@JsonFilter throws "JsonMappingException: Can not resolve BeanPropertyFilter"
Is it possible to selectively determine when the @JsonFilter annotation gets used at runtime?
I'm getting JsonMappingException exception (see below) when I don't provide the filter.
Background:
I learned from a recent StackOverflow post that I can use @JsonFilter to dynamically filter the bean properties getting serialized. This works great. After adding @JsonFilter("apiFilter") to my domain class and with the addition of this code in my jax-rs service (using the CXF implementation), I am able to dynamically filter the properties returned by my RESTful API:
// shortened for brevity
FilterProvider filters = new SimpleFilterProvider().addFilter("apiFilter", SimpleBeanPropertyFilter.filterOutAllExcept(filterProperties));
return mapper.filteredWriter(filters).writeValueAsString(user);
The problem is there are different service calls where I don't want to apply the filter at all. In those cases I want to return the entire domain class without filtering any properties. In the case where I just try to return the domain class I'm getting an exception as follows:
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not resolve BeanPropertyFilter with id 'apiFilter'; no FilterProvider configured
at org.codehaus.jackson.map.ser.BeanSerializer.findFilter(BeanSerializer.java:252)
at org.codehaus.jackson.map.ser.BeanSerializer.serializeFieldsFiltered(BeanSerializer.java:216)
at org.codehaus.jackson.map.ser.BeanSerializer.serialize(BeanSerializer.java:140)
Answer
I know it's already been answered but for any newcommers Jackson has actually added the ability to not fail on missing filters (JACKSON-650):
You just need to call
SimpleFilterProvider.setFailOnUnknownId(false) and you won't get this exception.