如何在ORMLite中指定对象自定义序列化？

如何在ORMLite中指定对象自定义序列化？

因此，基本上，您的持久化器应以以下方式实现：

public class MyFieldClassPersister extends StringType {    private static final MyFieldClassPersister INSTANCE = new MyFieldClassPersister();    private MyFieldClassPersister() {        super(SqlType.STRING, new Class<?>[] { MyFieldClass.class });    }    public static MyFieldClassPersister getSingleton() {        return INSTANCE;    }    @Override    public Object javaToSqlArg(FieldType fieldType, Object javaObject) {        MyFieldClass myFieldClass = (MyFieldClass) javaObject;        return myFieldClass != null ? getJsonFromMyFieldClass(myFieldClass) : null;    }    @Override    public Object sqlArgToJava(FieldType fieldType, Object sqlArg, int columnPos) {        return sqlArg != null ? getMyFieldClassFromJson((String) sqlArg) : null;    }    private String getJsonFromMyFieldClass(MyFieldClass myFieldClass) {        // logic here    }    private MyFieldClass getMyFieldClassFromJson(String json) {        // logic here    }}

您应该在

onCreate

您的

OrmLiteSqliteOpenHelper

课堂方法中注册它

    @Override    public void onCreate(SQLiteDatabaseHolder holder, ConnectionSource connectionSource) { try {     //...     DataPersisterManager      .registerDataPersisters(MyFieldClassPersister.getSingleton()); } catch (SQLException e) {     // log exception }    }

然后可以在模型中使用它，如下所示：

@DatabaseField(persisterClass = MyFieldClassPersister.class, columnName = "column_name")protected MyFieldClass myFieldClass;