java.util.zip.ZipException:未找到中央目录条目
我有一个代码在模拟器上运行得非常好,但是当我在 Samsung Galaxy Tab 上运行它时,它给出了异常。
我通过套接字从服务器收到一个压缩的 zip 文件,然后我正在提取这些文件。如果我压缩并发送两个或三个文本文件,它在 ie 模拟器和 Galaxy Tab 上都可以正常运行。
但是,如果我压缩并发送一些带有文本或两个图像文件的小图像文件,它会给出:>java.util.zip.ZipException:未找到中央目录条目<在 Galaxy Tab 上,但在模拟器上没有错误。 Zip 文件大小不超过 32 KB,并且我确信文件被正确接收。这是我的解压缩器代码
package com.vsi.vremote;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import android.content.Context;
import android.util.Log;
public class UnCompressor {
private static final String TAG = "UnCompressor";
Context context;
public UnCompressor(Context context) {
this.context = context;
}
private final void copyInputStream(InputStream in, OutputStream out)
throws IOException {
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) >= 0)
out.write(buffer, 0, len);
in.close();
out.close();
}
public final String[] unCompress(String name) {
try {
Log.d(TAG, "Uncompress called");
ZipFile zipFile = new ZipFile(context.getFileStreamPath(name));
Log.d(TAG, "Zip file created");
Enumeration entries = zipFile.entries();
String fileNames[] = new String[zipFile.size()];
int counter = 0;
Log.d(TAG, "Loop strting");
while (entries.hasMoreElements()) {
Log.d(TAG, "Getting next entry");
ZipEntry entry = (ZipEntry) entries.nextElement();
Log.d(TAG, "Extracting file: " + entry.getName());
copyInputStream(
zipFile.getInputStream(entry),
new BufferedOutputStream(context.openFileOutput(
entry.getName(), Context.MODE_PRIVATE)));
fileNames[counter++] = entry.getName();
}
zipFile.close();
return fileNames;
} catch (IOException ioe) {
System.err.println("Unhandled exception:");
ioe.printStackTrace();
return null;
}
}
public final void delete(String fileName) {
context.deleteFile(fileName);
}
}
注意:我刚刚在我的 HTC WildFire 上检查了它,它也可以在这款手机上运行,但 Galaxy TAB :(
I have a code which runs absolutely fine on emulator but when I run it on Samsung Galaxy Tab, it gives Exception.
I am receiving one compressed zip file from server via socket and than I am extracting these file. If I compress and send two or three text files it runs fine on both i.e. emulator and Galaxy Tab.
But if I compress and send some small image file with text or two image files it gives: >java.util.zip.ZipException: Central Directory Entry not found < on Galaxy Tab but no error on emulator. Zip file size does not exceeds 32 KB and I am sure that file is being received correctly. Here is my uncompressor code
package com.vsi.vremote;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import android.content.Context;
import android.util.Log;
public class UnCompressor {
private static final String TAG = "UnCompressor";
Context context;
public UnCompressor(Context context) {
this.context = context;
}
private final void copyInputStream(InputStream in, OutputStream out)
throws IOException {
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) >= 0)
out.write(buffer, 0, len);
in.close();
out.close();
}
public final String[] unCompress(String name) {
try {
Log.d(TAG, "Uncompress called");
ZipFile zipFile = new ZipFile(context.getFileStreamPath(name));
Log.d(TAG, "Zip file created");
Enumeration entries = zipFile.entries();
String fileNames[] = new String[zipFile.size()];
int counter = 0;
Log.d(TAG, "Loop strting");
while (entries.hasMoreElements()) {
Log.d(TAG, "Getting next entry");
ZipEntry entry = (ZipEntry) entries.nextElement();
Log.d(TAG, "Extracting file: " + entry.getName());
copyInputStream(
zipFile.getInputStream(entry),
new BufferedOutputStream(context.openFileOutput(
entry.getName(), Context.MODE_PRIVATE)));
fileNames[counter++] = entry.getName();
}
zipFile.close();
return fileNames;
} catch (IOException ioe) {
System.err.println("Unhandled exception:");
ioe.printStackTrace();
return null;
}
}
public final void delete(String fileName) {
context.deleteFile(fileName);
}
}
Note: I just checked it on my HTC WildFire, it is also working on this mobile but galaxy TAB :(
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它只是将这些文件添加到 zip 文件中(参见屏幕显示),但我必须从中创建一个 zip 文件那些 zip 文件部分。我只是将 zip 文件分成几个部分并上传到服务器上。现在我想在我的应用程序中下载这些文件并将 zip 文件重建到应用程序中。
Its only adding those file into a zip file (see screenshow) but i have to make a zip file from those zip file parts. I simply devided my zip file into parts and uploaded on the server. now i want to download these files in the my app and rebuild the zip file into the app.