Question

我控制favorites的功能运行良好，但在LG G2这样的设备上我遇到no such column错误，

我的代码：

 public boolean adjustFavorites(Info info) {
    String format = "INSERT INTO %s VALUES(%d,'%s','%s','%s');";
    String deleteFormat = "DELETE FROM %s WHERE %s=%d ;";

    long id = info.getId();
    if (!isExist(id)) {
        String query = String.format(format, TABLE_FAVORITE, id, info.getContent(), info.getTitle(), info.getParent());
        database.execSQL(query);
    } else {
        String query = String.format(deleteFormat, TABLE_FAVORITE, DB_COL_ID, id);
        database.execSQL(query);
    }
    return true;
}

private boolean isExist(long id) {
    String format = "SELECT * FROM %s WHERE %s=%d ;";
    String query = String.format(format, TABLE_FAVORITE, DB_COL_ID, id);

    Cursor cursor = database.rawQuery(query, null);
    if (cursor != null && cursor.moveToFirst())
        if (cursor.getCount() > 0)
            return true;
    return false;
}

错误：

11-14 20:47:28.916  29227-29227/ir.mostafa.book E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: ir.mostafa.book, PID: 29227
    android.database.sqlite.SQLiteException: no such column: ۱۴۱۰۸۷۶۰۹۷۸۰۷ (code 1): , while compiling: SELECT * FROM favorites WHERE id=۱۴۱۰۸۷۶۰۹۷۸۰۷ ;
            at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
            at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:892)
            at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:503)
            at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:726)
            at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
            at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
            at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
            at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1415)
            at android.database.sqlite.SQLiteDatabase.rawQuery(SQLiteDatabase.java:1354)
            at ir.mostafa.book.db.DataBase.isExist(DataBase.java:177)
            at ir.mostafa.book.db.DataBase.adjustFavorites(DataBase.java:162)
            at ir.mostafa.book.activities.ContentViewer.onContextItemSelected(ContentViewer.java:279)
            at android.app.Activity.onMenuItemSelected(Activity.java:2664)
            at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:361)
            at com.android.internal.policy.impl.PhoneWindow$DialogMenuCallback.onMenuItemSelected(PhoneWindow.java:4037)
            at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
            at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
            at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
            at com.android.internal.view.menu.MenuDialogHelper.onClick(MenuDialogHelper.java:167)
            at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:941)
            at android.widget.AdapterView.performItemClick(AdapterView.java:299)
            at android.widget.AbsListView.performItemClick(AbsListView.java:1158)
            at android.widget.AbsListView$PerformClick.run(AbsListView.java:2957)
            at android.widget.AbsListView$3.run(AbsListView.java:3849)
            at android.os.Handler.handleCallback(Handler.java:733)
            at android.os.Handler.dispatchMessage(Handler.java:95)
            at android.os.Looper.loop(Looper.java:136)
            at android.app.ActivityThread.main(ActivityThread.java:5105)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:515)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
            at dalvik.system.NativeStart.main(Native Method)

Answer 1

问题不在于如何插入值，而在于如何构建SQL查询。您正在使用String.format，它会对字符串进行本地化。不是格式化字符串，为什么不使用参数化查询：

Cursor cursor = database.query(TABLE_FAVORITE, null, DB_COL_ID+"=?", 
    new String[] { String.valueOf(id) }, null, null, null, null);

Sqlite代码（1）错误，没有这样的列

1 个答案: