go等待子协程完成再结束

 

 

 

 

 

 

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var wg sync.WaitGroup

func WaitGroupStart(url string) {
    start := time.Now()
    wg.Add(10)
    for i := 0; i < 10; i++ {
        go func(i int) {
            defer wg.Done()
            Spider(url,nil,i)
        }(i)
    }
    wg.Wait()
    elapsed := time.Since(start)
    fmt.Printf("WaitGroupStart Time %s\n ", elapsed)
}