WIFIDownloadService.java

package com.roboo.like.google;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.LinkedList;
import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.os.Looper;
import android.widget.Toast;

import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.roboo.like.google.models.CommentItem;
import com.roboo.like.google.models.NewsItem;
import com.roboo.like.google.models.SubNewsTypeItem;
import com.roboo.like.google.news.utils.NewsContentUtils;
import com.roboo.like.google.news.utils.NewsListUtils;
import com.roboo.like.google.utils.CommentUtils;
import com.roboo.like.google.utils.FileUtils;
import com.roboo.like.google.utils.MD5Utils;

public class WIFIDownloadService extends Service
{
	/** 有进行离线下载的新闻栏目数据 */
	private LinkedList<SubNewsTypeItem> mData;
	/** 同步辅助类 */
	private CyclicBarrier mCyclicBarrier;
	private ImageLoader mImageLoader;
	private long mStartTime;
	private Runnable mDownloadFinishRunnable = new Runnable()
	{
		public void run()
		{
			stopSelf();
			Looper.prepare();
			Toast.makeText(getBaseContext(), "所有新闻都下载完成", Toast.LENGTH_SHORT).show();
			Looper.loop();
			System.out.println("所有的任务都完成   耗时  = " + (System.currentTimeMillis() - mStartTime));
		}
	};

	public IBinder onBind(Intent intent)
	{
		return null;
	}

	public void onCreate()
	{
		super.onCreate();
		mData = SubNewsTypeItem.handleNewsType(this);
		mCyclicBarrier = new CyclicBarrier(mData.size(), mDownloadFinishRunnable);
		mStartTime = System.currentTimeMillis();
		for (int i = 0; i < mData.size(); i++)
		{
			new DownloadThread(mData.get(i), mCyclicBarrier).start();
		}

		mImageLoader = ImageLoader.getInstance();
		ImageLoaderConfiguration imageLoaderConfiguration = new ImageLoaderConfiguration.Builder(this).discCacheFileNameGenerator(new Md5FileNameGenerator()).build();
		mImageLoader.init(imageLoaderConfiguration);
	}

	private class DownloadThread extends Thread
	{
		private SubNewsTypeItem mTypeItem;
		private CyclicBarrier barrier;

		public DownloadThread(SubNewsTypeItem mTypeItem, CyclicBarrier barrier)
		{
			super();
			this.mTypeItem = mTypeItem;
			this.barrier = barrier;
		}

		public void run()
		{
			try
			{
				persistentData();
			}
			catch (IOException e)
			{
				e.printStackTrace();
			}
			catch (InterruptedException e)
			{
				e.printStackTrace();
			}
			catch (BrokenBarrierException e)
			{
				e.printStackTrace();
			}
			catch (Exception e)
			{
				e.printStackTrace();
			}
		}

		/** 保存与新闻有关的数据到本地 */
		private void persistentData() throws Exception, InterruptedException, BrokenBarrierException
		{
			long startTime1 = System.currentTimeMillis();
			System.out.println("开始下载 " + mTypeItem.name);
			LinkedList<NewsItem> newsListData = NewsListUtils.getNewsList(mTypeItem.url, 1);
			saveNewsListData(newsListData, mTypeItem);
			if (null != newsListData)
			{
				for (NewsItem item : newsListData)
				{
					long startTime2 = System.currentTimeMillis();
					LinkedList<String> newsContentData = NewsContentUtils.getNewsDataList(item.getUrl());
					LinkedList<String> tmpNewsContentData = new LinkedList<String>();
					for (String str : newsContentData)
					{
						// if (str.startsWith(BaseActivity.PREFIX_IMG_URL))
						// {
						// mImageLoader.loadImage(str, new SimpleImageLoadingListener());
						// str ="file://"+ mImageLoader.getDiscCache().get(str).getAbsolutePath();
						// }
						tmpNewsContentData.add(str);
					}
					saveNewsContentData(tmpNewsContentData, item.getUrl());

					System.out.println("下载完成新闻内容 " + item.getTitle() + " 耗时  = " + (System.currentTimeMillis() - startTime2));

					long startTime3 = System.currentTimeMillis();
					String commentUrl = GoogleApplication.BASE_COMMENT_URL + "&newsid=" + item.getNewsId() + "&page=" + 1;
					LinkedList<CommentItem> newsCommentData = CommentUtils.getCommentList(commentUrl);
					saveNewsCommentData(newsCommentData, commentUrl);
					System.out.println("下载完成新闻评论 " + item.getTitle() + " 耗时  = " + (System.currentTimeMillis() - startTime3));
				}
			}
			System.out.println(mTypeItem.name + " 下载完成 ::  耗时  = " + (System.currentTimeMillis() - startTime1));
			barrier.await();
		}
	}

	/** 将新闻列表保存到本地 */
	private void saveNewsListData(LinkedList<NewsItem> data, SubNewsTypeItem mTypeItem)
	{
		File dirFile = FileUtils.getFileCacheDir(this, FileUtils.TYPE_NEWS_LIST);
		File dataFile = new File(dirFile, MD5Utils.generate(mTypeItem.url));
		if (dataFile.exists())
		{
			dataFile.delete();
			System.out.println("删除  ：： " + mTypeItem.name + " 文件");

		}
		try
		{
			ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(dataFile));
			objectOutputStream.writeObject(data);
			objectOutputStream.close();
			GoogleApplication.TEST = true;
			if (GoogleApplication.TEST)
			{
				System.out.println("新闻::列表::对象写入文件成功 :: 文件路径 = " + dataFile.getAbsolutePath());
			}
		}
		catch (FileNotFoundException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

	/** 将新闻列表中的每一条新闻数据保存到本地 */
	private void saveNewsContentData(LinkedList<String> data, String newsUrl)
	{
		File dirFile = FileUtils.getFileCacheDir(this, FileUtils.TYPE_NEWS_CONTENT);
		File dataFile = new File(dirFile, MD5Utils.generate(newsUrl));
		try
		{
			ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(dataFile));
			objectOutputStream.writeObject(data);
			objectOutputStream.close();
			GoogleApplication.TEST = true;
			if (GoogleApplication.TEST)
			{
				System.out.println("新闻::内容::对象写入文件成功 :: 文件路径 = " + dataFile.getAbsolutePath());
			}
		}
		catch (FileNotFoundException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

	/** 将每一条新闻对应的评论保存到本地 */
	private void saveNewsCommentData(LinkedList<CommentItem> data, String commentUrl)
	{

		File dirFile = FileUtils.getFileCacheDir(this, FileUtils.TYPE_NEWS_COMMENT);
		File dataFile = new File(dirFile, MD5Utils.generate(commentUrl));
		try
		{
			ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(dataFile));
			objectOutputStream.writeObject(data);
			objectOutputStream.close();
			GoogleApplication.TEST = true;
			if (GoogleApplication.TEST)
			{
				System.out.println("新闻::评论::对象写入文件成功 :: 文件路径 = " + dataFile.getAbsolutePath());
			}
		}
		catch (FileNotFoundException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

}