/**
* 该方法的作用: 校验下载完成后的文件流校验值是否和服务端下发的校验值一致 返回true, 表示下载文件与服务端文件一致；否则不一致 默认为MD5校验
*
* @date 2014年7月16日
* @param fileUrl
* @param serverCheckString
* @return
*/
private boolean equalDownloadFileCheckStr(String fileUrl, String serverCheckString) {
// 服务端没返回md5时，不做校验
if (TextUtils.isEmpty(serverCheckString)) {
return true;
}
// 文件不存在，返回校验不通过
File file = FileUtils.getFile(fileUrl);
if (file == null || !file.exists()) {
LOG.e("[method:equalDownloadFileCheckStr]: " + "file is not exist.");
return false;
}
String fileCheckStr = getLocalFileCheckStr(fileUrl);
LOG.i(
"[method:equalDownloadFileCheckStr], "
+ "fileCheckString: "
+ fileCheckStr
+ "\r\n ; serverCheckString: "
+ serverCheckString
+ "\r\n ; url: "
+ fileUrl);
if (null != fileCheckStr) {
if (fileCheckStr.equals(serverCheckString)) {
return true;
} else {
// 删除错误文件
file.delete();
LOG.e("[method:equalDownloadFileCheckStr]: " + "check string is not the same.");
}
}
return false;
}
/**
* 该方法的作用: 获取本地文件加密字符串: 默认为MD5加密
*
* @date 2014年8月23日
* @param filePath
* @return
*/
protected String getLocalFileCheckStr(String filePath) {
File file = FileUtils.getFile(filePath);
InputStream inputStream = null;
String fileCheckStr = "";
try {
inputStream = new FileInputStream(file);
fileCheckStr = MD5.md5sum(inputStream);
} catch (FileNotFoundException e) {
LOG.e("[method:equalDownloadFileCheckStr]: " + e.getMessage(), e);
} finally {
Commons.closeInputStream(inputStream);
}
return fileCheckStr;
}
@Override
public void show(FragmentManager manager, String tag) {
try {
@SuppressWarnings("rawtypes")
Class dialogFragmentClass = getDialogFragmentClass();
Field mDismissed = dialogFragmentClass.getDeclaredField("mDismissed");
mDismissed.setAccessible(true);
mDismissed.setBoolean(this, false);
Field mShownByMe = dialogFragmentClass.getDeclaredField("mShownByMe");
mShownByMe.setAccessible(true);
mShownByMe.setBoolean(this, true);
} catch (Exception e) {
LOG.e(e);
}
FragmentTransaction ft = manager.beginTransaction();
ft.add(this, tag);
ft.commitAllowingStateLoss();
}
/**
* 自定义的DialogFragment,修复show时状态异常的bug（在执行activity的onSaveInstances之后不能再调用show方法）
*
* @author peng
*/
public class TGDialogFragment extends DialogFragment {
private static final Logger LOG = Logger.getLogger(TGDialogFragment.class);
@Override
public void show(FragmentManager manager, String tag) {
try {
@SuppressWarnings("rawtypes")
Class dialogFragmentClass = getDialogFragmentClass();
Field mDismissed = dialogFragmentClass.getDeclaredField("mDismissed");
mDismissed.setAccessible(true);
mDismissed.setBoolean(this, false);
Field mShownByMe = dialogFragmentClass.getDeclaredField("mShownByMe");
mShownByMe.setAccessible(true);
mShownByMe.setBoolean(this, true);
} catch (Exception e) {
LOG.e(e);
}
FragmentTransaction ft = manager.beginTransaction();
ft.add(this, tag);
ft.commitAllowingStateLoss();
}
/**
* 获取DialogFragmentClass
*
* @return
*/
@SuppressWarnings("rawtypes")
private Class getDialogFragmentClass() {
Class superClass = this.getClass().getSuperclass();
while (!(DialogFragment.class.getName().equals(superClass.getName()))) {
superClass = superClass.getSuperclass();
}
return superClass;
}
}
/** MD5校验码检查器 */
public class MD5DownloadFileChecker implements IDownloadFileChecker {
private static final Logger LOG = Logger.getLogger(MD5DownloadFileChecker.class);
@Override
public boolean isFileAlreadDownloaded(TGDownloader downloader, HttpResponse response) {
return false;
}
@Override
public boolean isFileCorrect(TGDownloader downloader, HttpResponse response) {
return equalDownloadFileCheckStr(downloader.getUrl(), downloader.getCheckKey());
}
/**
* 该方法的作用: 校验下载完成后的文件流校验值是否和服务端下发的校验值一致 返回true, 表示下载文件与服务端文件一致；否则不一致 默认为MD5校验
*
* @date 2014年7月16日
* @param fileUrl
* @param serverCheckString
* @return
*/
private boolean equalDownloadFileCheckStr(String fileUrl, String serverCheckString) {
// 服务端没返回md5时，不做校验
if (TextUtils.isEmpty(serverCheckString)) {
return true;
}
// 文件不存在，返回校验不通过
File file = FileUtils.getFile(fileUrl);
if (file == null || !file.exists()) {
LOG.e("[method:equalDownloadFileCheckStr]: " + "file is not exist.");
return false;
}
String fileCheckStr = getLocalFileCheckStr(fileUrl);
LOG.i(
"[method:equalDownloadFileCheckStr], "
+ "fileCheckString: "
+ fileCheckStr
+ "\r\n ; serverCheckString: "
+ serverCheckString
+ "\r\n ; url: "
+ fileUrl);
if (null != fileCheckStr) {
if (fileCheckStr.equals(serverCheckString)) {
return true;
} else {
// 删除错误文件
file.delete();
LOG.e("[method:equalDownloadFileCheckStr]: " + "check string is not the same.");
}
}
return false;
}
/**
* 该方法的作用: 获取本地文件加密字符串: 默认为MD5加密
*
* @date 2014年8月23日
* @param filePath
* @return
*/
protected String getLocalFileCheckStr(String filePath) {
File file = FileUtils.getFile(filePath);
InputStream inputStream = null;
String fileCheckStr = "";
try {
inputStream = new FileInputStream(file);
fileCheckStr = MD5.md5sum(inputStream);
} catch (FileNotFoundException e) {
LOG.e("[method:equalDownloadFileCheckStr]: " + e.getMessage(), e);
} finally {
Commons.closeInputStream(inputStream);
}
return fileCheckStr;
}
}