<!--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();

    }
}