详解Go中gin框架如何实现带颜色日志

package main

import (
	"github.com/gin-gonic/gin"
	"log"
	"net/http"
)

func main() {
	r := gin.Default()

	r.GET("/", func(c *gin.Context) {
		names := []string{"Hello", "World", ""}

		c.SecureJSON(http.StatusOK, names)

	})

  // 调用该函数，则禁用日志带颜色输出
	gin.DisableConsoleColor()
  
  //使用该函数，则强制日志带颜色输出，无论是在终端还是其他输出设备 
	gin.ForceConsoleColor()

	r.Run("127.0.0.1:8080")
}

Octal: \033
Decimal: 27
Hexadecimal: \x1B
Unicode: \u001b

const (
	green   = "\033[97;42m"
	white   = "\033[90;47m"
	yellow  = "\033[90;43m"
	red     = "\033[97;41m"
	blue    = "\033[97;44m"
	magenta = "\033[97;45m"
	cyan    = "\033[97;46m"
	reset   = "\033[0m"
)

// defaultLogFormatter is the default log format function Logger middleware uses.
var defaultLogFormatter = func(param LogFormatterParams) string {
	var statusColor, methodColor, resetColor string
	if param.IsOutputColor() {
		statusColor = param.StatusCodeColor()
		methodColor = param.MethodColor()
		resetColor = param.ResetColor()
	}

	if param.Latency > time.Minute {
		param.Latency = param.Latency.Truncate(time.Second)
	}
	return fmt.Sprintf("[GIN] %v |%s %3d %s| %13v | %15s |%s %-7s %s %#v\n%s",
		param.TimeStamp.Format("2006/01/02 - 15:04:05"),
		statusColor, param.StatusCode, resetColor,
		param.Latency,
		param.ClientIP,
		methodColor, param.Method, resetColor,
		param.Path,
		param.ErrorMessage,
	)
}

func Default() *Engine {
    debugPrintWARNINGDefault()
    engine := New()
    engine.Use(Logger(), Recovery())
    return engine
}