Java SQLiteDatabaseCorruptException:数据库磁盘映像格式不正确

这一次我的程序遇到了麻烦。我已经在互联网上搜索了这个问题的解决方案，但是我还没有找到，所以就这样

我正在尝试从远程服务器下载SQLite数据库。它似乎下载得很好，我可以从手机上取下文件并查看它。看起来不错。但是，当我的程序尝试读取数据库时，我得到：

android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed

因此，我删除了服务器上的数据库和电话上的数据库，然后跳到创建数据库并将其提交给服务器的活动。它做得很好，现在数据库已经在手机和服务器上重新创建。我可以打开它们，它们看起来很好

我重新启动程序，我的微调器没有填充数据，我得到了相同的错误

下面是填充微调器的代码

    private void fillSpinner(){
    mDbHelper = new myDbAdapter(this);
    mDbHelper.open();
    Cursor c = mDbHelper.fetchColumns(new String[] {"_id","name"});

    if ( ! c.moveToFirst() ){

        mDbHelper.createRow("Create Name");
        c = mDbHelper.fetchColumns(new String[] {"_id","name"});

    }


    // create an array to specify which fields we want to display
    String[] from = new String[]{"name"};
    // create an array of the display item we want to bind our data to
    int[] to = new int[]{android.R.id.text1};
    // create simple cursor adapter
    SimpleCursorAdapter adapter =
        new SimpleCursorAdapter(this, android.R.layout.simple_spinner_item, c, from, to );
    mDbHelper.close();

    adapter.setDropDownViewResource( android.R.layout.simple_spinner_dropdown_item );
    // get reference to our spinner
    c.close();
    s.setAdapter(adapter);

}

这是fetchColumns方法，仅供参考，因为它用于尝试访问数据库中的数据

    public Cursor fetchColumns(String[] colnames) {
    Cursor mCursor = database.query(DATABASE_TABLE, colnames, null, 
            null, null, null, null);
    if (mCursor != null) {
        mCursor.moveToFirst();
    }
    return mCursor;
}

Logcat为我指明了这个方法的方向。上面提到的错误指出getWritableDatabase（）是罪魁祸首。数据库不是空的，我可以用sqlite数据库浏览器查看内容

    public SQLiteDatabase open() throws SQLException {
    dbHelper = new myDbHelper(context);
    database = dbHelper.getWritableDatabase();

    return database;
}

下面是下载数据库的方法

    public void downloadFile(String file_name) throws IOException {

    URL url = new URL(file_url + file_name);
    URLConnection connection = url.openConnection();
    InputStream response = connection.getInputStream();

    FileOutputStream fos = new FileOutputStream(local_file_path + file_name);
    byte data[] = new byte[1024];
    fos.write(data);
    fos.close();
    response.close();
}

