本文介绍初始化客户端的示例代码。 ## 前提条件 * [已安装 Go SDK](/docs/84346/1899749) * [已获取 AKSK 信息](https://www.volcengine.com/docs/6291/65568) * [已获取地域信息](/docs/84346/1548469#ARJs24LA) ## 配置环境变量将长期访问凭证（AccessKey）硬编码到业务代码中会带来一定的安全风险，因此推荐您通过配置环境变量的方法管理访问凭证。本章节介绍不同操作系统下配置长期访问凭证的操作步骤。 ```mixin-react return ( export VOLCENGINE_ACCESS_KEY_SECRET= \`\`\` `}> ); ``` ## 初始化客户端使用如下代码初始化客户端。 ```Go package main import ( "fmt" "os" "github.com/volcengine/volcengine-go-sdk/service/cbr" "github.com/volcengine/volcengine-go-sdk/volcengine" "github.com/volcengine/volcengine-go-sdk/volcengine/credentials" "github.com/volcengine/volcengine-go-sdk/volcengine/session" ) func main() { var ( ak string sk string region string config *volcengine.Config sess *session.Session client *cbr.CBR resp *cbr.DescribeRegionsOutput err error ) ak = os.Getenv("VOLCENGINE_ACCESS_KEY_ID") sk = os.Getenv("VOLCENGINE_ACCESS_KEY_SECRET") region = "your region" config = volcengine.NewConfig(). WithCredentials(credentials.NewStaticCredentials(ak, sk, "")). WithRegion(region) sess, err = session.NewSession(config) if err != nil { panic(err) } client = cbr.New(sess) resp, err = client.DescribeRegions(&cbr.DescribeRegionsInput{}) if err != nil { panic(err) } fmt.Println("resp:%v", resp) } ```

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