Ignore specific field on serialization with Jackson

Question

I'm using the Jackson library.

I want to ignore a specific field when serializing/deserializing, so for example:

public static class Foo {     public String foo = "a";     public String bar = "b";      @JsonIgnore     public String foobar = "c"; } 

Should give me:

{ foo: "a", bar: "b", } 

But I'm getting:

{ foo: "a", bar: "b", foobar: "c" } 

I'm serializing the object with this code:

ObjectMapper mapper = new ObjectMapper(); String out = mapper.writeValueAsString(new Foo()); 

The real type of the field on my class is an instance of the Log4J Logger class. What am I doing wrong?

Answer 1

Ok, so for some reason I missed this answer.

The following code works as expected:

@JsonIgnoreProperties({"foobar"}) public static class Foo {     public String foo = "a";     public String bar = "b";      public String foobar = "c"; }  //Test code ObjectMapper mapper = new ObjectMapper(); Foo foo = new Foo(); foo.foobar = "foobar"; foo.foo = "Foo"; String out = mapper.writeValueAsString(foo); Foo f = mapper.readValue(out, Foo.class);