小小，这次开始使用webmagic爬取相关的网站，这里爬取的网站为 https://member.vobao.com/  将会对该网站进行爬取，并进行实战。

分析网站

打开devtool查看网站相关的链接。单击下一页的时候，可以看到发起一个请求，这里对这个请求进行解析。

可以看到有以下的一些参数，这里用到的将会是Area1List1，以及 Area2List2 这两个参数。

查看源代码，搜索这两个参数。发现对应于城市列表页面。

使用postman进行测试

这里使用postman进行相关的测试。可以发现输出如下的内容

这里的json发送的文件如下

{"Area1List1":"10","Area2List2":"121","Search.KeyWord":"","Search.AreaID1":"10","Search.AreaID2":"121","Search.AreaID3":"0","Search.PyCode":"0","Search.CompanySymbol":"0","Search.Year":"0","Search.OrderTp":"1","Search.SearchTp":"1","Search.UserLevel":"0","Search.SortRule":"","Search.PageIndex":"1","Search.PageSize":"10","Search.LastHash":"0","Search.TotalPages":"8","Search.TotalCount":"80","sex":"1","X-Requested-With":"XMLHttpRequest"
}

这样就完成了一轮新的基本的测试。

获取链接URL

这里对页面的链接进行获取，获取到相关的URL。

可以发现，我们这里需要的链接是 http://www.syxdg.cn/ 这种类型的链接，所以进行一个正则匹配。书写如下的正则，进行相关的匹配，匹配相关的url。

进行正则匹配的链接如下

page.getHtml().links().regex("(http://www.(.*).cn)").all()

匹配的核心在于

http://www.(.*).cn

使用贪婪算法，匹配www和cn之间的任意字符，进行相关的匹配。

当发现为空的时候进行跳过

if(urls == null || urls.size() == 0){page.setSkip(true);}

并把相关的参数，汇入list集合中

 page.putField("url", urls);

其中需要发送post请求，携带参数

这里需要发送post请求，并且将会需要携带参数，如下

Request request = new Request("https://member.vobao.com/Member/SellerList?Length=6");request.setMethod(HttpConstant.Method.POST);request.setRequestBody(HttpRequestBody.json("{n" +"    "Area1List1":" +  "  +  count   +  "  +",n" +"    "Area2List2":"1",n" +"    "Search.KeyWord":"",n" +"    "Search.AreaID1":"-100",n" +"    "Search.AreaID2":"0",n" +"    "Search.AreaID3":"0",n" +"    "Search.PyCode":"0",n" +"    "Search.CompanySymbol":"0",n" +"    "Search.Year":"0",n" +"    "Search.OrderTp":"1",n" +"    "Search.SearchTp":"1",n" +"    "Search.UserLevel":"0",n" +"    "Search.SortRule":"",n" +"    "Search.PageIndex":"1",n" +"    "Search.PageSize":"10",n" +"    "Search.LastHash":"0",n" +"    "Search.TotalPages":"8",n" +"    "Search.TotalCount":"80",n" +"    "sex":"1",n" +"    "X-Requested-With":"XMLHttpRequest"n" +"}","utf-8"));Spider.create(new vobao()).addRequest(request).addPipeline(new vobaoMysql()).thread(50000).run();

其中，HttpRequestBody将会是json相关的配置信息，将会在Request进行相关的传入，实现request请求的发送。

双重循环

这里需要进行双重循环 由于城市和二级城市，这两个需要做到双重循环，双重循环如下，并且插入的时候也需要做到双重循环。

一级城市循环

int count = 1;for(count = 1; count <= 100; count++) {System.out.println("count: -----------------" +  count);Request request = new Request("https://member.vobao.com/Member/SellerList?Length=6");request.setMethod(HttpConstant.Method.POST);request.setRequestBody(HttpRequestBody.json("{n" +"    "Area1List1":" +  "  +  count   +  "  +",n" +"    "Area2List2":"1",n" +"    "Search.KeyWord":"",n" +"    "Search.AreaID1":"-100",n" +"    "Search.AreaID2":"0",n" +"    "Search.AreaID3":"0",n" +"    "Search.PyCode":"0",n" +"    "Search.CompanySymbol":"0",n" +"    "Search.Year":"0",n" +"    "Search.OrderTp":"1",n" +"    "Search.SearchTp":"1",n" +"    "Search.UserLevel":"0",n" +"    "Search.SortRule":"",n" +"    "Search.PageIndex":"1",n" +"    "Search.PageSize":"10",n" +"    "Search.LastHash":"0",n" +"    "Search.TotalPages":"8",n" +"    "Search.TotalCount":"80",n" +"    "sex":"1",n" +"    "X-Requested-With":"XMLHttpRequest"n" +"}","utf-8"));Spider.create(new vobao()).addRequest(request).addPipeline(new vobaoMysql()).thread(50000).run();}

