Passing in a LocalDate to a REST endpoint

[Matt Raible]

Hey guys,

When I created my 21-Points application with a 2.x version of JHipster, I was able to use JodaTime and the following worked:

/**
* GET /bp-by-days -> get all the blood pressure readings for a particular month.
*/
@RequestMapping(value = "/bp-by-month/{date}")
@Timed
public ResponseEntity<BloodPressureByPeriod> getByMonth(@PathVariable @DateTimeFormat(pattern = "yyyy-MM") LocalDate date) {
LocalDate firstDay = date.dayOfMonth().withMinimumValue();
LocalDate lastDay = date.dayOfMonth().withMaximumValue();

With the latest version, I’m using the the Java Time API and trying something similar:

public ResponseEntity<BloodPressureByPeriod> getByMonth(@PathVariable @DateTimeFormat(pattern = "yyyy-MM") LocalDate date) {
LocalDate firstDay = date.withDayOfMonth(1);
LocalDate lastDay = date.withDayOfMonth(date.lengthOfMonth());

However, this results in an error:

2016-10-03 15:13:39.744 WARN 92872 --- [ main] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type [java.lang.String] to required type [java.time.LocalDate]; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.PathVariable @org.springframework.format.annotation.DateTimeFormat java.time.LocalDate] for value '2016-09'; nested exception is java.time.format.DateTimeParseException: Text '2016-09' could not be parsed: Unable to obtain LocalDate from TemporalAccessor: {Year=2016, MonthOfYear=9},ISO of type java.time.format.Parsed

MockHttpServletRequest:
HTTP Method = GET
Request URI = /api/bp-by-month/2016-09
Parameters = {}
Headers = {}

Handler:
Type = org.jhipster.health.web.rest.BloodPressureResource
Method = public org.springframework.http.ResponseEntity<org.jhipster.health.web.rest.dto.BloodPressureByPeriod> org.jhipster.health.web.rest.BloodPressureResource.getByMonth(java.time.LocalDate)

Async:
Async started = false
Async result = null

Resolved Exception:
Type = org.springframework.web.method.annotation.MethodArgumentTypeMismatchException

Thanks in advance for any ideas.

Matt

[Christophe Bornet]

Hi Matt,

Have you tried using a java.time.YearMonth instead ?

Regards.

[Matt Raible]

Thanks Christophe - that works!

Something related to dates I discovered this morning - the following two dependencies depend on Joda Time, so it can be confusing when working with dates and imports.

org.springframework.boot:spring-boot-starter-data-elasticsearch

fr.ippon.spark.metrics:metrics-spark-reporter

I tried excluding joda-time from these dependencies, but then my app fails to start.

Cheers,

Matt

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