如何在Golang中处理外部API调用错误_Golang 外部API错误处理实践

resp, err := http.Get("https://api.example.com/data")
if err != nil {
    log.Printf("请求失败: %v", err)
    return
}
defer resp.Body.Close()
<p>if resp.StatusCode < 200 || resp.StatusCode >= 300 {
log.Printf("API返回错误状态码: %d", resp.StatusCode)
return
}

type APIError struct {
    StatusCode int
    Message    string
    Endpoint   string
}
<p>func (e *APIError) Error() string {
return fmt.Sprintf("API调用失败 [%d] %s (%s)", e.StatusCode, e.Message, e.Endpoint)
}

if resp.StatusCode != http.StatusOK {
    return nil, &APIError{
        StatusCode: resp.StatusCode,
        Message:    "请求未成功",
        Endpoint:   "https://api.example.com/data",
    }
}

client := &http.Client{
    Timeout: 10 * time.Second,
}

var resp *http.Response
var err error
for i := 0; i < 3; i++ {
    resp, err = client.Get(url)
    if err == nil && resp.StatusCode == http.StatusOK {
        break
    }
    time.Sleep(1 * time.Second)
}
if err != nil {
    return err
}
if resp.StatusCode != http.StatusOK {
    // 返回自定义API错误
}

logger.Info("API调用完成",
    zap.String("url", url),
    zap.Int("status", resp.StatusCode),
    zap.Duration("duration", time.Since(start)),
)