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@ -15,7 +15,6 @@ import java.net.HttpURLConnection; |
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import java.net.MalformedURLException; |
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import java.net.URL; |
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import java.util.Properties; |
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/** |
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* Created by lyy on 2015/8/25. |
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* 下载工具类 |
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@ -23,7 +22,7 @@ import java.util.Properties; |
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public class DownLoadUtil { |
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private static final String TAG = "DownLoadUtil"; |
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//下载监听
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private IDownloadListener mListener; |
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private DownloadListener mListener; |
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/** |
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* 线程数 |
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*/ |
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@ -40,10 +39,11 @@ public class DownLoadUtil { |
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boolean isNewTask = true; |
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private int mCancelNum = 0; |
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private int mStopNum = 0; |
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public DownLoadUtil() { |
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} |
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public DownloadListener getListener(){ |
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return mListener; |
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} |
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/** |
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* 获取当前下载位置 |
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* |
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@ -52,25 +52,21 @@ public class DownLoadUtil { |
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public long getCurrentLocation() { |
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return mCurrentLocation; |
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} |
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public boolean isDownloading() { |
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return isDownloading; |
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} |
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/** |
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* 取消下载 |
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*/ |
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public void cancelDownload() { |
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isCancel = true; |
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} |
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/** |
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* 停止下载 |
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*/ |
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public void stopDownload() { |
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isStop = true; |
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} |
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/** |
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* 多线程断点续传下载文件,暂停和继续 |
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* |
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@ -99,7 +95,7 @@ public class DownLoadUtil { |
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} |
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} catch (Exception e) { |
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e.printStackTrace(); |
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mListener.onFail(); |
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failDownload("下载失败,记录文件被删除"); |
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return; |
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} |
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new Thread(new Runnable() { |
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@ -111,13 +107,13 @@ public class DownLoadUtil { |
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HttpURLConnection conn = (HttpURLConnection) url.openConnection(); |
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conn.setRequestMethod("GET"); |
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conn.setRequestProperty("Charset", "UTF-8"); |
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conn.setConnectTimeout(TIME_OUT); |
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conn.setConnectTimeout(TIME_OUT * 4); |
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conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); |
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conn.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"); |
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conn.connect(); |
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int len = conn.getContentLength(); |
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if (len < 0) { //网络被劫持时会出现这个问题
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mListener.onFail(); |
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failDownload("下载失败,网络被劫持"); |
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return; |
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} |
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int code = conn.getResponseCode(); |
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@ -136,13 +132,16 @@ public class DownLoadUtil { |
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isNewTask = true; |
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} else { |
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for (int i = 0; i < THREAD_NUM; i++) { |
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if(pro.getProperty(dFile.getName() + "_record_" + i) == null){ |
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if (pro.getProperty(dFile.getName() + "_record_" + i) == null) { |
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Object state = pro.getProperty(dFile.getName() + "_state_" + i); |
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if (state != null && Integer.parseInt(state + "") == 1) { |
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continue; |
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} |
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isNewTask = true; |
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break; |
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} |
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} |
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} |
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int blockSize = fileLength / THREAD_NUM; |
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SparseArray<Thread> tasks = new SparseArray<>(); |
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int[] recordL = new int[THREAD_NUM]; |
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@ -165,7 +164,6 @@ public class DownLoadUtil { |
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} |
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mListener.onComplete(); |
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isDownloading = false; |
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System.gc(); |
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return; |
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} |
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continue; |
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@ -180,6 +178,8 @@ public class DownLoadUtil { |
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startL = r; |
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recordL[rl] = i; |
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rl++; |
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}else { |
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isNewTask = true; |
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} |
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if (isNewTask) { |
