String to json online formatter12/20/2023 the rest is the same as the User class Private String =, pattern = Date createdDate Next, let’s create a UserIgnoreCase class with this annotation and feature: = _CASE_INSENSITIVE_PROPERTIES) To use this feature, we can include it in a class-level annotation. The ACCEPT_CASE_INSENSITIVE_PROPERTIES feature tells the deserializer to match property names case-insensitively. It has predefined a set of options to specify property serialization or deserialization behaviors. The annotation allows us to set a set of JsonFormat.Feature values via the with attribute: = JsonFormat.Feature … ).įurthermore, JsonFormat.Feature is an enum. So next, let’s explore how to achieve that using the annotation. To solve this kind of problem, we must make our deserializer perform case-insensitive deserialization. Now, if we deserialize this JSON document to a User object, UnrecognizedPropertyException will be raised: assertThatThrownBy(() -> new ObjectMapper().readValue(JSON_STRING, User.class)).isInstanceOf(UnrecognizedPropertyException.class) Īs the test above shows, we’ve used Assertj’s exception assertion to verify that the expected exception is thrown. Let’s understand the problem quickly through an example.įirst, let’s say we have a JSON document as the input: static final String JSON_STRING = we can see, the three properties “FIRSTNAME”, “lastname”, and “cReAtEdDaTe” follow completely different letter case rules. The default deserializer cannot automatically recognize the property names in different letter cases.
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