1、首先百度搜索webmagic网站,网址如下:https://github.com/code4craft/webmagic/releases/tag/WebMagic-0.7.3
2、接下来下载webmagic-0.7.3-all.tar.gz 压缩包解压
3、创建一个项目,在项目中创建一个lib文件夹,将WebMagic中的jar包复制到lib文件夹里面,选取所有的jar包(按下shift可以全选),右键->build path,然后创建一个class 文件,具体执行代码如下:
package test20190428;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import us.codecraft.webmagic.Page;
import us.codecraft.webmagic.Site;
import us.codecraft.webmagic.Spider;
import us.codecraft.webmagic.processor.PageProcessor;
public class BookProcessor implements PageProcessor{
private static int count=1;
@Override
public Site getSite() {
// TODO Auto-generated method stub
Site site=Site.me();
site.setTimeOut(3000);
site.setRetryTimes(3);
site.setSleepTime(3000);
return site;
}
@Override
public void process(Page page) {
// TODO Auto-generated method stub
if(count==1)
{
//获取每一页的网址链接
List <String> all = page.getHtml().regex("/1_1999/\\d+.html").all();
//获取每一页的网址链接,字符串拼接
Set set = new TreeSet();
set.addAll(all);
Iterator<String> iterator = all.iterator();
while(iterator.hasNext())
{
String url2="https://www.biquyun.com/"+iterator.next();
page.addTargetRequest(url2);
}
count++;
}
if(count==2)
{
//获取每一页的页面文字
List <String> all2 = page.getHtml().xpath("//div[@id='content']/text()").all();
Iterator<String> iterator = all2.iterator();
while(iterator.hasNext())
{
System.out.println(iterator.next());
}
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
BookProcessor bookprocessor = new BookProcessor();
Spider create = Spider.create(bookprocessor);
create.addUrl("https://www.biquyun.com/1_1999/");
create.thread(5);
create.run();
}
}
实现结果: