Jackson JsonMappingException: Unrecognized column 'C': known columns {"A","B"}

Question

how do i create partial representation from myBean

class MyBean{ A, B, C }

i would like to create csv only for A,B properties

using the following code throw the exception bellow

CsvSchema schema = CsvSchema.builder().
                    .addColumn("A")
                    .addColumn("B")
                    .build();

CsvMapper mapper = new CsvMapper(); ObjectWriter writer = mapper.writer(schema);

byte[] csv = writer.writeValueAsBytes(bean);

getting the exception :

JsonMappingException: Unrecognized column 'C': known columns {"A","B"}

i'm using jackson 2.7.3

Thanks

Possible duplicate of [Ignoring new fields on JSON objects using Jackson](https://stackoverflow.com/questions/5455014/ignoring-new-fields-on-json-objects-using-jackson) — Aaron, Jul 13 '17 at 09:10
did you take a look at JsonView in Jackson? I had similar question a few days ago, I hope this helps : https://stackoverflow.com/questions/45004348/jackson-remove-some-values-from-json-and-keep-some-null-values — Seyed Ali Roshan, Jul 13 '17 at 09:12

score 8 · Answer 1 · answered Feb 27 '18 at 16:13

8

Configure CSV Mapper like this

 CsvMapper mapper = new CsvMapper(); 
 mapper.configure(JsonGenerator.Feature.IGNORE_UNKNOWN,true);

answered Feb 27 '18 at 16:13

M1r1

score 3 · Answer 2 · answered Jul 13 '17 at 09:11

3

Annotate your class with @JsonIgnoreProperties(ignoreUnknown = true)

@JsonIgnoreProperties(ignoreUnknown = true)
class MyBean{ A, B, C }

answered Jul 13 '17 at 09:11

mlecz

2 Answers2