初学go语言开发第一个爬虫项目

package main
 
import (
	"fmt"
	"net/http"
	"os"
	"regexp"
	"strconv"
	"strings"
)
 
func HttpGet(url string) (result string, err error) {
	resp, err1 := http.Get(url)//发送Get请求
	if err1 != nil {
		err = err1
		return
	}
	defer resp.Body.Close()
    //读取网页内容
	buf := make([]byte, 4*1024)
	for {
		n, err := resp.Body.Read(buf)
		if n == 0 {
			fmt.Println("resp.Body.Read err=", err)
			break
		}
		result += string(buf[:n])
	}
	return
}
func SpiderOneJoy(url string) (title, content string, err error) {
	result, err1 := HttpGet(url)
	if err1 != nil {
		err = err1
		return
	}
    //取标题：
标题
	re := regexp.MustCompile(`
(?s:(.*?))
`)
	if re == nil {
		err = fmt.Errorf("%s", "regexp.MustCompile err")
		return
	}
	tmpTitle := re.FindAllStringSubmatch(result, 1)//1过滤一个
	for _, data := range tmpTitle {
		title = data[1]
		title = strings.Replace(title, "\t", "", -1)
		break // 防止有多次直接break
	}
    //取内容：
	re = regexp.MustCompile(`
(?s:(.*?))", "", -1)
		content = strings.Replace(content, "
", "", -1)
		break
	}
	return
}
func StoreJoyToFile(i int, fileTitle, fileContent []string) {
	//新建文件
    fileName := strconv.Itoa(i) + ".txt"
	f, err := os.Create(fileName)
	if err != nil {
		fmt.Println("os.Create err=", err)
		return
	}
	
	defer f.Close()
	len := len(fileTitle)
    //往文件里写内容
	for i := 0; i < len; i++ {
		f.WriteString(fileTitle[i] + "\n")
		f.WriteString(fileContent[i] + "\n")
		f.WriteString("---------\n")
	}
}
func SpiderPage(i int, page chan int) {
    //明确爬取的网址
	url := "https://www.pengfu.com/xiaohua_" + strconv.Itoa(i) + ".html"
	fmt.Printf("正在爬取第%d个网页：%s\n", i, url)
    //开始爬取页面的内容
	result, err := HttpGet(url)
	if err != nil {
		fmt.Println("HttpGet err=", err)
		return
	}
    //取内容，