接着之前的内容,前面已经讲过很多Golang的基础语法,mysql的使用,redis的使用,也讲了orm框架,如何创建一个webapi 服务等等,感兴趣的可以看看以前的文章,https://www.cnblogs.com/zhangweizhong/category/1275863.html,
今天要来说一说,如何用beego开发web应用。
介绍
beego 是一个快速开发 Go 应用的 HTTP 框架,他可以用来快速开发 API、Web 及后端服务等各种应用,是一个 RESTful 的框架,同时也是一个关注度和使用量都比价高的开源项目。我认为它是go初学者比较容易上手的一门MVC Web框架。
它是由国内团队开发的开源框架,文档基本都是中文,简单易懂。
安装
需要安装 Beego 和 Bee 的开发工具:
$ go get github.com/astaxie/beego $ go get github.com/beego/bee
注意:
- beege和bee是两个概念。beego是框架,bee是工具,是命令。
- 在安装Beego前,先确认是否将$GOPATH/bin写入GO环境中。
创建应用
创建一个名为webDemo的应用
$ bee new webDemo //创建一个web应用 $ bee api webDemo //创建一个api应用
编译运行
进入webDemo目录中,执行bee run
,就会完成编译、运行:
$ bee run
成功后,打开浏览器访问:http://localhost:8080,可以看到如图:
开发
以上就beego 的安装和运行简单的介绍完了,下面我们就通过订单查询和新增的例子来学习学习如何用beego开发web应用。
一般的 beego 项目的目录如下所示:
├── conf //配置文件 │ └── app.conf ├── controllers //控制器 │ └── default.go ├── main.go ├── models //模型 │ └── models.go ├── routers //路由 │ └──router.go ├── static //静态文件 │ ├── css │ ├── ico │ ├── img │ └── js └── views //界面 └── index.tpl
conf
在app.conf 中增加数据库连接配置
appname = webDemo
httpport = 8080
runmode = dev
DBConn="root:root@tcp(localhost:3306)/zwz_test?charset=utf8"
controller
在controller目录下,增加pay.go
package controllers import ( "webDemo/models" ) func (c *MainController) PayQuery() { AccountID, _ := c.GetInt64("AccountID1") payment, _ := models.GetPaymenRec(AccountID) c.Data["AccountID"] = payment.AccountID c.Data["PartnerID"] = payment.PartnerID c.Data["UserID"] = payment.UserID c.Data["CreateTime"] = payment.CreateTime c.Data["Amount"] = payment.Amount c.Data["OuterTradeNo"] = payment.OuterTradeNo c.Data["Remark"] = payment.Remark c.Data["Status"] = payment.Status c.Data["Msg"] = payment.Msg c.TplName = "query.html" } func (c *MainController) PayAdd() { var payment models.PaymentRecordStr c.ParseForm(&payment) pay, _ := models.AddPaymenRec(payment) c.Data["AccountID"] = pay.AccountID c.Data["PartnerID"] = pay.PartnerID c.Data["UserID"] = pay.UserID c.Data["CreateTime"] = pay.CreateTime c.Data["Amount"] = pay.Amount c.Data["OuterTradeNo"] = pay.OuterTradeNo c.Data["Remark"] = pay.Remark c.TplName = "query.html" }
models
1. 在models目录下,增加pay.go
package models
import (
"database/sql"
"errors"
"strconv"
"time"
"github.com/astaxie/beego"
_ "github.com/go-sql-driver/mysql"
)
var Db *sql.DB
type PaymentRecord struct {
Id int64
AccountID int64
PartnerID string
UserID string
CreateTime string
Amount float64
OuterTradeNo string
Remark string
Status int
Msg string
}
type PaymentRecordStr struct {
AccountID string
PartnerID string
UserID string
CreateTime string
Amount string
OuterTradeNo string
Remark string
}
func init() {
dbconn := beego.AppConfig.String("DBConn")
db, err := sql.Open("mysql", dbconn)
if err != nil {
return
}
db.SetMaxOpenConns(2000)
db.SetMaxIdleConns(0)
db.Ping()
Db = db
}
func Close() {
if Db != nil {
Db.Close()
}
}
func AddPaymenRec(rec PaymentRecordStr) (PaymentRecord, error) {
var isql = "INSERT pay_demo SET account_id=?,partner_id=?,user_id=?,amount=?,outer_tradeno=?,remark=?"