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recordL[rl] = i; |
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@ -205,20 +205,21 @@ public class DownLoadUtil { |
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} |
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} |
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} else { |
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Log.e(TAG, "下载失败,返回码:" + code); |
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isDownloading = false; |
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System.gc(); |
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mListener.onFail(); |
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failDownload("下载失败,返回码:" + code); |
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} |
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} catch (IOException e) { |
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Log.e(TAG, "下载失败【downloadUrl:" + downloadUrl + "】\n【filePath:" + filePath + "】" + Util.getPrintException(e)); |
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isDownloading = false; |
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mListener.onFail(); |
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failDownload("下载失败【downloadUrl:" + downloadUrl + "】\n【filePath:" + filePath + "】" + Util.getPrintException(e)); |
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} |
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} |
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}).start(); |
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} |
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private void failDownload(String msg){ |
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Log.e(TAG, msg); |
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isDownloading = false; |
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stopDownload(); |
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mListener.onFail(); |
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System.gc(); |
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} |
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/** |
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* 多线程下载任务类,不能使用AsyncTask来进行多线程下载,因为AsyncTask是串行执行的,这种方式下载速度太慢了 |
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*/ |
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@ -226,14 +227,13 @@ public class DownLoadUtil { |
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private static final String TAG = "DownLoadTask"; |
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private DownloadEntity dEntity; |
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private String configFPath; |
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public DownLoadTask(DownloadEntity downloadInfo) { |
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this.dEntity = downloadInfo; |
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configFPath = dEntity.context.getFilesDir().getPath() + "/temp/" + dEntity.tempFile.getName() + ".properties"; |
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} |
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@Override |
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public void run() { |
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long currentLocation = 0; |
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try { |
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Log.d(TAG, "线程_" + dEntity.threadId + "_正在下载【" + "开始位置 : " + dEntity.startLocation + ",结束位置:" + dEntity.endLocation + "】"); |
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URL url = new URL(dEntity.downloadUrl); |
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@ -242,10 +242,10 @@ public class DownLoadUtil { |
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conn.setRequestProperty("Range", "bytes=" + dEntity.startLocation + "-" + dEntity.endLocation); |
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conn.setRequestMethod("GET"); |
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conn.setRequestProperty("Charset", "UTF-8"); |
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conn.setConnectTimeout(TIME_OUT); |
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conn.setConnectTimeout(TIME_OUT * 4); |
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conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)"); |
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conn.setRequestProperty("Accept", "image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/x-shockwave-flash, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"); |
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conn.setReadTimeout(2000); //设置读取流的等待时间,必须设置该参数
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conn.setReadTimeout(TIME_OUT * 24); //设置读取流的等待时间,必须设置该参数
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InputStream is = conn.getInputStream(); |
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//创建可设置位置的文件
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RandomAccessFile file = new RandomAccessFile(dEntity.tempFile, "rwd"); |
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@ -254,17 +254,15 @@ public class DownLoadUtil { |
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byte[] buffer = new byte[1024]; |
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int len; |
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//当前子线程的下载位置
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long currentLocation = dEntity.startLocation; |
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currentLocation = dEntity.startLocation; |
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while ((len = is.read(buffer)) != -1) { |
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if (isCancel) { |
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Log.d(TAG, "++++++++++ thread_" + dEntity.threadId + "_cancel ++++++++++"); |
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break; |
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} |
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if (isStop) { |
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break; |
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} |
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//把下载数据数据写入文件
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file.write(buffer, 0, len); |
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synchronized (DownLoadUtil.this) { |
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@ -275,7 +273,6 @@ public class DownLoadUtil { |
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} |
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file.close(); |
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is.close(); |
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if (isCancel) { |
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synchronized (DownLoadUtil.this) { |
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mCancelNum++; |
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@ -284,7 +281,6 @@ public class DownLoadUtil { |
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if (configFile.exists()) { |
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configFile.delete(); |
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} |
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if (dEntity.tempFile.exists()) { |
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dEntity.tempFile.delete(); |
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} |
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@ -296,7 +292,6 @@ public class DownLoadUtil { |
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} |
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return; |
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} |
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//停止状态不需要删除记录文件
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if (isStop) { |
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synchronized (DownLoadUtil.this) { |
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@ -313,7 +308,6 @@ public class DownLoadUtil { |
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} |
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return; |
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} |
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Log.i(TAG, "线程【" + dEntity.threadId + "】下载完毕"); |
