【go语言爬虫】网贷天眼数据平台爬虫

本文主要是介绍【go语言爬虫】网贷天眼数据平台爬虫，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

一、需求分析
利用go语言抓取网贷天眼数据平台昨日数据
字段：
排序平台名称成交额综合利率投资人借款周期借款人满标速度累计贷款余额资金净流入
抓取url:
http://www.p2peye.com/shuju/ptsj/

二、go语言爬虫实现源代码

package mainimport ("fmt""io/ioutil""net/http""time""os""regexp""github.com/axgle/mahonia")//定义新的数据类型
type Spider1 struct {url    stringheader map[string]string
}//定义 Spider get的方法
func (keyword Spider1) get_html_header() string {client := &http.Client{}req, err := http.NewRequest("GET", keyword.url, nil)if err != nil {}for key, value := range keyword.header {req.Header.Add(key, value)}resp, err := client.Do(req)if err != nil {}defer resp.Body.Close()body, err := ioutil.ReadAll(resp.Body)if err != nil {}return string(body)}func parse1() {header := map[string]string{"Host":"www.p2peye.com","Connection":"keep-alive","Cache-Control":"max-age=0","Upgrade-Insecure-Requests":"1","User-Agent":"Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36","Accept":"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8","Referer":"http://www.p2peye.com/shuju/hysj/","Accept-Language":"zh-CN,zh;q=0.8",}//创建excel文件f, err := os.Create("C:/p2p.xlsx")if err != nil {panic(err)}defer f.Close()//写入标题f.WriteString("排序"+"\t"+"平台名称"+"\t"+"成交额"+"\t" +"综合利率"+"\t"   +"投资人"+"\t"+"借款周期"+"\t"+"借款人"+"\t"+"满标速度"+"\t"+"累计贷款余额"+"\t"+"资金净流入"+"\r\n")url := "http://www.p2peye.com/shuju/ptsj/"spider := &Spider1{url, header}html := spider.get_html_header()//设置编码格式decoder := mahonia.NewDecoder("gbk")html1:=decoder.ConvertString(html)//排序pattern1 := `<td class="num">(.*?)</td>`rp1 := regexp.MustCompile(pattern1)find_txt1 := rp1.FindAllStringSubmatch(html1, -1)//平台名称pattern2 := ` onclick="return false" title="(.*)">`rp2 := regexp.MustCompile(pattern2)find_txt2 := rp2.FindAllStringSubmatch(html1, -1)//成交额pattern3 := `<td class="total">(.*?)</td>`rp3 := regexp.MustCompile(pattern3)find_txt3 := rp3.FindAllStringSubmatch(html1, -1)//综合利率pattern4 := `<td class="rate">(.*?)</td>`rp4 := regexp.MustCompile(pattern4)find_txt4 := rp4.FindAllStringSubmatch(html1, -1)//投资人pattern5 := `<td class="pnum">(.*?)</td>`rp5 := regexp.MustCompile(pattern5)find_txt5 := rp5.FindAllStringSubmatch(html1, -1)//借款周期pattern6 := `<td class="cycle">(.*?)</td>`rp6 := regexp.MustCompile(pattern6)find_txt6 := rp6.FindAllStringSubmatch(html1, -1)//借款人pattern7 := `<td class="p1num">(.*?)</td>`rp7 := regexp.MustCompile(pattern7)find_txt7 := rp7.FindAllStringSubmatch(html1, -1)//满标速度pattern8 := `<td class="fuload">(.*?)</td>`rp8 := regexp.MustCompile(pattern8)find_txt8 := rp8.FindAllStringSubmatch(html1, -1)//累计贷款余额pattern9 := `<td class="alltotal">(.*?)</td>`rp9 := regexp.MustCompile(pattern9)find_txt9 := rp9.FindAllStringSubmatch(html1, -1)//资金净流入pattern10 := `<td class="capital">(.*?)</td>`rp10 := regexp.MustCompile(pattern10)find_txt10 := rp10.FindAllStringSubmatch(html1, -1) 写入UTF-8 BOMf.WriteString("\xEF\xBB\xBF")   打印全部数据和写入excel文件for i := 0; i < len(find_txt1); i++ {fmt.Printf("%s  %s  %s  %s  %s  %s  %s  %s  %s  %s\n",find_txt1[i][1],find_txt2[i][1],find_txt3[i][1],find_txt4[i][1],find_txt5[i][1],find_txt6[i][1],find_txt7[i][1],find_txt8[i][1],find_txt9[i][1],find_txt10[i][1])f.WriteString(find_txt1[i][1] + "\t" + find_txt2[i][1] + "\t" + find_txt3[i][1] + "\t"+find_txt4[i][1] + "\t" + find_txt5[i][1] + "\t"+find_txt6[i][1] + "\t"+find_txt7[i][1] + "\t" + find_txt8[i][1] + "\t" + find_txt9[i][1] + "\t"+find_txt10[i][1] + "\r\n")}}func main() {t1 := time.Now() // get current timeparse1()elapsed := time.Since(t1)fmt.Println("爬虫结束,总共耗时: ", elapsed)}