实例1:
//main package main import ( "fmt" "os" ) func main() { fmt.Println(os.Args) }
执行结果
使用flag获取复杂参数
实例2
//main package main import ( "flag" "fmt" ) func main() { methodPtr := flag.String("method", "default", "method of sample") //return pointer valuePtr := flag.Int("value", -1, "value of sample") flag.Parse() fmt.Println(*methodPtr, *valuePtr) }
执行结果:
实例3:加入错误提示(无法解析同名列表参数,eg: -cfg a -cfg b -cfg c ...)
//main package main import ( "flag" "fmt" ) func style() { //格式化定义 methodPtr := flag.String("method", "default", "method of sample") //return pointer valuePtr := flag.Int("value", -1, "value of sample") //解析 flag.Parse() fmt.Println(*methodPtr, *valuePtr) } func style2() { var method string var value int flag.StringVar(&method, "method", "default", "method of sample") flag.IntVar(&value, "value", -1, "value of sample") //解析 flag.Parse() fmt.Println(method, value) } func main() { style2() }
执行结果: