我正在使用 Golang，我創(chuàng)建了這個(gè)小應(yīng)用程序來(lái)使用 goroutine 進(jìn)行多個(gè)并發(fā) api 調(diào)用。當(dāng)應(yīng)用程序工作時(shí)，調(diào)用完成后，應(yīng)用程序會(huì)卡住，這是有道理的，因?yàn)樗鼰o(wú)法退出范圍c循環(huán)，因?yàn)橥ǖ牢搓P(guān)閉。我不知道在這種模式下哪里可以更好地關(guān)閉通道。package mainimport "fmt"import "net/http"func main() {    links := []string{        "https://github.com/fabpot",        "https://github.com/andrew",        "https://github.com/taylorotwell",        "https://github.com/egoist",        "https://github.com/HugoGiraudel",    }    checkUrls(links)}func checkUrls(urls []string) {    c := make(chan string)    for _, link := range urls {        go checkUrl(link, c)    }    for msg := range c {        fmt.Println(msg)    }    close(c) //this won't get hit}func checkUrl(url string, c chan string) {    _, err := http.Get(url)    if err != nil {        c <- "We could not reach:" + url    } else {        c <- "Success reaching the website:" + url    }}