go get github.com/Unknwon/goconfig

[mysql]
host = 127.0.0.1
port = 3306
; 用戶(hù)名
user = root
# 密碼
password = root
db_name : blog
max_idle : 2
max_conn : 10
[array]
course = java,go,python

package main

import (
	"errors"
	"fmt"
	"github.com/Unknwon/goconfig"
	"log"
	"os"
	"time"
)

func main() {

	currentPath, _ := os.Getwd()
	confPath := currentPath + "/conf/conf_goconfig.ini"

	_, err := os.Stat(confPath)
	if err != nil {
		panic(errors.New(fmt.Sprintf("file is not found %s", confPath)))

	}

	// 加載配置
	config, err := goconfig.LoadConfigFile(confPath)
	if err != nil {
		log.Fatal("讀取配置文件出錯(cuò):", err)
	}

	// 獲取 section
	mysqlConf, _ := config.GetSection("mysql")
	fmt.Println(mysqlConf)
	fmt.Println(mysqlConf["host"])

	// 獲取單個(gè)值
	user, _ := config.GetValue("mysql", "user")
	fmt.Println(user)

	// 獲取單個(gè)值并且指定類(lèi)型
	maxIdle, _ := config.Int("mysql", "max_idle")
	fmt.Println(maxIdle)

	// 獲取單個(gè)值，發(fā)生錯(cuò)誤時(shí)返回默認(rèn)值，沒(méi)有默認(rèn)值返回零值
	port := config.MustInt("mysql", "port", 3308)
	fmt.Println(port)

	// 重新設(shè)置值
	config.SetValue("mysql", "port", "3307")
	port = config.MustInt("mysql", "port", 3308)
	fmt.Println(port)

	// 刪除值
	config.DeleteKey("mysql", "port")
	port = config.MustInt("mysql", "port", 3308)
	fmt.Println(port)

	// 獲取注釋
	comments := config.GetKeyComments("mysql", "user")
	fmt.Println(comments)

	// 獲取數(shù)組，需要指定分隔符
	array := config.MustValueArray("array", "course", ",")
	fmt.Println(array)

	// 重新加載配置文件，一般對(duì)于web項(xiàng)目，改了配置文件希望能夠即使生效而不需要重啟應(yīng)用，可以對(duì)外提供刷新配置api
	// 修改password 為 root123值觀察值的變化
	for i := 0; i < 10; i++ {
		time.Sleep(time.Second * 3)
		_ = config.Reload()
		password, _ := config.GetValue("mysql", "password")
		fmt.Println(password)
	}
}