java.net.URL类的跨域获取数据

随便来个测试类：用了阿凡达数据http://www.avatardata.cn/的API接口

package test;

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;

public class TestURL {
	public static void main(String[] args) {
		URL url;
		try {
			url = new URL("http://api.avatardata.cn/Constellation/Query?key=4cbc88d0c1e04f649378ab3d98c2e902&consName=双鱼座&type=today");
			
	        HttpURLConnection urlcon = (HttpURLConnection)url.openConnection();
	        urlcon.connect();         //获取连接
	        InputStream in=urlcon.getInputStream();
	        BufferedReader br=new BufferedReader(new InputStreamReader(in));
	        StringBuffer sb=new StringBuffer();
	        String str="";
	        while ((str=br.readLine())!=null) {
				sb.append(str);
				
			}
	        System.out.println(sb);
		} catch (MalformedURLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}
}