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code/allapp/allapp-go2/utils/jwtx/jwt.go

@@ -0,0 +1,83 @@
+package jwtx
+
+import (
+	"allapp/conf"
+	"sync"
+	"time"
+
+	"github.com/golang-jwt/jwt/v4"
+)
+
+type CustomClaims struct {
+	UserID int64 `json:"user_id"`
+	jwt.RegisteredClaims
+}
+
+type jwtManager struct {
+	secret      string
+	tokenExpiry time.Duration
+}
+
+var (
+	manager *jwtManager
+	once    sync.Once
+)
+
+// InitJwt 初始化全局 JWT 配置
+func InitJwt() {
+	once.Do(func() {
+		manager = &jwtManager{
+			secret:      conf.GetConf().JWT.Secret,
+			tokenExpiry: conf.GetConf().JWT.AccessExpiry, // 直接当唯一 token
+		}
+	})
+}
+
+// CreateToken 创建 JWT
+func CreateToken(userID int64) (string, error) {
+	if manager == nil {
+		return "", jwt.ErrTokenInvalidClaims
+	}
+	return manager.createToken(userID)
+}
+
+// VerifyToken 校验 JWT（合法 or 不合法）
+func VerifyToken(tokenString string) (*CustomClaims, bool) {
+	if tokenString == "" || manager == nil {
+		return nil, false
+	}
+
+	token, err := jwt.ParseWithClaims(tokenString, &CustomClaims{}, func(token *jwt.Token) (interface{}, error) {
+		return []byte(manager.secret), nil
+	})
+
+	if err != nil || !token.Valid {
+		return nil, false
+	}
+
+	claims, ok := token.Claims.(*CustomClaims)
+	if !ok {
+		return nil, false
+	}
+
+	return claims, true
+}
+
+func (j *jwtManager) createToken(userID int64) (string, error) {
+	now := time.Now()
+
+	claims := &CustomClaims{
+		UserID: userID,
+		RegisteredClaims: jwt.RegisteredClaims{
+			IssuedAt: jwt.NewNumericDate(now),
+		},
+	}
+
+	// 只有大于 0 才设置过期时间
+	if j.tokenExpiry > 0 {
+		claims.ExpiresAt = jwt.NewNumericDate(now.Add(j.tokenExpiry))
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString([]byte(j.secret))
+}