如何在Golang中实现统一错误日志

type AppError struct {
    Code    int       `json:"code"`
    Message string    `json:"message"`
    Time    time.Time `json:"time"`
    Trace   string    `json:"trace,omitempty"`
}

func (e *AppError) Error() string {
    return fmt.Sprintf("[%d] %s at %s", e.Code, e.Message, e.Time.Format(time.RFC3339))
}

func NewAppError(code int, message string) *AppError {
    return &AppError{
        Code:    code,
        Message: message,
        Time:    time.Now(),
        Trace:   getTrace(), // 可选：runtime.Caller获取调用栈
    }
}

logger, _ := zap.NewProduction()
defer logger.Sync()

// 记录错误
logger.Error("operation failed",
    zap.Int("code", err.Code),
    zap.String("message", err.Message),
    zap.Time("time", err.Time),
    zap.String("trace", err.Trace),
)

func ErrorLogger() gin.HandlerFunc {
    return func(c *gin.Context) {
        c.Next() // 处理请求

        for _, err := range c.Errors {
            logger.Error("request error",
                zap.String("path", c.Request.URL.Path),
                zap.String("method", c.Request.Method),
                zap.String("error", err.Error()),
            )
        }
    }
}

c.JSON(500, gin.H{
    "success": false,
    "error":   err.Message,
    "code":    err.Code,
})