Go-内置函数之appendrecover用法

Posted 2021-01-19 裸奔的小鸵鸟

package main


import "fmt"
import "time"

func test() {
	defer func() {
		if err := recover(); err != nil {
			fmt.Println(err)
		}
	}()

	b := 0
	a := 100 / b
	fmt.Println(a)
	return
}

func main() {
	for {
		test()
		time.Sleep(time.Second)
	}

	var  a []int
	a = append(a,10,20,333)
	a = append(a,a...)
	fmt.Println(a)
}



---输出结果---

E:Goproject>haha1.exe
runtime error: integer divide by zero
runtime error: integer divide by zero
runtime error: integer divide by zero
runtime error: integer divide by zero

总结：输出实时异常结果，不利于排查详细问题。应打出详细信息输出到日志里。