android 关于zip4j的一些天坑
1.最近的项目中有个需求，就是从oos上下载压缩包并且解压，对swf解密的需求。
2.解压过程中，要显示解压进度。解压成功后对swf文件解密。
3.关于显示解压进度的天坑：网上十片有八篇的方法：
/**
* @param zipFile 需要解压的文件
* @param filePath 解压后的文件目录
* @param isDeleteZip 是否删除解压包
* @throws ZipException
*/
private void unZipFileWithProgress(File zipFile, String filePath, boolean isDeleteZip) throws ZipException {
String usbOrTfPath = zipFile.getAbsolutePath();
ZipFile zFile = new ZipFile(zipFile);
zFile.setFileNameCharset("GBK");
if (!zFile.isValidZipFile()) {
if (zipFileImp != null) {
flag_unZip = false;
zipFileImp.copyAndUnPackFailed("文件不合法或不存在" + zipFile.getAbsolutePath());
}
Log.e("======", "文件不合法或不存在" + zipFile.getAbsolutePath());
return;
}
File destDir = new File(filePath); // ��ѹĿ¼
if (destDir.isDirectory() && !destDir.exists()) {
destDir.mkdir();
}
if (zFile.isEncrypted()) {
// zFile.setPassword(password); // 设置解压密码
}
// if (totalWork != 0) {
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
flag_unZip = true;
ProgressMonitor progressMonitor = zFile.getProgressMonitor();
int precentDone = 1;
boolean isFileeixst = false;
while (flag_unZip) {
Log.i("TTFFGG", "RRRR");
File nomorlFile = new File(usbOrTfPath);
if (nomorlFile != null && nomorlFile.exists()) {
isFileeixst = true;
} else {
isFileeixst = false;
if (zipFileImp != null) {
flag_unZip = false;
zipFileImp.usbHasTakeOut("发现U盘拔出");
}
}
// 每隔50ms,发送一个解压进度出去
// if (progressMonitor.getTotalWork() > 0) {
precentDone = progressMonitor.getPercentDone();
//
if (zipFileImp != null) {
if (precentDone != 0 && lastProgress == 0) {
//开始
Logger.i("解压SSS1::" + progressMonitor.getTotalWork() + ":::" + progressMonitor.getWorkCompleted());
zipFileImp.copyAndUnPackProgress(precentDone * 80 / 100);
lastProgress = precentDone;
} else if (precentDone != 0 && lastProgress != 0) {
Logger.i("解压SSS2::" + progressMonitor.getTotalWork() + ":::" + progressMonitor.getWorkCompleted());
zipFileImp.copyAndUnPackProgress(precentDone * 80 / 100);
lastProgress = precentDone;
} else if (precentDone == 0 && lastProgress != 0) {
Logger.i("解压SSS3::" + progressMonitor.getTotalWork() + ":::" + progressMonitor.getWorkCompleted());
//if (progressMonitor.getTotalWork() != 0 && progressMonitor.getWorkCompleted() != 0) {
if (progressMonitor.getTotalWork() == progressMonitor.getWorkCompleted()) {
// flag_unZip = false;
if (zipFileImp != null) {
Thread.sleep(2500);
File nomorlFile2 = new File(usbOrTfPath);
if (nomorlFile2 != null && nomorlFile2.exists() && isFileeixst) {
Log.i("copy materials==", "解压成功" + zipFile.getAbsolutePath());
flag_unZip = false;
zipFileImp.copyAndUnPackSuccess();
} else {
if (zipFileImp != null) {
flag_unZip = false;
zipFileImp.usbHasTakeOut("发现U盘拔出");
}
Log.i("copy materials==", "发现U盘拔出" + usbOrTfPath);
}
}
}
}
}
}
} catch (Exception e) {
Log.i("copy materials==", "解压失败" + e.getMessage());
if (zipFileImp != null) {
flag_unZip = false;
zipFileImp.copyAndUnPackFailed(e.getMessage().toString());
}
} finally {
if (isDeleteZip) {
flag_unZip = false;
zipFile.delete();//将原压缩文件删除
}
}
}
});
thread.start();
zFile.setRunInThread(true); //true 在子线程中进行解压 , false主线程中解压
zFile.extractAll(filePath); //将压缩文件解压到filePath中...
}1.这个方法有个很大的问题就是，进度不完整，解压成功的判定有很大的漏洞（当解压文件在U盘，解压过程中拔出U盘竟然会走解压成功的判定！！！）
progressMonitor.getTotalWork() == progressMonitor.getWorkCompleted()2.尚且没有好的解决办法
3.只能采取第二种解压方法但也有局限（必须是多个文件的压缩包）
/**
* 课件整包，解压方法
*
* @param archive
* @param unicode
* @param decompressDir
* @param uiHandler
* @param allCount
*/
public static void unZipFileByZip4j(final String archive, final String unicode, final String decompressDir, final Handler uiHandler, final int allCount, UnZipCallBack unZipCallBack) {
stopUnzip = false;
try {
int currentProcess = 0;
int oldProcess = 0;
long startTime = System.currentTimeMillis();
ZipFile zipFile2 = new ZipFile(archive);
FileHeader fileHeader = null;
//设置编码格式
zipFile2.setFileNameCharset(unicode);
if (!zipFile2.isValidZipFile()) {
Log.e("======", "文件不合法或不存在");
return;
}
List fileHeaderList = zipFile2.getFileHeaders();
for (int i = 0; i < fileHeaderList.size(); i++) {
if(!stopUnzip){
fileHeader = fileHeaderList.get(i);
zipFile2.extractFile(fileHeader, decompressDir);
ProgressMonitor progressMonitor = zipFile2.getProgressMonitor();
currentProcess = (i + 1) * allCount / fileHeaderList.size();
if (currentProcess != oldProcess && currentProcess < 101) {
oldProcess = currentProcess;
Message message = new Message();
Bundle bundle = new Bundle();
message.what = Constants.unzipCourse;
bundle.putInt("currentTotal", currentProcess);
message.obj = bundle;
uiHandler.sendMessage(message);
}
}
}
if(!stopUnzip){
Log.e("======", "解压成功！");
unZipCallBack.onSuccess(archive);
long endTime = System.currentTimeMillis();
Log.e("======", "耗时：" + (endTime - startTime) + "ms");
}
} catch (Exception e) {
if(!stopUnzip){
Log.e("======", e.toString());
unZipCallBack.onFail(e.toString(), archive);
}
}
}