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code/allapp/allapp-go/utils/jwtx/index.go

@@ -0,0 +1,86 @@
+package jwtx
+
+import (
+	"allapp/config"
+	"context"
+	"errors"
+	"sync"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type CustomClaims struct {
+	UserID int64 `json:"user_id"`
+	jwt.RegisteredClaims
+}
+
+// jwtManager 单例管理
+type jwtManager struct {
+	secret      string
+	tokenExpiry time.Duration
+}
+
+var (
+	manager *jwtManager
+	once    sync.Once
+)
+
+// InitJwt 初始化 JWT 单例
+func InitJwt() {
+	once.Do(func() {
+		cfg := config.GetConf().JWT
+		manager = &jwtManager{
+			secret:      cfg.Secret,
+			tokenExpiry: cfg.AccessExpiry,
+		}
+	})
+}
+
+// CreateToken 生成 JWT
+func CreateToken(ctx context.Context, userID int64) (string, error) {
+	if manager == nil {
+		return "", errors.New("jwt manager not initialized")
+	}
+	return manager.createToken(userID)
+}
+
+// VerifyToken 校验 token 并返回 claims
+func VerifyToken(ctx context.Context, tokenString string) (*CustomClaims, error) {
+	if tokenString == "" || manager == nil {
+		return nil, errors.New("token empty or manager not initialized")
+	}
+
+	token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return []byte(manager.secret), nil
+	})
+
+	if err != nil || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+
+	claims, ok := token.Claims.(*CustomClaims)
+	if !ok {
+		return nil, errors.New("invalid claims")
+	}
+
+	return claims, nil
+}
+
+// createToken 私有方法
+func (j *jwtManager) createToken(userID int64) (string, error) {
+	now := time.Now()
+	claims := &CustomClaims{
+		UserID: userID,
+		RegisteredClaims: jwt.RegisteredClaims{
+			IssuedAt: jwt.NewNumericDate(now),
+		},
+	}
+
+	if j.tokenExpiry > 0 {
+		claims.ExpiresAt = jwt.NewNumericDate(now.Add(j.tokenExpiry))
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString([]byte(j.secret))
+}