Only using @JsonIgnore during serialization, but not deserialization

java json spring annotations jackson
chubbsondubs picture chubbsondubs · Sep 20, 2012 · Viewed 323.9k times · Source

I have a user object that is sent to and from the server. When I send out the user object, I don't want to send the hashed password to the client. So, I added @JsonIgnore on the password property, but this also blocks it from being deserialized into the password that makes it hard to sign up users when they don't have a password.

How can I only get @JsonIgnore to apply to serialization and not deserialization? I'm using Spring JSONView, so I don't have a ton of control over the ObjectMapper.

Things I've tried:

  1. Add @JsonIgnore to the property
  2. Add @JsonIgnore on the getter method only

Answer

pb2q picture pb2q · Sep 20, 2012

Exactly how to do this depends on the version of Jackson that you're using. This changed around version 1.9, before that, you could do this by adding @JsonIgnore to the getter.

Which you've tried:

Add @JsonIgnore on the getter method only

Do this, and also add a specific @JsonProperty annotation for your JSON "password" field name to the setter method for the password on your object.

More recent versions of Jackson have added READ_ONLY and WRITE_ONLY annotation arguments for JsonProperty. So you could also do something like:

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

Docs can be found here.

Related questions

JsonMappingException: No suitable constructor found for type [simple type, class ]: can not instantiate from JSON object

I am getting the following error when trying to get a JSON request and process it: org.codehaus.jackson.map.JsonMappingException: No suitable constructor found for type [simple type, class com.myweb.ApplesDO]: can not instantiate from JSON object (need …

Read More
Spring MVC - How to return simple String as JSON in Rest Controller

My question is essentially a follow-up to this question. @RestController public class TestController { @RequestMapping("/getString") public String getString() { return "Hello World"; } } In the above, Spring would add "Hello World" into the response body. How can I return a String as …

Read More
POST request via RestTemplate in JSON

I didn't find any example how to solve my problem, so I want to ask you for help. I can't simply send POST request using RestTemplate object in JSON Every time I get: org.springframework.web.client.HttpClientErrorException: 415 Unsupported Media …

Read More