go 连接到数据库

package main 

import (
	"fmt"
	_ "github.com/go-sql-driver/mysql"
	"github.com/jmoiron/sqlx"
)

var DB *sqlx.DB

type DbInfo struct {
	Engine string
	User   string
	Pass   string
	Ip     string
	Port   string
	Table  string
}

func init () {

	db1 := DbInfo{
		"mysql",
		"root",
		"root",
		"127.0.0.1",
		"3306",
		"test",
	}

	database, err := sqlx.Open(db1.Engine, fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", db1.User, db1.Pass, db1.Ip, db1.Port, db1.Table))

	if err != nil {
		fmt.Println("mysql open failed, error:", err)
		return
	}

	DB = database
}

func main () {
	_, err := DB.Exec("insert into test (username, age) values (?, ?)", "lisi", "24")

	if err != nil {
		fmt.Println("mysql exec failed, error:", err)
		return
	}

}

　　使用第三方的包 sqlx, mysql ;获取：

go get github.com/jmoiron/sqlx

　　go get github.com/go-sql-driver/mysql

2.查询操作，更新操作

　　

package main

import (

    "fmt"

    _ "github.com/go-sql-driver/mysql"

"github.com/jmoiron/sqlx"

)

var DB *sqlx.DB

type Person struct {

    //对应数据库里面的字段名

    UserId int `db:"user_id"`

    Username string `db:"username"`

    Sex string       `db:"sex"` 

    Email string     `db:"email"`

}

func init () {

    database, err := sqlx.Open("mysql", "zhangjun:zhangjun123@tcp(127.0.0.1:3306)/test")

    if err != nil {

        fmt.Println("open mysql failed,error:", err)

        return

    }

    DB = database

}

func main () {

    var person []Person

    err := DB.Select(&person, "select user_id, username, sex, email from person where user_id = ?", 1)

    if err != nil {

        fmt.Println("select failed,error:", err)

        return

    }

    fmt.Println(person)

    //更新操作

    _, err = DB.Exec("update person set username = ? where user_id = ?", "lisi", 1)

    if err != nil {

        fmt.Println("update failed,error:", err)

        return

    }

}