英文:
Embedded entity "with Text" reading from originaly stored as Blob
问题
除了第一个带有可工作答案的问题之外，我无法对以下内容进行反序列化处理：
private @Serialize List<ProduktSprache> produktsprachen;
新的类如下所示，以 Blob 形式存储，最初有两个字段定义为 Text：
import java.io.Serializable;
import com.googlecode.objectify.annotation.Serialize;
public class ProduktSprache implements Serializable {
private static final long serialVersionUID = 1L;
private String sprache;
private String name;
private String details;
private String detailsText; // TEXT
private String detailsTextHTML; // TEXT
}
英文:
in addition to the first question with working answer
I was not able to deserialize the following
private @Serialize List<ProduktSprache> produktsprachen;
the new class looks like this stored as Blob with orginaly having two fields defined as Text:
import java.io.Serializable;
import com.googlecode.objectify.annotation.Serialize;
public class ProduktSprache implements Serializable {
private static final long serialVersionUID = 1L;
private String sprache;
private String name;
private String details;
private String detailsText; // TEXT
private String detailsTextHTML; // TEXT
答案1
得分: 0
这里很难确定发生了什么，但听起来您有一些通过Java序列化序列化（java serialization）到字段中的数据。为了弄清楚这个问题，我建议尽量简化处理。
序列化数据被写入实体中作为类型Blob。因此，第一步是将您的produktsprachen字段更改为类型Blob。现在您可以加载该实体，然后得到一个要处理的byte[]数据。
接下来，尝试解码那个byte[]。使用ObjectInputStream来读取内容并检查实际存在的内容。您在那里找到的任何结构都是您最终需要在Objectify实体类中用作@Serialized字段类型的内容。
英文:
It's really hard to tell what's going on here, but it sounds like you have some data that was serialized (with java serialization) into the field. To figure this out, I'd try to simplify it as much as possible.
Serialized data is written as type Blob in the entity. So the first step is to change your produktsprachen field to type Blob. Now you can load the entity and you have a byte[] of data to work with.
Next, try to decode that byte[]. Use an ObjectInputStream to read the contents and inspect what you actually have present. Whatever structure you find there is what you eventually need to use as your @Serialized field type in your Objectify entity class.
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