feat: 新增访客拦截器

config/config.go

@@ -20,6 +20,7 @@ type Config struct {
 	Log    LogConfig    `mapstructure:"log"`
 	MySQL  MySQLConfig  `mapstructure:"mysql"`
 	Redis  RedisConfig  `mapstructure:"redis"`
+	JWT    JWTConfig    `mapstructure:"jwt"`
 }
 
 // ServerConfig represents server configuration
@@ -73,6 +74,13 @@ type RedisConfig struct {
 	WriteTimeout int    `mapstructure:"write_timeout"` // seconds
 }
 
+// JWTConfig represents jwt configuration
+type JWTConfig struct {
+	Secret  string `mapstructure:"secret"`
+	Issuer  string `mapstructure:"issuer"`
+	Expires int    `mapstructure:"expires"` // hours
+}
+
 // Load loads configuration from environment variable CFG_PATH
 // Default path is config/config.yml
 func Load() (*Config, error) {