百万级并发IM即时消息系统（4）用户基本CRUD

前置：

代码层次还是由低到高：model层数据库操作->service层封装->路由层调用业务

手把手详细教你如何使用go-swagger文档 - 掘金 (juejin.cn)

golang swagger注解说明_go swagger 注释_mctlilac的博客-CSDN博客

Gin篇：gorm 使用 - -零 - 博客园 (cnblogs.com)

1）get方式获取参数context.Query("xxx")

golang gin 获取请求中的查询参数，并设置默认值 - golang - 大象笔记 (sunzhongwei.com)

2)post方式获取参数context.Request.FormValue("xxx")

作用基本同上：可以查询url后的？参数、href超链里？后参数

Golang 中Ruquest.FormValue方法_goland formvalue_Kotlin20180728的博客-CSDN博客

1.路由层

	//用户模块
	r.POST("/user/getUserList", service.GetUserList) //遇到指定请求，调用service层的函数
	r.POST("/user/createUser", service.CreateUser)
	//r.GET("/user/createUser", service.CreateUser)  //用于swagger UI测试
	r.POST("/user/deleteUser", service.DeleteUser)
	r.POST("/user/updateUser", service.UpdateUser)
	r.POST("/user/findUserByNameAndPwd", service.FindUserByNameAndPwd)
	r.POST("/user/find", service.FindByID)

2.service层，这里都是post方式

1）.用户增加

func CreateUser(c *gin.Context) {
	user := models.UserBasic{}

	//get请求专用c.Query
	查询请求URL ?后面的参数
	// user.Name = c.Query("name")
	// password := c.Query("password")
	// repassword := c.Query("repassword")

	//post请求用函数FormValue
	//设置属性值
	user.Name = c.Request.FormValue("name")
	password := c.Request.FormValue("password")
	repassword := c.Request.FormValue("Identity")
	fmt.Println(user.Name, "  >>>>>>>>>>>  ", password, repassword)
	salt := fmt.Sprintf("%06d", rand.Int31())

	data := models.FindUserByName(user.Name)
	if user.Name == "" || password == "" || repassword == "" {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "用户名或密码不能为空！",
			"data":    user,
		})
		return
	}
	if data.Name != "" {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "用户名已注册！",
			"data":    user,
		})
		return
	}
	if password != repassword {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "两次密码不一致！",
			"data":    user,
		})
		return
	}
	//user.PassWord = password
	user.PassWord = utils.MakePassword(password, salt)
	user.Salt = salt
	fmt.Println(user.PassWord)
	user.LoginTime = time.Now()
	user.LoginOutTime = time.Now()
	user.HeartbeatTime = time.Now()
	models.CreateUser(user)
	c.JSON(200, gin.H{
		"code":    0, //  0成功   -1失败
		"message": "新增用户成功！",
		"data":    user,
	})
}

2）.删除

func DeleteUser(c *gin.Context) {
	user := models.UserBasic{}
	id, _ := strconv.Atoi(c.Query("id"))
	fmt.Println(id)
	user.ID = uint(id)
	models.DeleteUser(user)
	c.JSON(200, gin.H{
		"code":    0, //  0成功   -1失败
		"message": "删除用户成功！",
		"data":    user,
	})

}

3）.修改

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.Avatar = c.PostForm("icon")
	user.Email = c.PostForm("email")
	fmt.Println("update :", user)

	_, err := govalidator.ValidateStruct(user)
	if err != nil {
		fmt.Println(err)
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "修改参数不匹配！",
			"data":    user,
		})
	} else {
		models.UpdateUser(user)
		c.JSON(200, gin.H{
			"code":    0, //  0成功   -1失败
			"message": "修改用户成功！",
			"data":    user,
		})
	}

}

4）.查

func FindUserByNameAndPwd(c *gin.Context) {
	data := models.UserBasic{}

	//name := c.Query("name")
	//password := c.Query("password")
	name := c.Request.FormValue("name")
	password := c.Request.FormValue("password")
	fmt.Println(name, password)
	user := models.FindUserByName(name)
	if user.Name == "" {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "该用户不存在",
			"data":    data,
		})
		return
	}

	flag := utils.ValidPassword(password, user.Salt, user.PassWord)
	if !flag {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "密码不正确",
			"data":    data,
		})
		return
	}
	pwd := utils.MakePassword(password, user.Salt)
	data = models.FindUserByNameAndPwd(name, pwd)

	c.JSON(200, gin.H{
		"code":    0, //  0成功   -1失败
		"message": "登录成功",
		"data":    data,
	})
}

func FindUserByNameAndPwd(c *gin.Context) {
	data := models.UserBasic{}

	//name := c.Query("name")
	//password := c.Query("password")
	name := c.Request.FormValue("name")
	password := c.Request.FormValue("password")
	fmt.Println(name, password)
	user := models.FindUserByName(name)
	if user.Name == "" {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "该用户不存在",
			"data":    data,
		})
		return
	}

	flag := utils.ValidPassword(password, user.Salt, user.PassWord)
	if !flag {
		c.JSON(200, gin.H{
			"code":    -1, //  0成功   -1失败
			"message": "密码不正确",
			"data":    data,
		})
		return
	}
	pwd := utils.MakePassword(password, user.Salt)
	data = models.FindUserByNameAndPwd(name, pwd)

	c.JSON(200, gin.H{
		"code":    0, //  0成功   -1失败
		"message": "登录成功",
		"data":    data,
	})
}