1、主

package main

import (
	"fmt"
	"wbGo/configs"
)

type Dades struct {
	Id   int
	Name string
	Age  int
}

func main() {
	//连接数据库
	configs.BaseName("wbrj_sample")
	var data []Dades
	//查询
	configs.Db.Raw("select * from dade where id>=?", 1).Find(&data)
	fmt.Printf("%+v", data)
	//插入
	configs.Db.Table("dade").Create(map[string]interface{}{"name": "dade88"})
	//更新
	configs.Db.Table("dade").Where("id=?", 1).Updates(map[string]interface{}{"name": "dade99"})
	//configs.Db.Table("dade").Where("id=?", 9).Updates(&Dades{Name: "7777"})
	//dataMap := map[string]interface{}{"name": "111"}
	//configs.Db.Table("dade").Where("id=?", 9).Updates(dataMap)
	//给空
	//configs.Db.Table("dade").Where("id=?", 9).Updates(map[string]interface{}{"name": "666", "age": nil})
	//删除
	//configs.Db.Table("dade").Where("id=?", 1).Delete(&Dades{})
	configs.Db.Table("dade").Where("id=?", 2).Delete(map[string]interface{}{})
}

2、封装

package configs

import (
	"fmt"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
)

var Db *gorm.DB

// Mysql 方法返回一个 MysqlHandler 结构体
func BaseName(base string) {
	dsn := "root:root@tcp(127.0.0.1:3306)/" + base + "?charset=utf8mb4&parseTime=True&loc=Local"
	Dbs, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		//panic(err)
		fmt.Println("连接失败", err)
	}
	Db = Dbs
	fmt.Println("连接成功")
}

取值

package main

import (
	"fmt"
	"wbGo/configs"
)

type Dades struct {
	Id   int
	Name string
	Age  int
}

func main() {
	//连接数据库
	configs.BaseName("wbrj_sample")
	var data []Dades
	//查询
	configs.Db.Raw("select * from dade where id>=?", 1).Find(&data)
	fmt.Printf("%+v", data[0].Id)
	for _, v := range data {
		fmt.Println(v.Id)
	}
}