如何在android中的sqlite中保存json中的数据

public class MyDatabaseHelper extends SQLiteOpenHelper {
    public static final String DATABASE_NAME = "my_database.db";
    public static final String TABLE_NAME = "my_table";
    public static final String COLUMN_ID = "id";
    public static final String COLUMN_JSON = "json";

    public MyDatabaseHelper(Context context) {
        super(context, DATABASE_NAME, null, 1);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
        String createTable = "CREATE TABLE " + TABLE_NAME + " (" +
                COLUMN_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
                COLUMN_JSON + " TEXT)";
        db.execSQL(createTable);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
        String dropTable = "DROP TABLE IF EXISTS " + TABLE_NAME;
        db.execSQL(dropTable);
        onCreate(db);
    }

    public void insertJson(String json) {
        SQLiteDatabase db = this.getWritableDatabase();
        ContentValues contentValues = new ContentValues();
        contentValues.put(COLUMN_JSON, json);
        db.insert(TABLE_NAME, null, contentValues);
        db.close();
    }

    public Cursor getAllJson() {
        SQLiteDatabase db = this.getWritableDatabase();
        String query = "SELECT * FROM " + TABLE_NAME;
        return db.rawQuery(query, null);
    }
}