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目录结构

 

@GOPATH

 

 

CREATE TABLE `userinfo` (

  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,

  `name` varchar(20) NOT NULL DEFAULT '',

  `uid` int(10) unsigned NOT NULL DEFAULT '0',

  PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8

 

1.go

package main

import (

	"conf"

	"fmt"

	// 或者

	// myDbConf "conf"

)

func main() {

	opend, db := conf.OpenDB()

	//opend, db := myDbConf.OpenDB()

	fmt.Println(db)

	if opend {

		fmt.Println("open success")

	} else {

		fmt.Println("open faile:")

	}

	// DeleteFromDB(db, 10)

	//QueryFromDB(db)

	//DeleteFromDB(db, 1)

	//UpdateDB(db, 5)

	conf.InsertToDB(db)

	//myDbConf.InsertToDB(db)

	//UpdateUID(db, 5)T

	//UpdateTime(db, 4)

}

dbConf.go

package dbConf
 
 
 
import (
 
	"crypto/md5"
 
	"database/sql"
 
	"encoding/hex"
 
	"fmt"
 
	"strconv"
 
	"time"
 
 
 
	_ "github.com/go-sql-driver/mysql"
 
)
 
 
 
const (
 
	DB_Driver = "root:root@tcp(127.0.0.1:3306)/test?charset=utf8"
 
)
 
 
 
func OpenDB() (success bool, db *sql.DB) {
 
	var isOpen bool
 
	db, err := sql.Open("mysql", DB_Driver)
 
	// fmt.Println(db)
 
	if err != nil {
 
		isOpen = false
 
	} else {
 
		isOpen = true
 
	}
 
	CheckErr(err)
 
	return isOpen, db
 
}
 
 
 
func InsertToDB(db *sql.DB) {
 
	uid := GetNowtimeMD5()
 
	// nowTimeStr := GetTime()
 
	stmt, err := db.Prepare("insert userinfo set name=?,uid=?")
 
	CheckErr(err)
 
	res, err := stmt.Exec("wangbiao", uid)
 
	CheckErr(err)
 
	id, err := res.LastInsertId()
 
	CheckErr(err)
 
	if err != nil {
 
		fmt.Println("插入数据失败")
 
	} else {
 
		fmt.Println("插入数据成功：", id)
 
	}
 
}
 
 
 
func QueryFromDB(db *sql.DB) {
 
	rows, err := db.Query("SELECT * FROM userinfo")
 
	CheckErr(err)
 
	if err != nil {
 
		fmt.Println("error:", err)
 
	} else {
 
	}
 
	for rows.Next() {
 
		var uid string
 
		var name string
 
 
 
		CheckErr(err)
 
		err = rows.Scan(&uid, &name)
 
		fmt.Println(name)
 
		fmt.Println(uid)
 
	}
 
}
 
 
 
func UpdateDB(db *sql.DB, uid string) {
 
	stmt, err := db.Prepare("update userinfo set name=? where uid=?")
 
	CheckErr(err)
 
	res, err := stmt.Exec("zhangqi", uid)
 
	affect, err := res.RowsAffected()
 
	fmt.Println("更新数据：", affect)
 
	CheckErr(err)
 
}
 
func DeleteFromDB(db *sql.DB, id int) {
 
	stmt, err := db.Prepare("delete from userinfo where id=?")
 
	CheckErr(err)
 
	res, err := stmt.Exec(id)
 
	affect, err := res.RowsAffected()
 
	fmt.Println("删除数据：", affect)
 
}
 
 
 
func CheckErr(err error) {
 
	if err != nil {
 
		panic(err)
 
		fmt.Println("err:", err)
 
	}
 
}
 
 
 
func GetTime() string {
 
	const shortForm = "2006-01-02 15:04:05"
 
	t := time.Now()
 
	temp := time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second(), t.Nanosecond(), time.Local)
 
	str := temp.Format(shortForm)
 
	fmt.Println(t)
 
	return str
 
}
 
 
 
func GetMD5Hash(text string) string {
 
	haser := md5.New()
 
	haser.Write([]byte(text))
 
	return hex.EncodeToString(haser.Sum(nil))
 
}
 
 
 
func GetNowtimeMD5() string {
 
	t := time.Now()
 
	timestamp := strconv.FormatInt(t.UTC().UnixNano(), 10)
 
	return GetMD5Hash(timestamp)
 
}
 
 mysql.zip

 

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