<!--爬虫仅支持1.8版本的jdk-->
<!-- 爬虫需要的依赖-->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.2</version>
</dependency>

<!-- 爬虫需要的日志依赖-->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.25</version>
</dependency>
爬虫配置文件位置及存放位置

package day02;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.net.URISyntaxException;public class pacohngde {public static void main(String[] args) throws IOException, URISyntaxException {//注意这个方法是爬取网址所有位置//1.打开浏览器,创建Httpclient对象//        CloseableHttpclient httpclient = Httpclients.createDefault();CloseableHttpClient aDefault = HttpClients.createDefault();// 组合示例https://search.bilibili.com/all?keyword=药水哥&search_source=1//创建URTBuilder  说白就是把网站组合起来使用搜索功能URIBuilder uriBuilder = new URIBuilder("https://search.bilibili.com/all");//设置参数uriBuilder.setParameter("keyword","药水哥").setParameter("search_source","1");//2.输入网址，发起get请求创建HttpGet对象 输入你需要爬取的网址HttpGet httpGet = new HttpGet(uriBuilder.build());System.out.println("要爬取的网址"+httpGet);//3.按回车，发起请求，返回响应，使用httpclient对象发起请求CloseableHttpResponse response = aDefault.execute(httpGet);//4.解析响应，获取数据//判断状态码是否是200     200为正常型号  其他为异常if(response.getStatusLine().getStatusCode()== 200){//获取爬取数据HttpEntity httpEntity =response.getEntity();//将爬取数据解析为utf-8格式String content = EntityUtils.toString(httpEntity,"utf8");//打印System.out.println(content);}//释放资源response.close();//关闭网页aDefault.close();}
}