package _20191213;

import java.net.MalformedURLException;

import java.net.URL;

/**

 * URL测试类

 * @author TEDU

 *

 */

public class URLTest {

	public static void main(String[] args) throws MalformedURLException {

		URL url = new URL("https://www.cnblogs.com/Scorpicat/category/1596649.html");

		System.out.println(url.getProtocol());

		System.out.println(url.getFile());

		System.out.println(url.getAuthority());

		System.out.println(url.getDefaultPort());

		System.out.println(url.getPort());

		System.out.println(url.getQuery());

		System.out.println(url.getHost());

		System.out.println(url.getRef());

		System.out.println(url.getUserInfo());

	}

}

package _20191213;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.URL;

public class DownloadAWebPage {

	public static void main(String[] args) throws IOException {

		//目标地址

		URL url = new URL("https://gy.anjuke.com/?pi=navi-tencent-qq-mz");

		//流创建：选择源，选择流，读取，关闭

		BufferedReader br = new BufferedReader(new InputStreamReader(url.openStream(),"utf-8"));

		BufferedWriter bw = new BufferedWriter(new FileWriter(new File("web.txt")));

		char[] cbuf = new char[1024*8];

		String content;

		while((content = br.readLine())!=null) {

			System.out.println(content);

			bw.write(content);

			bw.newLine();

			bw.flush();

		}

		bw.close();

		br.close();

	}

}