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Please, I need help with serializing data.
I have a class called Foo which defines 3 attributes:
public int age; public String name; public String description; How can I serialize this object, but without its description field?
Thanks in advance!
601
If there are fields in Java objects that do not wish to be serialized, we can use the @JsonIgnore annotation in the Jackson library. The @JsonIgnore can be used at the field level, for ignoring fields during the serialization and deserialization.
You can't serialise a class that doesn't implement Serializable , but you can wrap it in a class that does. To do this, you should implement readObject and writeObject on your wrapper class so you can serialise its objects in a custom way. First, make your non-serialisable field transient .
There is no direct way to prevent sub-class from serialization in java. One possible way by which a programmer can achieve this is by implementing the writeObject() and readObject() methods in the subclass and needs to throw NotSerializableException from these methods.
writeValueAsString(currentUser); This will prevent password field to get serialized. Also you will be able to deserialize password fields as it is. Just make sure no filters are applied on the ObjectMapper object.
Use keyword transient:
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