一。defer
1. Go 语言提供了关键字 来在函数运行结束的时候运行一段代码或调用一个 清理函数
2.
二。panic和recover
package main import ( "fmt" ) func main() { defer func() { msg := recover() fmt.Println(msg) }() fmt.Println("I am walking and singing...") panic("It starts to rain cats and dogs") }
原文：https://www.cnblogs.com/derekchen/p/9740946.html