2020年8月11日 · @JsonValue annotation is used to indicate that the return value of annotated method (with no args) is to be used as the single value to serialize rather than collecting all properties of the object. Usually the getter should return a simple scalar type (e.g. String or Number), but it can be any serializable type.

2023年4月14日 · @JsonValue indicates a single method the library will use to serialize the entire instance. For example, in an enum, we annotate the getName with @JsonValue so that any such entity is serialized via its name:

@JsonValue allows to serialize an entire object using its single method. Example @JsonValue

2024年1月8日 · Another simple way of controlling the marshaling output for an enum is using the @JsonValue annotation on a getter: public enum Distance { ... @JsonValue public String getMeters() { return meters; } }

Jackson's @JsonValue annotation offers developers a powerful tool for customizing the serialized representation of an object. By choosing a specific method's return value as the serialization output, developers can achieve cleaner and more succinct JSON …

2017年11月29日 · @JsonValue The @JsonValue annotation is used at the method level. This annotation tells Jackson to use this method to generate the JSON string from the Java object.

Usually value will be of a simple scalar type (String or Number), but it can be any serializable type (Collection, Map or Bean). At most one method of a Class can be annotated with this annotation; if more than one is found, an exception may be thrown.

2019年9月26日 · @JsonEnumDefaultValue (added in 2.8): annotation used for defining a default value when deserializing unknown Enum values. Requires config READ_UNKNOWN_ENUM_VALUES_USING_DEFAULT_VALUE feature to be enabled. See example snippet in Deserialization Features.

@JsonValue allows annotated field or getter method to be used as a single value. In this post, we are going to look at it in detail.

2020年2月19日 · The @JsonValue annotation is useful at the method level. We can use this annotation to generate a JSON string from java object. If we want to print a serialized object then override the toString() method. But using @JsonValue annotation, we can define a way in which java object is serialized. Syntax