每创建一次循环，就产生一个一级城市，并开始创建一个新的爬虫。

二级城市循环

这里使用webmagic相关的爬虫，实现二级城市的循环 其核心在于以下参数， 中途经过json的相关的转化，并实现其转化的完成以及失败

// 从body中获取inta和intbString jsonRes = new String(page.getRequest().getRequestBody().getBody());//System.out.println(jsonRes);Gson gson = new Gson();RequestInfo requestInfo = gson.fromJson(jsonRes, RequestInfo.class);// 页数加上//requestInfo.setArea1List1((Integer.parseInt(requestInfo.getArea1List1()) + 1) + "");requestInfo.setArea2List2((Integer.parseInt(requestInfo.getArea2List2()) + 1) + "");System.out.println("Area2List2---------------" + requestInfo.getArea2List2());String resNewJson = gson.toJson(requestInfo);//System.out.println(resNewJson);Request request = new Request("https://member.vobao.com/Member/SellerList?Length=6");request.setMethod(HttpConstant.Method.POST);request.setRequestBody(HttpRequestBody.json(resNewJson,"utf-8"));

全部代码

这里全部代码如下

package com.example.demo;import com.example.demo.db.PingAnMysql;
import com.example.demo.db.vobaoMysql;
import com.example.demo.model.JqBxInfo;
import com.example.demo.model.RequestInfo;
import com.google.gson.Gson;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import us.codecraft.webmagic.Page;
import us.codecraft.webmagic.Request;
import us.codecraft.webmagic.Site;
import us.codecraft.webmagic.Spider;
import us.codecraft.webmagic.model.HttpRequestBody;
import us.codecraft.webmagic.processor.PageProcessor;
import us.codecraft.webmagic.utils.HttpConstant;import java.util.List;public class vobao implements PageProcessor {private Site site = Site.me().setRetryTimes(50000).setSleepTime(0);/*** process the page, extract urls to fetch, extract the data and store** @param page page*/@Overridepublic void process(Page page) {// 从body中获取inta和intbString jsonRes = new String(page.getRequest().getRequestBody().getBody());//System.out.println(jsonRes);Gson gson = new Gson();RequestInfo requestInfo = gson.fromJson(jsonRes, RequestInfo.class);// 页数加上//requestInfo.setArea1List1((Integer.parseInt(requestInfo.getArea1List1()) + 1) + "");requestInfo.setArea2List2((Integer.parseInt(requestInfo.getArea2List2()) + 1) + "");System.out.println("Area2List2---------------" + requestInfo.getArea2List2());String resNewJson = gson.toJson(requestInfo);//System.out.println(resNewJson);Request request = new Request("https://member.vobao.com/Member/SellerList?Length=6");request.setMethod(HttpConstant.Method.POST);request.setRequestBody(HttpRequestBody.json(resNewJson,"utf-8"));// 获取页面urlList<String> urls = page.getHtml().links().regex("(http://www.(.*).cn)").all();if(urls == null || urls.size() == 0){page.setSkip(true);}page.putField("url", urls);page.addTargetRequest(request);}/*** get the site settings** @return site* @see Site*/@Overridepublic Site getSite() {return this.site;}public static void main(String[] args){int count = 1;for(count = 1; count <= 100; count++) {System.out.println("count: -----------------" +  count);Request request = new Request("https://member.vobao.com/Member/SellerList?Length=6");request.setMethod(HttpConstant.Method.POST);request.setRequestBody(HttpRequestBody.json("{n" +"    "Area1List1":" +  "  +  count   +  "  +",n" +"    "Area2List2":"1",n" +"    "Search.KeyWord":"",n" +"    "Search.AreaID1":"-100",n" +"    "Search.AreaID2":"0",n" +"    "Search.AreaID3":"0",n" +"    "Search.PyCode":"0",n" +"    "Search.CompanySymbol":"0",n" +"    "Search.Year":"0",n" +"    "Search.OrderTp":"1",n" +"    "Search.SearchTp":"1",n" +"    "Search.UserLevel":"0",n" +"    "Search.SortRule":"",n" +"    "Search.PageIndex":"1",n" +"    "Search.PageSize":"10",n" +"    "Search.LastHash":"0",n" +"    "Search.TotalPages":"8",n" +"    "Search.TotalCount":"80",n" +"    "sex":"1",n" +"    "X-Requested-With":"XMLHttpRequest"n" +"}","utf-8"));Spider.create(new vobao()).addRequest(request).addPipeline(new vobaoMysql()).thread(50000).run();}}
}

Mysql

这里编写Mysql相关的内容，由于传入的是List，需要实现List的批量插入

package com.example.demo.db;import com.example.demo.model.RequestInfo;
import us.codecraft.webmagic.ResultItems;
import us.codecraft.webmagic.Task;
import us.codecraft.webmagic.pipeline.Pipeline;import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.List;public class vobaoMysql implements Pipeline {/*** Process extracted results.** @param resultItems resultItems* @param task        task*/@Overridepublic void process(ResultItems resultItems, Task task) {List<String> list = resultItems.get("url");for(int i = 0; i < list.size(); i++){try {Class.forName("com.mysql.cj.jdbc.Driver");Connection connection = DriverManager.getConnection("jdbc:mysql://cdb-1yfd1mlm.cd.tencentcdb.com:10056/JqBxInfo", "root", "ABCcba20170607");Statement statement = connection.createStatement();String sql = "insert into url" + " values(" +  """+  list.get(i)   +  """ + ")";System.out.println(sql);int res = statement.executeUpdate(sql);System.out.println(res);}catch (Exception e){}}}
}

所以继续添加循环，实现批量的插入

执行效果

控制台打印出log如下

查看数据库

这里查看数据库相关的信息

这样就完成了列表页面信息的搜集。

明天将会写保单关于页面的信息搜集。

小明菜市场

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