How Can I Control JSON Serialization and Deserialization of Sensitive Data in Spring JSONView?

JSON Serialization and Deserialization Control with @JsonIgnore

In Spring JSONView applications, customizing how properties are serialized and deserialized can be challenging. A common scenario is when we want to exclude sensitive data like hashed passwords during serialization while still being able to deserialize them.

To achieve this, we employ the @JsonIgnore annotation on the password property. However, this can also prevent the property from being deserialized, making user sign-ups difficult when they don't have an existing password.

The solution depends on the Jackson version used. Prior to 1.9, we could use @JsonIgnore on the getter method only. For newer versions, we add the following annotations:

@JsonProperty(access = JsonProperty.Access.WRITE_ONLY): This annotation on the setter method allows serialization but blocks deserialization.

Alternatively, using the READ_ONLY access type argument of @JsonProperty also accomplishes this:

@JsonProperty(access = JsonProperty.Access.READ_ONLY)
private String password;

These annotations ensure that the password property is only serialized during JSON conversion but can still be deserialized during object creation.

By following these techniques, we can selectively control JSON serialization and deserialization of sensitive properties, providing flexibility and security in web applications.

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