java - 无法获取类包的类型签名..Line

Question

该示例是使用 GWT 和 Objectify 版本 5.0.3 实现的。当我尝试保存文档实例时会产生这种情况。我收到错误:

无法获取 Line 类的类型签名

你有一个想法吗？

@SuppressWarnings("serial")

@Entity
public class GenericEntity implements Serializable {

     @Id  protected Long id;

}



@SuppressWarnings("serial")

@Entity

public class Document extends GenericEntity implements Serializable {

     @Index  private String name;

     @Serialize  private List<Session> sessions = new ArrayList<Session>();

}



@SuppressWarnings("serial")

@Entity

public class Session extends GenericEntity implements Serializable {

     private Date date;

     @Serialize  private Vector<Line> transectsH = new Vector<Line>();

     @Serialize  private HashMap<Point, Line> mapperHorizontalLines = newHashMap<Point, Line>();

}



@SuppressWarnings("serial")

@Entity

public class Point extends GenericEntity implements Serializable {

     private double x;

     private double y;

}



@SuppressWarnings("serial")

@Entity

public class Line extends GenericEntity implements Serializable {

     private Point coordinate;

     private Image image;

     private Object data;

}

Answer 1

当您尝试序列化某些内容时，您会收到 GWT 的异常。可能是因为 GWT-RPC 无法序列化 Object 类型声明的内容。