此接口用于追加写对象，通过 AppendObject 接口创建的对象类型为 Appendable Object，通过 PutObject 上传的对象类型为 Normal Object。

示例代码 #

如下代码展示如何追加写对象到目标桶中。

// 从STS服务获取的临时访问密钥和安全令牌（AccessKey、SecretKey、SecurityToken）
TOSCredential *credential = [[TOSCredential alloc] initWithAccessKey:@"accesskey" secretKey:@"secretkey" securityToken:@"securityToken"];
TOSEndpoint *tosEndpoint = [[TOSEndpoint alloc] initWithURLString:@"endpoint" withRegion:@"region"];
TOSClientConfiguration *config = [[TOSClientConfiguration alloc] initWithEndpoint:tosEndpoint credential:credential];
TOSClient *client = [[TOSClient alloc] initWithConfiguration:config];

TOSAppendObjectInput *append = [TOSAppendObjectInput new];
append.tosBucket = @"bucket-name";
append.tosKey = @"object-name";
append.tosOffset = 0;
append.tosContent = your_data; // NSData
TOSTask *task = [client putObjectFromFile:append];
[task continueWithBlock:^id(TOSTask *task) {
    if (!task.error) {
        NSLog(@"Append object success.");
        TOSPutObjectFromFileOutput *output = task.result;
    } else {
        NSLog(@"Append object failed, error: %@" ,task.error);
    }
    return nil;
}];