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writeConfig(dEntity.tempFile.getName() + "_state_" + dEntity.threadId, 1 + ""); |
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mListener.onChildComplete(dEntity.endLocation); |
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@ -323,25 +317,44 @@ public class DownLoadUtil { |
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if (configFile.exists()) { |
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configFile.delete(); |
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} |
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mListener.onComplete(); |
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isDownloading = false; |
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mListener.onComplete(); |
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System.gc(); |
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} |
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} catch (MalformedURLException e) { |
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e.printStackTrace(); |
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isDownloading = false; |
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mListener.onFail(); |
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synchronized (DownLoadUtil.this) { |
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try { |
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String location = String.valueOf(currentLocation); |
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writeConfig(dEntity.tempFile.getName() + "_record_" + dEntity.threadId, location); |
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failDownload("下载链接异常"); |
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} catch (IOException e1) { |
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e1.printStackTrace(); |
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} |
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} |
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} catch (IOException e) { |
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Log.e(TAG, "下载失败【" + dEntity.downloadUrl + "】" + Util.getPrintException(e)); |
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isDownloading = false; |
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mListener.onFail(); |
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synchronized (DownLoadUtil.this) { |
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try { |
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String location = String.valueOf(currentLocation); |
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writeConfig(dEntity.tempFile.getName() + "_record_" + dEntity.threadId, location); |
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failDownload("下载失败【" + dEntity.downloadUrl + "】" + Util.getPrintException(e)); |
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} catch (IOException e1) { |
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e1.printStackTrace(); |
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} |
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} |
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} catch (Exception e) { |
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Log.e(TAG, "获取流失败" + Util.getPrintException(e)); |
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isDownloading = false; |
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mListener.onFail(); |
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synchronized (DownLoadUtil.this) { |
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try { |
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String location = String.valueOf(currentLocation); |
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writeConfig(dEntity.tempFile.getName() + "_record_" + dEntity.threadId, location); |
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failDownload("获取流失败" + Util.getPrintException(e)); |
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} catch (IOException e1) { |
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e1.printStackTrace(); |
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} |
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} |
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} |
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} |
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/** |
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* 将记录写入到配置文件 |
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* |
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@ -354,8 +367,6 @@ public class DownLoadUtil { |
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Util.saveConfig(configFile, pro); |
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} |
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} |
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/** |
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* 子线程下载信息类 |
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*/ |
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@ -368,7 +379,6 @@ public class DownLoadUtil { |
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long endLocation; |
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File tempFile; |
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Context context; |
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public DownloadEntity(Context context, long fileSize, String downloadUrl, File file, int threadId, long startLocation, long endLocation) { |
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this.fileSize = fileSize; |
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this.downloadUrl = downloadUrl; |
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@ -380,5 +390,56 @@ public class DownLoadUtil { |
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} |
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} |
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public static class DownloadListener implements IDownloadListener { |
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} |
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@Override |
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public void onResume(long resumeLocation) { |
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} |
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@Override |
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public void onCancel() { |
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} |
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@Override |
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public void onFail() { |
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} |
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@Override |
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public void onPreDownload(HttpURLConnection connection) { |
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} |
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@Override |
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public void onProgress(long currentLocation) { |
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} |
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@Override |
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public void onChildComplete(long finishLocation) { |
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} |
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@Override |
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public void onStart(long startLocation) { |
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} |
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@Override |
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public void onChildResume(long resumeLocation) { |
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} |
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@Override |
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public void onStop(long stopLocation) { |
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} |
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@Override |
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public void onComplete() { |
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} |
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} |
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} |