修复同一用户和邮箱重复注册问题

dao/user.go

@@ -1,9 +1,12 @@
 package dao
 
-import "fmt"
+import (
+	"fmt"
+	"gorm.io/gorm"
+)
 
 type User struct {
-	ID         int    `gorm:"primaryKey column:id"`
+	gorm.Model
 	Name       string `gorm:"column:name"`
 	Age        int    `gorm:"column:age"`
 	Email      string `gorm:"column:email"`
@@ -13,7 +16,7 @@ type User struct {
 	UpdateTime string `gorm:"column:update_time"`
 }
 
-func CreateUser(name string, password, email string) int {
+func CreateUser(name string, password, email string) uint {
 	user := User{Name: name, Email: email, Password: password}
 	DB.Create(&user)
 	return user.ID

handler/user.go

@@ -26,7 +26,6 @@ type RLReq struct {
 }
 
 func loginHandler(c *gin.Context) {
-
 	var req_data RLReq
 	tokenString := ""
 	if err := c.ShouldBindJSON(&req_data); err == nil {
@@ -50,7 +49,7 @@ func loginHandler(c *gin.Context) {
 			}
 			worker.SetRedisWithExpire(tokenString, tokenString, time.Hour*10) // 设置过期时间为10分钟
 			// 返回令牌
-			c.JSON(200, gin.H{"token": tokenString, "username": req_data.User, "code": 0, "message": "success"})
+			c.JSON(200, gin.H{"code": 0, "message": "success", "token": tokenString})
 		} else {
 			c.JSON(400, gin.H{"error": "user not found", "code": 1, "message": "error"})
 		}
@@ -69,6 +68,10 @@ func registerHandler(c *gin.Context) {
 			hasher.Write([]byte(req_data.Password))                 // 生成密码的 MD5 散列值
 			req_data.Password = hex.EncodeToString(hasher.Sum(nil)) // 生成密码的 MD5 散列值
 		}
+		if service.ContainsUser(req_data.User, req_data.Email) == true {
+			c.JSON(400, gin.H{"error": "user already exists", "code": 1, "message": "error"})
+			return
+		}
 		id := service.CreateUser(req_data.User, req_data.Password, req_data.Email)
 		// 生成 JWT 令牌
 		token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{

service/userService.go

@@ -5,7 +5,7 @@ import (
 	"videoplayer/dao"
 )
 
-func CreateUser(name string, password, email string) int {
+func CreateUser(name string, password, email string) uint {
 	return dao.CreateUser(name, password, email)
 }
 
@@ -23,3 +23,12 @@ func GetUser(name, password string) dao.User {
 	}
 	return dao.User{}
 }
+
+func ContainsUser(name, email string) bool {
+	user := dao.FindUserByName(name)
+	user2 := dao.FindUserByEmail(email)
+	if user.ID != 0 || user2.ID != 0 {
+		return true
+	}
+	return false
+}