Java reptile entry to the master (V) - setting configuration information request

Setting configuration information request

Get request configuration information in terms of time is provided as an example, other configurations may refer to the documentation class RequestConfig

Creating HttpConfigTest.java

package crawler.test;

import org.apache.http.client.config.RequestConfig;
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 HttpConfigTest {

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

        //创建HttpGet对象，设置url访问地址
        HttpGet httpGet = new HttpGet("https://www.baidu.com");

        //配置请求信息
        RequestConfig config = RequestConfig.custom().setConnectTimeout(100)    //创建连接的最长时间，单位ms
                .setConnectionRequestTimeout(500)   //设置获取链接的最长时间，单位ms
                .setSocketTimeout(10*1000)  //设置数据传输的最长时间，单位ms
                .build();

        //给Get请求设置请求信息
        httpGet.setConfig(config);

        CloseableHttpResponse response = null;

        try {
            //使用HttpClient发起请求，获取response
            response = httpClient.execute(httpGet);

            if (response.getStatusLine().getStatusCode() == 200) {
                String content = EntityUtils.toString(response.getEntity(), "utf8");
//              输出content的长度来表示程序执行成功
                System.out.println(content.length());
            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
//            关闭response和httpClient
            try {
                response.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                httpClient.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

Because a single request for a general network problem does not occur, so the results are output to the result should be the same HttpGetTest.java