package com.coderising.download; import org.junit.After; import org.junit.Before; import org.junit.Test; import com.coderising.download.api.ConnectionManager; import com.coderising.download.api.DownloadListener; import com.coderising.download.impl.ConnectionManagerImpl; public class FileDownloaderTest { boolean downloadFinished = false; @Before public void setUp() throws Exception { } @After public void tearDown() throws Exception { } @Test public void testDownload() { String url = "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1489836924867&di=68eb122b4c92d6b5e2f3af6d7331290e&imgtype=0&src=http%3A%2F%2Fcdn.duitang.com%2Fuploads%2Fitem%2F201210%2F21%2F20121021202014_kAAr3.thumb.600_0.jpeg"; String localFile = "c:\\aa.jpg"; FileDownloader downloader = new FileDownloader(url,localFile); ConnectionManager cm = new ConnectionManagerImpl(); downloader.setConnectionManager(cm); downloader.setListener(new DownloadListener() { @Override public void notifyFinished() { 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,休眠五秒"); //休眠5秒 Thread.sleep(5000); } catch (InterruptedException e) { e.printStackTrace(); } } System.out.println("下载完成!"); } }