go语言实现抓取网页内容

package main

import (
	"fmt"
	"io/ioutil" //[1]
	"net/http"  //[2]
	"os"        //[3]
	//"path/filepath" // [4]
)

func main() {
	//	if len(os.Args) != 2 {
	//		fmt.Printf("useage:%s http://url", filepath.Base(os.Args[0]))
	//		os.Exit(1)
	//	}
	//var url string

	for i := 15190; i > 10153; i -= 1 {
		url := fmt.Sprintf("http://1222.42.772.2182:8088/index.php?p=20015&action=30&itemid=%d", i)
		resp, err := http.Get(url)
		//resp, err := http.Get(os.Args[1])
		if err != nil {
			fmt.Println(err) //go语言会内含详细的错误描述，可以尝试不同的参数来测试
			os.Exit(2)
		}
		defer resp.Body.Close()                 //The client must close the response body when finished with it:
		body, err2 := ioutil.ReadAll(resp.Body) //此处使用了包【1】
		if err2 != nil {
			fmt.Println(err2)
			os.Exit(3)
		}
		fmt.Printf("%d ,%srn", i, body)

	}
}