import org.junit.Test;

public class TestURL {

	@Test
	public void readUrl() throws Exception{
		
		URL url = new URL("http://localhost:8088/gress/data/reportData_201401.xml?a=b");
		
		System.out.println(url.getProtocol());
		System.out.println(url.getHost());
		System.out.println(url.getPort());
		System.out.println(url.getPath());
		System.out.println(url.getFile());
		System.out.println(url.getRef());
		System.out.println(url.getQuery());
		
		URLConnection  urlConn = url.openConnection();
		BufferedReader buffReader = new BufferedReader(new InputStreamReader(urlConn.getInputStream()));
		
		String str = null;
		while((str = buffReader.readLine()) != null ){
			System.out.println(str);
		}
		
		buffReader.close();
		
		
	}

}

java之URL(URL,URLConnection)实例