读取的文件

vim /root/.my.cnf

[client]
host     = 10.6.8.238
port     = 3306
user     = root
password = mysql

[slave]
host=10.6.8.238
port=23306
user=root
password=mysql

代码

package collector

import (
    "fmt"
    "os"
    "path/filepath"
    "strings"
    "testing"

    "gopkg.in/ini.v1"
)

// 包 ini 在 Go 中提供 INI 文件读取和写入功能。
func TestIni(t *testing.T) {
    var configMycnf = "/root/.my.cnf"
    opts := ini.LoadOptions{
        // MySQL ini file can have boolean keys.
        AllowBooleanKeys: true,
    }
    cfg, err1 := ini.LoadSources(opts, configMycnf)
    if err1 == nil {
        fmt.Printf("slave含有host：%v \n", cfg.Section("slave").Key("host").String())
        fmt.Printf("slave含有port：%v \n", cfg.Section("slave").Key("port").MustInt())
        fmt.Printf("slave含有user：%v \n", cfg.Section("slave").Key("user").String())
        fmt.Printf("slave含有password：%v \n", cfg.Section("slave").Key("password").String())
        // 新增并保存
        cfg.Section("new_section").Key("new_key").SetValue("new_key_value")
        cfg.SaveTo("/root/lys.cnf")
    }
}

输出的文件

[root@lys-mysql ~]# cat lys.cnf
[client]
host     = 10.6.8.238
port     = 3306
user     = root
password = mysql

[slave]
host     = 10.6.8.238
port     = 23306
user     = root
password = mysql

[new_section]
new_key = new_key_value