gin+gorm增删改查目录框架-编程知识

从网上找资料,发现,很多都是直接的结构

路由，后端的controller层，还有model层，都是放在了同一个main.go文件中，如果写项目的话，还得自己去拆文件，拆代码，经过查询和自己总结，下面放一个目录框架

总体目录结构

按照业务流程顺序，解释说明

1、加载自定义封装函数文件、数据库、redis

package mainimport ("ginchat/router""ginchat/utils"
)func main() {utils.InitConfig()utils.InitMysql()utils.InitRedis()r := router.Router()r.Run(":8081")
}

依次的三个函数

system_init.go文件里面

package utilsimport ("fmt""github.com/go-redis/redis/v8""github.com/spf13/viper""gorm.io/driver/mysql""gorm.io/gorm""gorm.io/gorm/logger""log""os""time"
)var (DB  *gorm.DBerr errorRed *redis.Client
)func InitRedis() {fmt.Print("随便打印点什么,标记一下")Red = redis.NewClient(&redis.Options{Addr:         viper.GetString("redis.addr"),Password:     viper.GetString("redis.password"),DB:           viper.GetInt("redis.DB"),PoolSize:     viper.GetInt("redis.poolSize"),MinIdleConns: viper.GetInt("redis.minIdleConn"),})}func InitConfig() {viper.SetConfigName("app")viper.AddConfigPath("config")err := viper.ReadInConfig()if err != nil {fmt.Println(err)}fmt.Println("config app", viper.Get("app"))fmt.Println("config mysql", viper.Get("mysql"))
}func InitMysql() {newLogger := logger.New(//自定义日志模版 打印SQL语句log.New(os.Stdout, "\r\n", log.LstdFlags),logger.Config{SlowThreshold: time.Second, //慢SQL阈值LogLevel:      logger.Info, //级别Colorful:      true,        //彩色},)fmt.Print(newLogger)DB, err = gorm.Open(mysql.Open(viper.GetString("mysql.dns")), &gorm.Config{})if err != nil {fmt.Println("连接数据库失败", err)} else {fmt.Printf("数据库连接成功: %v", DB)}}

2、加载路由文件

package routerimport ("fmt""ginchat/service""github.com/gin-gonic/gin"
)func Router() *gin.Engine {fmt.Print("进入路由了")r := gin.Default()//用户模块r.GET("/user/getUserList", service.GetUserList)r.POST("/user/createUser", service.CreateUser)r.DELETE("/user/deleteUser", service.DeleteUser)r.PUT("/user/updateUser", service.UpdateUser)return r
}

3、这里面的MySQL和Redis配置，可以直接写死在这个文件里面，也可以单独摘出来,放在配置文件中，这里是放在了配置文件中

app.yml中

mysql:dns: admin3:123456@tcp(127.0.0.1:3306)/ginchat?charset=utf8mb4&parseTime=True&loc=Local
redis:addr:"127.0.0.1:6379"password:""DB:0poolSize:30minIdleConn:30

说明一下，dns里面的参数

账号:密码@tcp(ip:端口号)/数据库名字?xxxxxxxx

4、然后，预备的工作就完成了。另外，有一个sql文件下面的testGorm.go文件

package mainimport ("fmt""ginchat/models""gorm.io/driver/mysql""gorm.io/gorm"
)func main() {db, err := gorm.Open(mysql.Open("admin3:123456@tcp(127.0.0.1:3306)/ginchat?charset=utf8mb4&parseTime=True&loc=Local"), &gorm.Config{})if err != nil {fmt.Println("连接数据库失败", err)} else {fmt.Printf("数据库连接成功: %v", db)}err2 := db.AutoMigrate(&models.UserBasic{})if err2 != nil {return} else {fmt.Printf("创建表成功: %v", db)}
}

用于临时生成数据表的一个文件，可以去直接执行此函数，生成数据表，或者也可以自己手动去利用navicat去创建表格

这里用到了models包下面的UserBasic{}

package modelsimport ("fmt""ginchat/utils""gorm.io/gorm"
)type UserBasic struct {gorm.ModelName          stringPassword      stringPhone         string `valid:"matches(^1[3-9]{1}\\d{9}$)"`Email         string `valid:"email"`Avatar        string //头像Identity      stringClientIp      stringSalt          stringClientPort    stringLoginTime     uint64HeartbeatTime uint64LoginOutTime  uint64IsLogout      boolDeviceInfo    string
}func (table *UserBasic) TableName() string {return "user_basic"
}func GetUserList() []*UserBasic {data := make([]*UserBasic, 10)//fmt.Printf("data的内容为: %v\n", &data)utils.DB.Find(&data)for _, v := range data {fmt.Println(v)}return data}func CreateUser(user UserBasic) *gorm.DB {return utils.DB.Create(&user)
}func DeleteUser(user UserBasic) *gorm.DB {return utils.DB.Delete(&user)
}func UpdateUser(user UserBasic) *gorm.DB {return utils.DB.Model(&user).Updates(UserBasic{Name: user.Name, Phone: user.Phone, Email: user.Email, Password: user.Password, Avatar: user.Avatar})
}func FindUserByName(name string) UserBasic {user := UserBasic{}utils.DB.Where("name=?", name).First(&user)return user
}func FindUserByPhone(phone string) UserBasic {user := UserBasic{}utils.DB.Where("phone=?", phone).First(&user)return user
}func FindUserByEmail(email string) UserBasic {user := UserBasic{}utils.DB.Where("email=?", email).First(&user)return user
}

