Question

package crawler;

import org.apache.http.client.*;
import org.apache.http.client.methods.*;

class Crawler{

    public static void main(String args[]){

    HttpClient httpclient = new HttpClient();     // **HERE!!!!!!!!!**

    GetMethod getMethod = new GetMethod("http://www.google.com");

    int statusCode = httpclient.executeMethod(getMethod);

    System.out.println("response=" + getMethod.getResponseBodyAsString());;

    getMethod.releaseConnection();

    }

}

来自Apache Httpclient的HttpClient。

代码：

@SuppressWarnings("deprecation")
public interface HttpClient

如何解决问题“HttpClient httpclient = new HttpClient();”？谢谢！

Answer 1

HttpClient是一个界面。你不能这样做。

正确的方法是

HttpClient client = HttpClientBuilder.create().build();

Answer 2

您无法实例化界面。您必须实现它或创建一个匿名类（仍然是实现）

如何在java中实例化类型

2 个答案: