golang中使用mysql數據庫

安裝

安裝mysql驅動

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

安裝sqlx驅動

go get github.com/jmoiron/sqlx

 

一.插入數據庫

package main

import (
    "fmt"

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

type Person struct {
    UserId   int    `db:"user_id"`
    Username string `db:"username"`
    Sex      string `db:"sex"`
    Email    string `db:"email"`
}

var Db *sqlx.DB

func init() {
　　//與數據庫建立連接
    database, err := sqlx.Open("mysql", "root:123@tcp(127.0.0.1:3306)/test")
    if err != nil {
        fmt.Println("open mysql failed,", err)
        return
    }
    Db = database
}

func main() {
　　//事務操作
    conn, err := Db.Begin()
    if err != nil {
        return
    }
　　//插入數據
    r, err := conn.Exec("insert into person(username, sex, email)values(?, ?, ?)", "stu001", "man", "[e-mail]")
    if err != nil {
        fmt.Println("exec failed, ", err)
        return
    }
    id, err := r.LastInsertId()
    if err != nil {
        fmt.Println("exec failed, ", err)
　　　　//回滾
　　　　 conn.Rollback()
        return
    }

    fmt.Println("insert succ:", id)
　　//提交事務
    conn.Commit()
}

二.查詢數據庫

package main

import (
    "fmt"

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

type Person struct {
    UserId   int    `db:"user_id"`
    Username string `db:"username"`
    Sex      string `db:"sex"`
    Email    string `db:"email"`
}

var Db *sqlx.DB

func init() {

    database, err := sqlx.Open("mysql", "root:123@tcp(127.0.0.1:3306)/test")
    if err != nil {
        fmt.Println("open mysql failed,", 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("exec failed, ", err)
        return
    }

    fmt.Println("select succ:", person)
}

三.修改數據庫

package main

import (
    "fmt"

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

type Person struct {
    UserId   int    `db:"user_id"`
    Username string `db:"username"`
    Sex      string `db:"sex"`
    Email    string `db:"email"`
}


var Db *sqlx.DB

func init() {

    database, err := sqlx.Open("mysql", "root:123@tcp(127.0.0.1:3306)/test")
    if err != nil {
        fmt.Println("open mysql failed,", err)
        return
    }

    Db = database
}

func main() {

    _, err := Db.Exec("update person set username=? where user_id=?", "stu0003", 1)
    if err != nil {
        fmt.Println("exec failed, ", err)
        return
    }

}

四.刪除數據庫

package main

import (
    "fmt"

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

type Person struct {
    UserId   int    `db:"user_id"`
    Username string `db:"username"`
    Sex      string `db:"sex"`
    Email    string `db:"email"`
}


var Db *sqlx.DB

func init() {

    database, err := sqlx.Open("mysql", "root:123@tcp(127.0.0.1:3306)/test")
    if err != nil {
        fmt.Println("open mysql failed,", err)
        return
    }

    Db = database
}

func main() {

    _, err := Db.Exec("delete from person where user_id=?", 1)
    if err != nil {
        fmt.Println("exec failed, ", err)
        return
    }


    fmt.Println("delete succ")
}