类文件

这节课的地址不能用了,所以get请求返回的的不是200而是403

package cn.itcast.crawler.test;

import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.net.URIBuilder;

import java.net.URISyntaxException;

public class HttpGetParamTest {

    public static void main(String[] args) throws Exception {
        //创建HttpClient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //设置请求地址是: https://yun.itheima.com/search?keys=Java
        //创建URIBuilder
        URIBuilder uriBuilder=new URIBuilder("http://yun.itheima.com/search");
        //设置参数
        uriBuilder.setParameter("keys","Java");
        //创建HttpGet对象,url访问地址
        HttpGet httpGet = new HttpGet(uriBuilder.build());

        System.out.println("这是我们发起请求的信息:"+httpGet);
        CloseableHttpResponse response = null;
        try {
        //使用HttpClient发起请求,获取response
            response = httpClient.execute(httpGet);
            //解析响应
            if(response.getCode()==200){
                String content = EntityUtils.toString(response.getEntity(), "utf8");
                System.out.println(content.length());
            }
        } catch (Exception e) {
            e.printStackTrace();
        }finally {
            //关闭response
            try {
                response.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            try {
                httpClient.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        //解析响应

    }
}