golang http读html源码简单运用

package main

import (
	"fmt"
	"io"
	//"io/ioutil"
	"net/http"
	"os"
	"strings"
)

func main() {
	ch := make(chan bool, len(os.Args[1:]))
	for _, url := range os.Args[1:] {
		if !strings.HasPrefix(url, "http://") {
			url = "http://" + url
		}
		go func(url string) {
			resp, err := http.Get(url)
			if err != nil {
				fmt.Println(err)
				os.Exit(1)
			}
			defer resp.Body.Close()
			write, err := io.Copy(os.Stdout, resp.Body)
			//b, err := ioutil.ReadAll(resp.Body)//申请一个缓冲区来储存
			if err != nil {
				fmt.Println(err)
				os.Exit(1)
			}
			fmt.Printf("%s", write)
			ch <- true
		}(url)
	}
	for i := 0; i < len(os.Args[1:]); i++ {
		fmt.Printf("%s", i)
		<-ch
	}
}

控制台上go build first.go

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