// Package config handles application configuration. package config import "fmt" // AppConfig holds the application configuration. var AppConfig struct { Port int Env string } // init initializes the configuration. func init() { fmt.Println("Initializing config package...") // 模拟从配置文件加载配置 AppConfig.Port = 8080 AppConfig.Env = "development" fmt.Printf("Loaded config: %+v\n", AppConfig) }