AccountID, _ := strconv.ParseInt(rec.AccountID, 10, 64)
Amount, _ := strconv.ParseFloat(rec.Amount, 64)
response := PaymentRecord{0, AccountID, rec.PartnerID, rec.UserID, rec.CreateTime, Amount, rec.OuterTradeNo, rec.Remark, 0, ""}
if Db == nil {
return response, errors.New("AddPaymenRec connect mysql failed")
}
stmt, _ := Db.Prepare(isql)
defer stmt.Close()
beego.Informational("AddPaymenRec rec=%#v", rec)
res, err := stmt.Exec(AccountID, rec.PartnerID, rec.UserID, Amount, rec.OuterTradeNo, rec.Remark)
if err == nil {
response.Id, _ = res.LastInsertId()
response.Status = 1
response.Msg = "已生效"
return response, nil
}
return response, nil
}
func GetPaymenRec(AccountID int64) (PaymentRecord, error) {
var qsql = "SELECT * FROM pay_demo WHERE account_id=?"
var response PaymentRecord
response.Msg = "失败"
if AccountID != 0 {
if Db == nil {
return response, errors.New("GetPaymenRec connect mysql failed")
}
stmt, _ := Db.Prepare(qsql)
rows, err := stmt.Query(AccountID)
defer rows.Close()
if err != nil {
return response, err
}
var timedate string
for rows.Next() {
err = rows.Scan(&response.Id, &response.AccountID, &response.PartnerID, &response.UserID, &timedate, &response.Amount, &response.OuterTradeNo, &response.Remark)
if err != nil {
return response, err
}
DefaultTimeLoc := time.Local
loginTime, err := time.ParseInLocation("2006-01-02 15:04:05", timedate, DefaultTimeLoc)
if err == nil {
unix_time := loginTime.Unix() //time to int64
response.CreateTime = time.Unix(unix_time, 0).Format("2006-01-02 15:04:05")
response.Status = 2
response.Msg = "成功"
return response, err
} else {
return response, err
}
}
return response, nil
}
return response, errors.New("GetPaymenRec Requset is non porinter")
}
2. 在数据库中,增加pay_demo表
CREATE TABLE `pay_demo` ( `id` int(64) NOT NULL AUTO_INCREMENT, `account_id` int(64) NOT NULL, `partner_id` varchar(50) CHARACTER SET utf8 DEFAULT NULL, `user_id` varchar(50) CHARACTER SET utf8 DEFAULT NULL, `create_time` datetime DEFAULT CURRENT_TIMESTAMP, `amount` double DEFAULT '0', `outer_tradeno` varchar(50) CHARACTER SET utf8 DEFAULT NULL, `remark` varchar(255) CHARACTER SET utf8 DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INCREMENT=5024 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
views
将原有的index.tpl 删除,增加新的index.html 和query.html
index.html
<!DOCTYPE html> <html> <head> <title>webDemo</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <div> <form action="/query" method="Post"> <div> GetPaymentBy AccountID:<input type="text" name="AccountID1" /> </div> <div> <input type= "submit" name="n" /> </div> </form> <br/> <br/> <form action="/add" method="Post"> <div> AccountID:<input type="text" name="AccountID" /> </div> <div> PartnerID:<input type="text" name="PartnerID" /> </div> <div> UserID :<input type="text" name="UserID" /> </div> <div> CreateTime:<input type="text" name="CreateTime" /> </div> <div> Amount:<input type="text" name="Amount" /> </div> <div> OuterTradeNo:<input type="text" name="OuterTradeNo" /> </div> <div> Remark:<input type="text" name="Remark" /> </div> <div> <input type= "submit" name="add" value="添加"/> </div> </form> </div> </body> </html>
query.html
<!DOCTYPE html> <html> <head> <title>BeegoDemo</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <div> <div> Payment: </div> <div> AccountID:{{.AccountID}} </div> <div> PartnerID:{{.PartnerID}} </div> <div> UserID:{{.UserID}} </div> <div> CreateTime:{{.CreateTime}} </div> <div> Amount:{{.Amount}} </div> <div> OuterTradeNo:{{.OuterTradeNo}} </div> <div> Remark:{{.Remark}} </div> </div> </body> </html>
routers
在router.go 中增加以上新增的2个路由
package routers import ( "webDemo/controllers" "github.com/astaxie/beego" ) func init() { beego.Router("/query", &controllers.MainController{}, "Post:PayQuery") // 新增PayQuery路由 beego.Router("/add", &controllers.MainController{}, "Post:PayAdd") // 新增PayAdd路由 beego.Router("/", &controllers.MainController{}) }
重新运行
增加完以上代码之后,重新运行webDemo应用,就可以看到我们新增加的订单查询和新增订单的功能。
最后
1. 以上就把beego 的安装给介绍完了。同时也通过简单的订单支付的例子,介绍如何使用beego 开发web应用。
· 2. 这里只是对beego 做一个最基本的介绍,想要详细了解beego 的各种功能,可以去它的官网:https://beego.me
3. 完整例子下载:webDemo