java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase: /data/user/0/com.example.mywriteproject/databases/DB

这个异常通常是因为在关闭数据库连接之后，尝试再次访问数据库造成的。请尝试在使用完数据库后，确保及时关闭数据库连接，以避免这个异常的出现。可以在使用完数据库后，调用 close() 方法关闭数据库连接。如果你使用了 SQLiteOpenHelper，那么可以在 onDestroy() 方法中关闭数据库连接，如下所示：

@Override
protected void onDestroy() {
    super.onDestroy();
    dbHelper.close();
}

其中，dbHelper 是你创建的 SQLiteOpenHelper 对象。如果你手动创建了 SQLiteDatabase 对象，可以在使用完之后，调用 close() 方法关闭数据库连接，如下所示：

database.close();

其中，database 是你创建的 SQLiteDatabase 对象。

相关问题

java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase:

This error occurs when you try to access a closed SQLiteDatabase object. This can happen when you try to perform a database operation on a SQLiteDatabase object which has already been closed.

To resolve this error, you need to ensure that you are not trying to access a closed SQLiteDatabase object. You can do this by checking the state of the SQLiteDatabase object before performing any operation on it.

Here is an example of how you can avoid this error:

1. Open the SQLiteDatabase object:

SQLiteDatabase db = dbHelper.getWritableDatabase();

2. Check the state of the SQLiteDatabase object:

if (db.isOpen()) {
    // Perform database operations here
} else {
    // Handle the case where the SQLiteDatabase object is closed
}

3. Close the SQLiteDatabase object when you are done with it:

db.close();

By following these steps, you can avoid the IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase error.

[ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit [ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit [ERROR][org.lo[ERROR][org.logstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit gstash.Logstash ] java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

这个错误是由Logstash引起的，它意味着Logstash在处理过程中遇到了一个错误并停止了运行。具体的错误信息是(java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit)。这个错误可能由多种原因引起，比如配置文件错误、输入插件或输出插件的问题等。你可以查看Logstash的日志文件或控制台输出来获取更详细的错误信息，并尝试解决它。