Go语言【开发】加载JSON配置文件

JSON配置加载

辅助网址，JSON转结构体对应 http://json2struct.mervine.net/

从JSON文件中加载配置到全局变量中

配置文件  config.json

{
  "HTTP服务地址": "IP地址",
  "host1": "10.45.151.75",

  "HTTP服务端口": "监听端口",
  "port1": 8080,

  "数据库配置": "从数据库中读取信息",
  "dbConfig": {
    "host":"10.45.151.1",
    "port" : 3306,
    "db" : "pbx",
    "user" : "remote",
    "passwd" : "tx_1234abc"
  },

  "rabbitmqConfig": {
    "host":"10.45.151.75",
    "port" : 5672,
    "vhost" : "/",
    "user" : "remote",
    "passwd" : "tx_1234abc"
  }

}

配置初始化包 Config.go

package main

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

type http struct {
	Host string `json:"host1"`
	Port int `json:"port1"`
}

type db struct {
	Host string `json:"host"`
	Port int `json:"port"`
	Db string `json:"db"`
	User string `json:"user"`
	Passwd string `json:"passwd"`
}

type amqp struct {
	Host string `json:"host"`
	Port int `json:"port"`
	Vhost string `json:"vhost"`
	User string `json:"user"`
	Passwd string `json:"passwd"`
}

type baseConfig struct {
	http
	db `json:"dbConfig"`
	amqp `json:"rabbitmqConfig"`
}

var (
	HttpConfig *http
	DBConfig *db
	AmqpConfig *amqp
)

func InitConfig(filename string) (err error) {
	var (
		content []byte
		conf baseConfig
	)

	if content, err = ioutil.ReadFile(filename); err != nil {
		fmt.Println(err)
		return
	}

	if err = json.Unmarshal(content, &conf); err != nil {
		fmt.Println(err)
		return
	}

	HttpConfig = &conf.http
	DBConfig = &conf.db
	AmqpConfig = &conf.amqp
	return
}

　　

入口   main.go

package main

import "fmt"

//import "fmt"

func main() {
	err := InitConfig("c:/Users/9999/go/src/go_calltask/config.json")
	if err != nil{
		return
	}
	// 分别打印http db rabbitmq配置
	fmt.Println(HttpConfig.Host)
	fmt.Println(DBConfig.Port)
	fmt.Println(AmqpConfig.Vhost)
}
//10.45.151.75
//3306
///