UserBasic里面需要定义好数据表的字段

5、gorm.Model是gorm包已经先给预先设置好的4个字段

同时，前面是用驼峰式写法，如果不做特殊说明的话，基本上就会转变为下划线方式去设置字段，这个是gorm默认的对应关系

字段名可以控制，字段类型和大小，如果在创建之后不符合自己要求，可以自己额外修改

6、接下来就是后面的调取引用函数了

controller层

package serviceimport ("fmt""ginchat/models""ginchat/utils""github.com/asaskevich/govalidator""github.com/gin-gonic/gin""math/rand""strconv"
)func GetUserList(c *gin.Context) {data := make([]*models.UserBasic, 10)data = models.GetUserList()c.JSON(200, gin.H{"code":    200,"message": data,})
}func CreateUser(c *gin.Context) {user := models.UserBasic{}user.Name = c.PostForm("name")user.Phone = c.PostForm("phone")user.Email = c.PostForm("email")password := c.PostForm("password")rePassword := c.PostForm("repassword")salt := fmt.Sprintf("%06d", rand.Int31())if password != rePassword {c.JSON(200, gin.H{"code":    -1,"message": "两次密码不一样!",})return}data1 := models.FindUserByName(user.Name)fmt.Print(data1)if data1.Name != "" {c.JSON(200, gin.H{"code":    -1,"message": "用户名不能重复!",})return}data2 := models.FindUserByPhone(user.Phone)fmt.Print(data2)if data2.Phone != "" {c.JSON(200, gin.H{"code":    -1,"message": "手机号不能重复!",})return}data3 := models.FindUserByEmail(user.Email)fmt.Print(data3)if data3.Email != "" {c.JSON(200, gin.H{"code":    -1,"message": "邮箱不能重复!",})return}user.Password = utils.MakePassword(password, salt)user.Salt = saltmodels.CreateUser(user)c.JSON(200, gin.H{"code":    0,"message": "新增用户成功!",})}func DeleteUser(c *gin.Context) {user := models.UserBasic{}id, _ := strconv.Atoi(c.Query("id"))user.ID = uint(id)models.DeleteUser(user)c.JSON(200, gin.H{"code":    0,"message": "删除用户成功!",})
}func UpdateUser(c *gin.Context) {user := models.UserBasic{}id, _ := strconv.Atoi(c.PostForm("id"))user.ID = uint(id)user.Name = c.PostForm("name")user.Password = c.PostForm("password")user.Phone = c.PostForm("phone")user.Email = c.PostForm("email")_, err := govalidator.ValidateStruct(user)if err != nil {fmt.Print(err)c.JSON(200, gin.H{"code":    -1,"message": "修改参数不匹配!",})return} else {fmt.Print(user)models.UpdateUser(user)c.JSON(200, gin.H{"code":    0,"message": "修改用户成功!",})}}

这里举例的是，用户信息表的相关增删改查

另外两个自己封装函数文件，暂时上面几个函数未用到

先贴在这里md5.go和resp.go

package utilsimport ("crypto/md5""encoding/hex""strings"
)// Md5Encode 小写
func Md5Encode(data string) string {h := md5.New()h.Write([]byte(data))tempStr := h.Sum(nil)return hex.EncodeToString(tempStr)
}// MD5Encode 大写
func MD5Encode(data string) string {return strings.ToUpper(Md5Encode(data))
}// MakePassword 加密
func MakePassword(plainpwd, salt string) string {return Md5Encode(plainpwd + salt)
}// ValidPassword 解密
func ValidPassword(plainpwd, salt, password string) bool {return Md5Encode(plainpwd+salt) == password
}

package utilsimport ("encoding/json""net/http"
)type H struct {Code  intMsg   stringData  interface{}Rows  interface{}Total interface{}
}func Resp(w http.ResponseWriter, code int, data interface{}, msg string) {w.Header().Set("Content-Type", "application/json")w.WriteHeader(http.StatusOK)h := H{Code: code,Data: data,Msg:  msg,}ret, err := json.Marshal(h)if err != nil {panic(err)}w.Write(ret)
}func RespFail(w http.ResponseWriter, msg string) {Resp(w, -1, nil, msg)
}func RespOK(w http.ResponseWriter, data interface{}, msg string) {Resp(w, 0, data, msg)
}func RespOKList(w http.ResponseWriter, data interface{}, total interface{}) {RespList(w, 0, data, total)
}func RespList(w http.ResponseWriter, code int, data interface{}, total interface{}) {w.Header().Set("Content-Type", "application/json")w.WriteHeader(http.StatusOK)h := H{Code:  code,Rows:  data,Total: total,}ret, err := json.Marshal(h)if err != nil {panic(err)}w.Write(ret)
}

此部分代码是看了B站up主之后总结出来的，感兴趣的可以去搜索看一下

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