List-JSON conversion

1、List转JSONObjectMappermapper = new ObjectMapper();mapper.setSerializationInclusion(Inclusion.NON_NULL);mapper.setSerializationInclusion(Inclusion.NON_EMPTY);mapper.setPropertyNamingStrategy(PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);System.out.println("{\"button\":"+objectMapper.writeValueAsString(buttons)+"}");2、JSON转ListObjectMappermapper = new ObjectMapper().setVisibility(JsonMethod.FIELD, Visibility.ANY);mapper.configure(DeserializationConfig.Feature.FAIL_ON_UNKNOWN_PROPERTIES,false);JPCallbackjpCallback = mapper.readValue(target,JPCallback.class);