问ObjectMapper限制

EN

static class MyDtoAccessLevel {
    private String stringValue = "hidden";
}

public static void main(String[] args) throws JsonProcessingException {
    ObjectMapper mapper = new ObjectMapper();
    mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
    MyDtoAccessLevel dtoObject = new MyDtoAccessLevel();
    System.out.println(mapper.writeValueAsString(dtoObject));
    //prints {"stringValue":"hidden"}
}