cos-cpp-sdk-v5/demo/bucket_op_demo/head_bucket_demo.cpp

#include <stdlib.h>
#include <sys/stat.h>

#include <iostream>
#include <map>
#include <string>
#include <thread>
#include <vector>

#include "cos_api.h"
#include "cos_sys_config.h"
#include "util/auth_tool.h"

/**
 * 本样例演示了如何使用 COS C++ SDK 进行存储桶检索和判断是否存在
 */
using namespace qcloud_cos;

uint64_t appid = 12500000000;
std::string tmp_secret_id = "AKIDXXXXXXXX";
std::string tmp_secret_key = "1A2Z3YYYYYYYYYY";
std::string region = "ap-guangzhou";
std::string bucket_name = "examplebucket-12500000000";
std::string tmp_token = "token";

/*
 * 本方法包含调用是否正常的判断，和请求结果的输出
 * 可通过本方法判断是否请求成功，并输出结果信息
 */
void PrintResult(const qcloud_cos::CosResult& result, const qcloud_cos::BaseResp& resp) {
    if (result.IsSucc()) {
        std::cout << "Request Succ." << std::endl;
        std::cout << resp.DebugString() << std::endl;
    } else {
        std::cout << "ErrorMsg=" << result.GetErrorMsg() << std::endl;
        std::cout << "HttpStatus=" << result.GetHttpStatus() << std::endl;
        std::cout << "ErrorCode=" << result.GetErrorCode() << std::endl;
        std::cout << "ErrorMsg=" << result.GetErrorMsg() << std::endl;
        std::cout << "ResourceAddr=" << result.GetResourceAddr() << std::endl;
        std::cout << "XCosRequestId=" << result.GetXCosRequestId() << std::endl;
        std::cout << "XCosTraceId=" << result.GetXCosTraceId() << std::endl;
    }
}

/*
 * 通过参数形式初始化 CosAPI 对象
 */
qcloud_cos::CosAPI InitCosAPI() {
    qcloud_cos::CosConfig config(appid, tmp_secret_id, tmp_secret_key, region);
    config.SetTmpToken(tmp_token);  // 推荐使用临时密钥初始化 CosAPI 对象, 如果您使用永久密钥初始化 CosAPI 对象，请注释
    qcloud_cos::CosAPI cos_tmp(config);
    return cos_tmp;
}

void HeadBucket(qcloud_cos::CosAPI& cos) {
  qcloud_cos::HeadBucketReq req(bucket_name);
  qcloud_cos::HeadBucketResp resp;
  qcloud_cos::CosResult result = cos.HeadBucket(req, &resp);

  std::cout << "===================HeadBucketResponse====================="
            << std::endl;
  PrintResult(result, resp);
  std::cout << "=========================================================="
            << std::endl;
}

void IsBucketExist(qcloud_cos::CosAPI& cos) {
  std::cout << "===================IsBucketExist====================="
            << std::endl;
  std::cout << (cos.IsBucketExist("abcdefg") ? "true" : "false") << std::endl; 
  std::cout << (cos.IsBucketExist(bucket_name) ? "true" : "false") << std::endl;
  std::cout
      << "===================================================================="
      << std::endl;
}


int main() {
    qcloud_cos::CosAPI cos = InitCosAPI();
    CosSysConfig::SetLogLevel((LOG_LEVEL)COS_LOG_ERR);
    HeadBucket(cos);
    IsBucketExist(cos);
}