有人知道是什么导致了这个问题吗？我已经调试并跟踪了堆栈，这一切似乎都来自open（）方法。这是堆栈跟踪

    11-05 19:39:32.861: INFO/Database(9084): sqlite returned: error code = 11, msg = 
            database corruption found by source line 40107
    11-05 19:39:32.861: INFO/Database(9084): sqlite returned: error code = 11, msg =         database disk image is malformed
    11-05 19:39:32.861: ERROR/Database(9084): CREATE TABLE android_metadata failed
    11-05 19:39:32.881: ERROR/Database(9084): Failed to setLocale() when constructing, closing the database
    11-05 19:39:32.881: ERROR/Database(9084): android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.native_setLocale(Native Method)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:1950)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1818)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:817)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:851)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:844)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:540)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:203)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98)
    11-05 19:39:32.881: ERROR/Database(9084):     at com.project.myDbAdapter.open(myDbAdapter.java:42)
    11-05 19:39:32.881: ERROR/Database(9084):     at com.project.Main.fillSpinner(Main.java:77)
    11-05 19:39:32.881: ERROR/Database(9084):     at com.project.Main.onCreate(Main.java:40)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.os.Handler.dispatchMessage(Handler.java:99)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.os.Looper.loop(Looper.java:123)
    11-05 19:39:32.881: ERROR/Database(9084):     at android.app.ActivityThread.main(ActivityThread.java:4627)
    11-05 19:39:32.881: ERROR/Database(9084):     at java.lang.reflect.Method.invokeNative(Native Method)
    11-05 19:39:32.881: ERROR/Database(9084):     at java.lang.reflect.Method.invoke(Method.java:521)
    11-05 19:39:32.881: ERROR/Database(9084):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
    11-05 19:39:32.881: ERROR/Database(9084):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
    11-05 19:39:32.881: ERROR/Database(9084):     at dalvik.system.NativeStart.main(Native Method)
    11-05 19:39:32.901: ERROR/Database(9084): Deleting and re-creating corrupt database /data/data/com.project/databases/names
    11-05 19:39:32.901: ERROR/Database(9084): android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.native_setLocale(Native Method)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.setLocale(SQLiteDatabase.java:1950)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1818)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:817)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:851)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:844)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:540)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:203)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:98)
    11-05 19:39:32.901: ERROR/Database(9084):     at com.project.myDbAdapter.open(myDbAdapter.java:42)
    11-05 19:39:32.901: ERROR/Database(9084):     at com.project.Main.fillSpinner(SBMain.java:77)
    11-05 19:39:32.901: ERROR/Database(9084):     at com.project.Main.onCreate(SBMain.java:40)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.os.Handler.dispatchMessage(Handler.java:99)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.os.Looper.loop(Looper.java:123)
    11-05 19:39:32.901: ERROR/Database(9084):     at android.app.ActivityThread.main(ActivityThread.java:4627)
    11-05 19:39:32.901: ERROR/Database(9084):     at java.lang.reflect.Method.invokeNative(Native Method)
    11-05 19:39:32.901: ERROR/Database(9084):     at java.lang.reflect.Method.invoke(Method.java:521)
    11-05 19:39:32.901: ERROR/Database(9084):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
    11-05 19:39:32.901: ERROR/Database(9084):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
    11-05 19:39:32.901: ERROR/Database(9084):     at dalvik.system.NativeStart.main(Native Method)
    11-05 19:39:33.311: INFO/ActivityManager(66): Displayed activity com.project.Main: 552 ms (total 552 ms)

---

我没有关闭光标。

是的。你并不是在复制文件

public void downloadFile(String file_name) throws IOException {

    URL url = new URL(file_url + file_name);
    URLConnection connection = url.openConnection();
    InputStream response = connection.getInputStream();

    FileOutputStream fos = new FileOutputStream(local_file_path + file_name);
    byte data[] = new byte[1024];

    //WHERE'S THE BEEF?

    fos.write(data);
    fos.close();
    response.close();
}

此外，手动编写复制代码容易出错。我制作了apache commons的精简版：

召唤

---

好的，我添加了行并取出了fos.write（数据）。似乎没有任何错误，并且文件正在复制，我可以拉它并查看条目，但微调器没有填充？：（我自己从来没有使用过带光标适配器的微调器。我帮不了什么忙。太棒了，已经修复。谢谢你的帮助。发布了一个使用工作代码Sweet的编辑！我想你是“迷你公共空间”libs的用户2。只是想一想。最后调用“fos.close（）”，以确保输出流被刷新，并且不保留打开的文件句柄。

public void downloadFile(String file_name) throws IOException {

    URL url = new URL(file_url + file_name);
    URLConnection connection = url.openConnection();
    InputStream response = connection.getInputStream();

    FileOutputStream fos = new FileOutputStream(local_file_path + file_name);
    byte data[] = new byte[1024];

    //WHERE'S THE BEEF?

    fos.write(data);
    fos.close();
    response.close();
}

IOUtils.copy(response, fos);