go的web框架Iris和gorm搭建基础版本的增删改查

其他 2021-01-31 06:19:44 阅读次数: 0

go语言 有很多优秀的web框架,于是乎,就自己动手 从零开始搭建一个demo,除了有些东西下载比较麻烦,其它的都很好弄,下面贴出我搭建的工程.在开始项目之前需要下载并安装好go的环境以及iris还有gorm的环境.

一:首先贴出我的项目结构图:

二:各分层情况代码

   controlle层

package controllers

import (
	"github.com/kataras/iris/context"
	"github.com/spf13/cast"
	"iris_demo/models"
	"iris_demo/service"
	"log"
)

type UserController struct {
	Service service.UserService
}
func NewUserController() *UserController {
	return &UserController{Service:service.NewUserService()}
}
//查询所有
func (self *UserController) GetList()(result *models.Result) {
	return self.Service.GetUserList()
}

//保存 and 修改
func (self *UserController) PostSaveUser(ctx context.Context)(result models.Result)  {
	user := new(models.User)
	err := ctx.ReadForm(user)
   if err != nil{
		log.Println(err)
		result.Msg = "数据有错误"
		return
	}
	return self.Service.PostSaveUser(*user)
}

//根据id查询
func (self *UserController) GetUserById(ctx context.Context)(result models.Result)  {
	id := ctx.PostValue("id")
	if id == "" {
		result.Code = 400
		result.Msg = "缺少参数id"
		return
	}
	return self.Service.GetUserById(cast.ToUint(id))
}

//根据id删除
func (self *UserController) PostDelUser(ctx context.Context)(result models.Result)  {
	id := ctx.PostValue("id")
	if id == "" {
		result.Code = 400
		result.Msg = "缺少参数id"
		return
	}
	return self.Service.DelUser(cast.ToUint(id))
}

service层

package service

import (
	"iris_demo/models"
	"iris_demo/repo"
)
type UserService interface {
	GetUserList () *models.Result
	PostSaveUser(user models.User) (result models.Result)
	GetUserById(id uint) (result models.Result)
	DelUser(id uint) (result models.Result)
}

type userService struct {}

func NewUserService() UserService{
	return &userService{}
}

var userRepo = repo.NewUserRepository()

func (self userService)GetUserList()  *models.Result{
	books := userRepo.GetUserList()
	result := new (models.Result)
	result.Data = books
	result.Code = 200
	result.Msg ="SUCCESS"
	return result
}
func (self userService) PostSaveUser(user models.User)(result models.Result){
	err := userRepo.SaveUser(user)
	if err != nil{
		result.Code = 400
		result.Msg = err.Error()
	}else{
		result.Code = 200
		result.Msg ="SUCCESS"
		user := userRepo.GetUserByName(user.Name)
		result.Data = user
	}
	return
}
func (self userService) GetUserById(id uint)(result models.Result){
	user,err := userRepo.GetUserById(id)
	if err!= nil{
		result.Code = 400
		result.Msg = err.Error()
	}else{
		result.Data = user
		result.Code = 200
		result.Msg ="SUCCESS"
	}
	return result
}
func (self userService) DelUser(id uint)(result models.Result){
	err := userRepo.DeleteUser(id)
	if err!= nil{
		result.Code = 400
		result.Msg = err.Error()
	}else{
		result.Code = 200
		result.Msg ="SUCCESS"
		list := userRepo.GetUserList()
		result.Data = list

	}
	return
}

Repository层

package repo

import (
	"iris_demo/datasource"
	"iris_demo/models"
)
type UserRepository interface {
	GetUserList() *[]models.User
	SaveUser(book models.User)(err error)
	GetUserById(id uint)(book models.User,err error)
	DeleteUser(id uint)(err error)
	GetUserByName(name string )*[]models.User
}
func NewUserRepository() UserRepository{
	return &userRepository{}
}
var db = datasource.GetDB()

type userRepository struct {}

func (self userRepository) GetUserList()*[]models.User{
	user:= new([]models.User)
	err:=db.Raw(`select * FROM user`).Scan(user).RowsAffected
	if err > 0 {
		return user
	}else{
		return nil
	}
}
func (self userRepository)GetUserByName(name string )*[]models.User{
	user:= new([]models.User)
	err:=db.Raw(`select * FROM user where user.name = ?`,name).Scan(user).RowsAffected
	if err > 0 {
		return user
	}else{
		return nil
	}
}


func (self userRepository) SaveUser(user models.User)(err error){
	if user.ID != 0{
		err := db.Save(&user).Error
		return err
	}else {
		err := db.Create(&user).Error
		return err
	}
}
func (self userRepository) GetUserById(id uint)(user models.User,err error){
	err = db.First(&user,id).Error
	return user,err
}
func (self userRepository) DeleteUser(id uint)(err error){
	user:= new(models.User)
	user.ID = id
	err = db.Unscoped().Delete(&user).Error
	return err
}

