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package main import ( "fmt" ) func recoverFullName() { if r := recover(); r!= nil { fmt.Println("recovered from ", r) } } func fullName(firstName *string, lastName *string) { defer recoverFullName() if firstName == nil { panic("runtime error: first name cannot be nil") } if lastName == nil { panic("runtime error: last name cannot be nil") } fmt.Printf("%s %s\n", *firstName, *lastName) fmt.Println("returned normally from fullName") } func main() { defer fmt.Println("deferred call in main") firstName := "Elon" fullName(&firstName, nil) fmt.Println("returned normally from main") }
运行结果 :
正在执行...
