我从网上收到以下代码,它看起来一切正常,但我得到文件找不到异常…
我在sdcard中有一个名为NewForestPonies.epub的文件
许可：
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
码：
String ZipFileLocation=Environment.getExternalStorageDirectory()+"/NewForestPonies.epub";
String unZipFileLocation=Environment.getExternalStorageDirectory()+"/DEST/";
Decompress decomp=new Decompress(ZipFileLocation,unZipFileLocation,"zip");
decomp.run();
public Decompress(String zipFile,String location,String t) {
super(t);
_zipFile = zipFile;
_location = location;
}
public void run() {
FileInputStream fin=null;
ZipInputStream zin=null;
File file =null;
ZipEntry ze ;
FileOutputStream fout=null;
try{
System.out.println(_zipFile );
System.out.println(_location);
fin = new FileInputStream(_zipFile);
zin = new ZipInputStream(fin);
ze= null;
byte[] buffer = new byte[1024];
int length;
while ((ze = zin.getNextEntry()) != null) {
file = new File((_location +"/" + ze.getName()));
file.getParentFile().mkdirs();
fout= new FileOutputStream(_location + ze.getName());
while ((length = zin.read(buffer))>0) {
fout.write(buffer,length);
}
zin.closeEntry();
fout.close();
}
//MyDownloadListener.progress=70;
zin.close();
}catch(Exception e) {
Log.e("Decompress","unzip",e);
}
finally {
try {
fin.close();
zin.close();
fout.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
ERRROR：
03-20 15:49:15.909: ERROR/Decompress(9479): java.io.FileNotFoundException: /mnt/sdcard/DEST/NewForestPonies/iTunesMetadata.plist (Not a directory) 03-20 15:49:15.909: ERROR/Decompress(9479): at org.apache.harmony.luni.platform.OSFileSystem.open(Native Method) 03-20 15:49:15.909: ERROR/Decompress(9479): at dalvik.system.BlockGuard$WrappedFileSystem.open(BlockGuard.java:239) 03-20 15:49:15.909: ERROR/Decompress(9479): at java.io.FileOutputStream.<init>(FileOutputStream.java:101) 03-20 15:49:15.909: ERROR/Decompress(9479): at java.io.FileOutputStream.<init>(FileOutputStream.java:77) 03-20 15:49:15.909: ERROR/Decompress(9479): at com.AndroidExplorer.Decompress.run(Decompress.java:42) 03-20 15:49:15.909: ERROR/Decompress(9479): at com.AndroidExplorer.DecompressActivity.onCreate(DecompressActivity.java:23) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1715) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1767) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1005) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.os.Handler.dispatchMessage(Handler.java:99) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.os.Looper.loop(Looper.java:132) 03-20 15:49:15.909: ERROR/Decompress(9479): at android.app.ActivityThread.main(ActivityThread.java:4028) 03-20 15:49:15.909: ERROR/Decompress(9479): at java.lang.reflect.Method.invokeNative(Native Method) 03-20 15:49:15.909: ERROR/Decompress(9479): at java.lang.reflect.Method.invoke(Method.java:491) 03-20 15:49:15.909: ERROR/Decompress(9479): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844) 03-20 15:49:15.909: ERROR/Decompress(9479): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602) 03-20 15:49:15.909: ERROR/Decompress(9479): at dalvik.system.NativeStart.main(Native Method)
解决方法
我认为您的代码中的问题是您正在关闭ZipInputStream zin在1st while循环.
使用下面的代码run(),它可以帮助你.
public void run() {
BufferedOutputStream bufferedOutputStream = null;
FileInputStream fileInputStream;
File dest_file = new File(_location);
dest_file.mkdirs(); // creates if destination directory not existed
try {
fileInputStream = new FileInputStream(_zipFile);
ZipInputStream zipInputStream = new ZipInputStream(new BufferedInputStream(fileInputStream));
ZipEntry zipEntry;
while ((zipEntry = zipInputStream.getNextEntry()) != null) {
String zipEntryName = zipEntry.getName();
File file = new File(_location + zipEntryName);
if (file.exists()) {
} else {
if(zipEntry.isDirectory()) {
file.mkdirs();
} else {
byte buffer[] = new byte[1024];
FileOutputStream fileOutputStream = new FileOutputStream(file);
bufferedOutputStream = new BufferedOutputStream(fileOutputStream,1024);
int count;
while ((count = zipInputStream.read(buffer,1024)) != -1) {
bufferedOutputStream.write(buffer,count);
}
bufferedOutputStream.flush();
bufferedOutputStream.close();
}
}
}
zipInputStream.close();
} catch(Exception e) {
Log.e("Decompress",e);
}
}
