SpringBoot TestRestTemplate and LocalDateTime not working - spring-boot

Question

I am using LocalDateTime in my model, after including LocalDateTimeDeserializer,
converted the bean field to
#NotNull
#Column(name = "created")
#JsonDeserialize(using = LocalDateTimeDeserializer.class)
private LocalDateTime created;
and included the
spring.jackson.serialization.WRITE_DATES_AS_TIMESTAMPS = false
property in the SpringBoot's application.properties file, the application is finally able to deserialize the JSON and show properly like,
"created": "2018-04-22T21:21:53.025",
But, when I am doing testing, it ignores the WRITE_DATES_AS_TIMESTAMPS flag, I guess and generates an output for the same string date above like,
"created":{"year":2018,"monthValue":4,"month":"APRIL","dayOfMonth":22,"dayOfYear":112,"dayOfWeek":"SUNDAY","hour":21,"minute":23,"second":16,"nano":986000000,"chronology":{"id":"ISO","calendarType":"iso8601"}}
Please, note that including the property in application.properties in test resources folder did not change anything.
My test configuration looks like,
#SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
#ContextConfiguration
#Category(IntegrationTest.class)
public class ApplicationTests {
....
Do you have any idea on what I am doing wrong?

Answer 1

I had the same issue and the below solution worked for me,
add the below code in your Applicationtests class
protected MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter;
#Autowired
public void setConverters(HttpMessageConverter<?>[] converters) {
this.mappingJackson2HttpMessageConverter = (MappingJackson2HttpMessageConverter)Arrays.asList(converters).stream()
.filter(hmc -> hmc instanceof MappingJackson2HttpMessageConverter)
.findAny()
.orElse(null);
assertNotNull("the JSON message converter must not be null",
this.mappingJackson2HttpMessageConverter);
final ObjectMapper objectMapper = new ObjectMapper();
final JavaTimeModule javaTimeModule = new JavaTimeModule();
objectMapper.registerModule(new Jdk8Module());
objectMapper.registerModule(new ParameterNamesModule(JsonCreator.Mode.PROPERTIES));
mappingJackson2HttpMessageConverter.setObjectMapper(objectMapper);
}
If you want to support your own date formats then add the formatters as well,
//the below customisation is required if you need to support different date formats
javaTimeModule.addSerializer(LocalDateTime.class, new LocalDateTimeCustomSerializer());
javaTimeModule.addDeserializer(LocalDateTime.class, new LocalDateTimeCustomDeserializer());
objectMapper.registerModule(javaTimeModule);
Where the custom classes will looks like,
public class LocalDateTimeCustomSerializer extends LocalDateTimeSerializer {
private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyy-MMM-dd HH:mm:ss");
LocalDateTimeCustomSerializer() {
this(FORMATTER);
}
public LocalDateTimeCustomSerializer(DateTimeFormatter f) {
super(f);
}
#Override
protected DateTimeFormatter _defaultFormatter() {
return FORMATTER;
}
}
and
public class LocalDateTimeCustomDeserializer extends LocalDateTimeDeserializer {
public LocalDateTimeCustomDeserializer() {
this(DateTimeFormatter.ofPattern("yyyy-MMM-dd HH:mm:ss"));
}
public LocalDateTimeCustomDeserializer(DateTimeFormatter formatter) {
super(formatter);
}
}