深入了解Golang包的获取方法

目录

• 1.获取远程包
• 2.应用

1.获取远程包

go 语言有一个获取远程包的工具就是 go get，目前 go get 支持多数开源社区 (例如：github、googlecode、bitbucket、Launchpad)

例如：

go get github.com/astaxie/beedb

在pkg目录下tree /f可查看到安装的包如下所示：

2.应用

如下代码所示，可以应用远程下载的go第三方库文件，连接sqllite。

链接地址

package main

import (
	"fmt"
	"github.com/astaxie/beedb"
	_ "github.com/mattn/go-sqlite3"
	"time"
	"database/sql"
)

/*
CREATE TABLE `userinfo` (
	`uid` INTEGER PRIMARY KEY AUTOINCREMENT,
	`username` VARCHAR(64) NULL,
	`departname` VARCHAR(64) NULL,
	`created` DATE NULL
);
CREATE TABLE `userdeatail` (
	`uid` INT(10) NULL,
	`intro` TEXT NULL,
	`profile` TEXT NULL,
	PRIMARY KEY (`uid`)
);
*/

var orm beedb.Model

type Userinfo struct {
	Uid        int `beedb:"PK"`
	Username   string
	Departname string
	Created    string
}

func main() {
	db, err := sql.Open("sqlite3", "./asta.db")
	if err != nil {
		panic(err)
	}
	orm = beedb.New(db)
	//insert()
	//insertsql()
	// a := selectone()
	// fmt.Println(a)

	// b := selectall()
	// fmt.Println(b)

	// update()

	// updatesql()

	// findmap()

	// groupby()

	// jointable()

	// delete()

	//deletesql()

	//deleteall()
}

func insert() {
	//save data
	var saveone Userinfo
	saveone.Username = "Test Add User"
	saveone.Departname = "Test Add Departname"
	saveone.Created = time.Now().Format("2006-01-02 15:04:05")
	orm.Save(&saveone)
	fmt.Println(saveone)
}

func insertsql() {
	// add one
	add := make(map[string]interface{})
	add["username"] = "astaxie"
	add["departname"] = "cloud develop"
	add["created"] = "2012-12-02"
	orm.SetTable("userinfo").Insert(add)
}

func selectone() Userinfo {
	//get one info
	var one Userinfo
	orm.Where("uid=?", 1).Find(&one)
	return one
}

func selectall() []Userinfo {
	//get all data
	var alluser []Userinfo
	orm.Limit(10).Where("uid>?", 1).FindAll(&alluser)
	return alluser
}

func update() {
	// //update data
	var saveone Userinfo
	saveone.Uid = 1
	saveone.Username = "Update Username"
	saveone.Departname = "Update Departname"
	saveone.Created = time.Now().Format("2006-01-02 15:04:05")
	orm.Save(&saveone)
	fmt.Println(saveone)
}

func updatesql() {
	//original SQL update
	t := make(map[string]interface{})
	t["username"] = "updateastaxie"
	//update one
	orm.SetTable("userinfo").SetPK("uid").Where(2).Update(t)
	//update batch
	orm.SetTable("userinfo").Where("uid>?", 3).Update(t)
}

func findmap() {
	//Original SQL Backinfo resultsSlice []map[string][]byte
	//default PrimaryKey id
	c, _ := orm.SetTable("userinfo").SetPK("uid").Where(2).Select("uid,username").FindMap()
	fmt.Println(c)
}

func groupby() {
	//Original SQL Group By
	b, _ := orm.SetTable("userinfo").GroupBy("username").Having("username='updateastaxie'").FindMap()
	fmt.Println(b)
}

func jointable() {
	//Original SQL Join Table
	a, _ := orm.SetTable("userinfo").Join("LEFT", "userdeatail", "userinfo.uid=userdeatail.uid").Where("userinfo.uid=?", 1).Select("userinfo.uid,userinfo.username,userdeatail.profile").FindMap()
	fmt.Println(a)
}

func delete() {
	// // //delete one data
	saveone := selectone()
	orm.Delete(&saveone)
}

func deletesql() {
	//original SQL delete
	orm.SetTable("userinfo").Where("uid>?", 2).DeleteRow()
}

func deleteall() {
	// //delete all data
	alluser := selectall()
	orm.DeleteAll(&alluser)
}

到此这篇关于深入了解Golang包的获取方法的文章就介绍到这了,更多相关Golang包获取内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！