import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class jiekouTest {
    public static void main(String[] args) {
        try {
        //創建url對象
            URL url=new URL("https://www.v2ex.com/api/nodes/show.json?name=python");
        //打開一個URL連接，並運行客戶端訪問資源。
            URLConnection urlConnection =(HttpURLConnection)url.openConnection();

            urlConnection.connect();//調用URLConnection對象提供的connect方法連接遠程服務  
            InputStream is=urlConnection.getInputStream();//獲取輸入流訪問的資源數據

            //通過bufferedReader來讀取
            BufferedReader buffer=new BufferedReader(new InputStreamReader(is));
            StringBuffer bs=new StringBuffer();//存儲讀取的值
            String l=null;
            //判斷讀取的值存在則存入StringBuffer
            while((l=buffer.readLine())!=null) {
                bs.append(l).append("\n");
            }
            System.out.println(bs.toString());
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }catch (IOException e) {
                e.printStackTrace();
            }
    }

}
 

最後獲取到的輸出

中文亂碼問題解決：
//設置下編碼
BufferedReader buffer=new BufferedReader(new InputStreamReader(is,"utf-8"));

接口測試之java