOUR-SECRET-KEY"];
    S3PutObjectRequest *req = [[S3PutObjectRequestalloc] initWithKey:key inBucket:@"name.of.your.bucket"];
    req.filename = filePath;
    S3Response *res = [s3 putObject:req];
    [req release];
    [s3 release];
}

ダウンロード

- (void)downloadObjectWithKey:(NSString*)key toFile:(NSString*)filePath {
    AmazonS3Client *s3 = [[AmazonS3Client alloc] initWithAccessKey:@"YOUR-ACCESS-KEY" withSecretKey:@"YOUR-SECRET-KEY"];
    S3GetObjectRequest *req = [[S3GetObjectRequest alloc] initWithKey:key withBucket:@"name.of.your.bucket"];
    NSOutputStream *out = [[NSOutputStream alloc] initToFileAtPath:filePath append:NO];
    req.outputStream = out;
    [out open];
    @try {
        S3GetObjectResponse *res = [s3 getObject:req];
        if ([res httpStatusCode] == 200) {
            // ...
        } else {
            // ...
        }
    } 
    @catch (NSException *exception) {
    }
    @finally {
        [out close];
        [out release];
        [req release];
        [s3 release];
    }
}