first commit

go_backend/utils/jwt.go

@@ -0,0 +1,46 @@
+package utils
+
+import (
+	"ai_xhs/config"
+	"errors"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Claims struct {
+	EmployeeID int `json:"employee_id"`
+	jwt.RegisteredClaims
+}
+
+// GenerateToken 生成JWT token
+func GenerateToken(employeeID int) (string, error) {
+	claims := Claims{
+		EmployeeID: employeeID,
+		RegisteredClaims: jwt.RegisteredClaims{
+			ExpiresAt: jwt.NewNumericDate(time.Now().Add(time.Duration(config.AppConfig.JWT.ExpireHours) * time.Hour)),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+			NotBefore: jwt.NewNumericDate(time.Now()),
+		},
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString([]byte(config.AppConfig.JWT.Secret))
+}
+
+// ParseToken 解析JWT token
+func ParseToken(tokenString string) (*Claims, error) {
+	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
+		return []byte(config.AppConfig.JWT.Secret), nil
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	if claims, ok := token.Claims.(*Claims); ok && token.Valid {
+		return claims, nil
+	}
+
+	return nil, errors.New("invalid token")
+}