搭建Go语言的ORM框架Gorm的具体步骤(从Java到go)

go version

go version go1.19.1 darwin/arm64

go get -u gorm.io/gorm

//mysql
go get -u gorm.io/driver/mysql
//sqlite
go get -u gorm.io/driver/sqlite
//sqlserver
go get -u gorm.io/driver/sqlserver
//clickhouse
go get -u gorm.io/driver/clickhouse

package db

import (
	"fmt"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
)
var DB *gorm.DB

func InitGormDB() (err error) {
	dsn := "user:pwd@tcp(127.0.0.1:3306)/dbname?charset=utf8mb4&parseTime=True&loc=Local"
	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		fmt.Printf("数据库连接失败：%v\n", err)
	} else {
		fmt.Printf("数据库连接成功\n")
		DB = db
	}
	return err
}

package main

import (
	"fullstars/src/common/db"
)

func main() {

	db.InitGormDB()

}

CREATE TABLE `config`  (
  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
  `type` varchar(16) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL COMMENT '类型',
  `key` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
  `value` varchar(2000) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NOT NULL,
  `createtime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
  `modifytime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新时间',
  `deleteflag` tinyint(3) NOT NULL DEFAULT 0 COMMENT '逻辑删除标识',
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 4 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Dynamic;

type Config struct {
	ID         int
	TYPE       string
	KEY        string
	VALUE      string
	CREATETIME time.Time
	MODIFYTIME time.Time
	DELETEFLAG int
}

func (Config) TableName() string {
	return "config"
}

package config

import (
	"fullstars/src/common/db"
)

func ConfigService() {
	var configs []Config
	db.DB.Debug().Find(&configs)

	var config Config
	db.DB.Debug().Where("id = ?", 2).Find(&config)
}

package main

import (
	"fullstars/src/common/db"
)

func main() {
	db.InitGormDB()
	config.ConfigService()
}