gin 配置文件

 一、配置信息：mysql.json

{
  "host":"localhost",
  "port":"3306",
  "user_name":"root",
  "password":"Qazwsx123",
  "database":"gin_project",
  "logo_mode":true
}

二、加载配置文件

package data_source

import (
	"encoding/json"
	"io/ioutil"
	"os"
)

type MysqlConf struct {
	Host     string `json:"host"`
	Port     string `json:"port"`
	UserName string `json:"user_name"`
	Password string `json:"password"`
	DataBase string `json:"database"`
	LogoMode bool   `json:"logo_mode"`
}

func LoadMysqlConf() *MysqlConf {

	mysql_conf := MysqlConf{}

	file, err := os.Open("conf/mysql_conf.json")

	if err != nil {
		panic(err)
	}

	defer file.Close()

	byte_data, err2 := ioutil.ReadAll(file)

	if err2 != nil {
		panic(err2)
	}

	err3 := json.Unmarshal(byte_data, &mysql_conf)

	if err3 != nil {
		panic(err3)
	}

	return &mysql_conf

}

三、使用配置信息

package data_source

import (
	"github.com/jinzhu/gorm"
	"gin_project/models"
	_ "github.com/jinzhu/gorm/dialects/mysql"
	"fmt"
)

var Db *gorm.DB
var err error


func init() {

	mysql_conf := LoadMysqlConf()

	logo_mode := mysql_conf.LogoMode

	data_source := fmt.Sprintf("%s:%[email protected](%s:%s)/%s?charset=utf8&parseTime=true&loc=Local",
				mysql_conf.UserName,
				mysql_conf.Password,
				mysql_conf.Host,
				mysql_conf.Port,
				mysql_conf.DataBase,


		)


	Db,err = gorm.Open("mysql",data_source)

	if err != nil {
		panic(err)
	}

	Db.LogMode(logo_mode)


	Db.DB().SetMaxOpenConns(100) // 最大连接数
	Db.DB().SetMaxIdleConns(50) // 最大空闲数

	Db.AutoMigrate(&models.User{})
}

四 使用 在main.go 引入

_ "gin_project/data_source"