 入口main 方法

package main

import (
	"flag"
	"github.com/kataras/iris"
	"iris_demo/conf"
	"iris_demo/route"
)

func main() {
	flag.Parse()
	app := newApp()
	route.InitRouter(app)
	err := app.Run(iris.Addr(":"+conf.Sysconfig.Port), iris.WithoutServerError(iris.ErrServerClosed))
	if err != nil {
		panic(err)
	}
}

func newApp() *iris.Application {
	app := iris.New()
	app.Configure(iris.WithOptimizations)
	app.AllowMethods(iris.MethodOptions)
	return app
}

model

  user

package models

type User struct {
	ID            uint       `gorm:"primary_key"`
	Name          string     `gorm:"type:varchar(20);not null;"`
	Age           string     `gorm:"type:varchar(10);not null;"`
	Sex           string     `gorm:"type:varchar(20);not null;"`
}

 Result

package models

type Result struct {
	Code   int
	Msg    string
	Data   interface{}
}

func NewResult(data interface{}, c int, m ...string) *Result {
	r := &Result{Data: data, Code: c}

	if e, ok := data.(error); ok {
		if m == nil {
			r.Msg = e.Error()
		}
	} else {
		r.Msg = "SUCCESS"
	}
	if len(m) > 0 {
		r.Msg = m[0]
	}

	return r
}

初始化表

package datasource

import (
	"iris_demo/models"
)
// 初始化表 如果不存在该表 则自动创建
func Createtable() {
	GetDB().AutoMigrate(
		&models.User{},
	)
}

数据库连接

package datasource

import (
	_ "github.com/go-sql-driver/mysql"
	"github.com/jinzhu/gorm"
	"iris_demo/conf"
	"strings"
	"time"
)

var db *gorm.DB

func GetDB() *gorm.DB {
	return db
}

func init() {
	path := strings.Join([]string{conf.Sysconfig.DBUserName, ":", conf.Sysconfig.DBPassword, "@(", conf.Sysconfig.DBIp, ":", conf.Sysconfig.DBPort, ")/", conf.Sysconfig.DBName, "?charset=utf8&parseTime=true"}, "")
	var err error
	db, err = gorm.Open("mysql", path)
	if err !=nil{
		panic(err)
	}
	db.SingularTable(true)
	db.DB().SetConnMaxLifetime(1 * time.Second)
	db.DB().SetMaxIdleConns(20)   //最大打开的连接数
	db.DB().SetMaxOpenConns(2000) //设置最大闲置个数
	db.SingularTable(true)	//表生成结尾不带s
	// 启用Logger，显示详细日志
	db.LogMode(true)
	Createtable();
}

 

 

路由设置

package route

import (
"github.com/kataras/iris"
"github.com/kataras/iris/mvc"
"iris_demo/controllers"
)

func InitRouter(app *iris.Application) {
	bathUrl := "/api"
	mvc.New(app.Party(bathUrl +"/user")).Handle(controllers.NewUserController())
}

 

 数据库参数设置 config.json

{
  "Port": "端口",
  "DBUserName": "root",
  "DBPassword": "数据库密码",
  "DBIp": "数据库地址",
  "DBPort": "3306",
  "DBName": "数据库Name"
}

配置config

package conf

import (
	"github.com/json-iterator/go"
	"io/ioutil"
)

var Sysconfig = &sysconfig{}

func init() {
	//指定对应的json配置文件
	b, err := ioutil.ReadFile("config.json")
	if err != nil {
		panic("Sys config read err")
	}
	err = jsoniter.Unmarshal(b, Sysconfig)
	if err != nil {
		panic(err)
	}

}

type sysconfig struct {
	Port         string    `json:"Port"`
	DBUserName   string    `json:"DBUserName"`
	DBPassword   string    `json:"DBPassword"`
	DBIp         string    `json:"DBIp"`
	DBPort       string    `json:"DBPort"`
	DBName       string    `json:"DBName"`

}

启动项目,第一次启动会自动给我们创建表,我们可以通过控制台看到日志

三:测试

   添加数据

    

在查看数据库,可以看到数据插入成功

  修改数据

数据库

根据ID查询

查询所有(为了看到效果 我在插入一条)

根据ID删除数据(删除之后 我们在查询所有 会发现我们那条数据已经被删除掉了)

查看数据库发现只有一条了

到此,简单的增删改查已经全部完成

源码：https://mp.csdn.net/console/upDetailed

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