FileDownloaderTest.java

package com.github.miniyk2012.coding2017.coderising.download;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.github.miniyk2012.coding2017.coderising.download.api.ConnectionManager;
import com.github.miniyk2012.coding2017.coderising.download.impl.ConnectionManagerImpl;

public class FileDownloaderTest {
	boolean downloadFinished = false;
	private double time = 0;
	@Before
	public void setUp() throws Exception {
	}

	@After
	public void tearDown() throws Exception {
	}

	@Test
	public void testDownload() {
		
		String url = "http://inews.gtimg.com/newsapp_bt/0/1209438116/1000";
//		String url = "https://www.baidu.com/img/bd_logo.png";
		String filePath = "src/main/resources/downloads/test.png";
        FileDownloader downloader = new FileDownloader(url, filePath);
	
		ConnectionManager cm = new ConnectionManagerImpl();
		downloader.setConnectionManager(cm);
		downloader.setListener(() -> downloadFinished = true);
		
		downloader.execute();
		
		// 等待多线程下载程序执行完毕
		while (!downloadFinished) {
			try {
				System.out.println("还没有下载完成，休眠0.01秒");
				time += 0.01;
				//休眠0.01秒
				Thread.sleep(10);
			} catch (InterruptedException e) {				
				e.printStackTrace();
			}
		}
		System.out.println("下载完成！耗时"+time+"秒");

	}
}