如何实时获取第三方api接口数据？

package test;

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

public class test {

public static void main(String[] args) {
	String path="https://api.douban.com/v2/book/isbn/:9787806479223";
	try {
		//创建一个URL对象
		URL url=new URL(path);
		//创建一个URLConnection连接对象
		URLConnection conn=url.openConnection();
		//创建一个输入流来接收网页
		InputStream in=conn.getInputStream();
		//字节流——>字符流
		InputStreamReader isr = new InputStreamReader(in);
		//从字符输入流中读取文本，缓冲各个字符，从而实现字符、数组和行的高效读取。
		BufferedReader br = new BufferedReader(isr);
		
		String line = null;
		StringBuffer sb=new StringBuffer();
		
		while ((line=br.readLine())!=null) {
			sb.append(line);
        }
		
        System.out.println(sb);
	} catch (MalformedURLException e) {
		e.printStackTrace();
	} catch (IOException e) {
		e.printStackTrace();
	}
}