itcast-crawler-first(CrawlerFirst)

package cn.itcast.crawler;

import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class CrawlerFirst {

    public static void main(String[] args) throws Exception {
        //1.打开浏览器
        CloseableHttpClient httpClient = HttpClients.createDefault();

        //2.输入网址,发起get请求创建HttpGet对象
        HttpGet httpGet = new HttpGet("http://www.itcast.cn");

        //3.按回车,发起请求,返回响应
        CloseableHttpResponse response = httpClient.execute(httpGet);

        //4.解析响应,获取数据


        //判断状态码是否是200
        if(response.getStatusLine().getStatusCode() == 200){
            HttpEntity httpEntity = response.getEntity();
            String content = EntityUtils.toString(httpEntity, "utf8");

            System.out.println(content);
        }
    }
}