jodatime

问题 I would like to use Joda-Time to parse dates in the format yyyyMMdd (so the date should have eight digits). I defined my date formatter as follows DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyyMMdd").withZoneUTC(); // a valid eight-digit date String dateValid = "20130814"; DateTime dateJoda = formatter.parseDateTime(dateValid); System.out.println(dateJoda.toString()); // an invalid seven digit date String dateInvalid = "2013081"; dateJoda = formatter.parseDateTime(dateInvalid);

问题 I'm trying to write a simple utility method for adding aninteger number of days to a Joda time instant. Here is my first stab. /** * Adds a number of days specified to the instant in time specified. * * @param instant - the date to be added to * @param numberOfDaysToAdd - the number of days to be added to the instant specified * @return an instant that has been incremented by the number of days specified */ public static Instant addNumberOfDaysToInstant(final Instant instant, final int

问题 I am using a PeriodFormatter to return a string showing the time until an event. The code below keeps creating strings like 1146 hours 39 minutes instead of x days y hours z minutes. Any ideas? Thanks, Nathan PeriodFormatter formatter = new PeriodFormatterBuilder() .printZeroNever() .appendDays() .appendSuffix( "d " ) .appendHours() .appendSuffix( "h " ) .appendMinutes() .appendSuffix( "m " ) .toFormatter(); return formatter.print( duration.toPeriod() ); 回答1: This is because you convert

问题 I've a Spring Boot application with RESTful endpoints that I want to add custom serializers to for joda-time but I can't get the applications default Jackson serailzier to recognize my custom one's. I created RESTFul endpoints using @RepositoryRestResource @RepositoryRestResource(collectionResourceRel = "x", path = "x") public interface XRepository extends PagingAndSortingRepository<X, Long> { } I then have a GET call to return all object X's: http://localhost:8181/x This is my serializer:

问题 I'm trying to do a timestamp validation using joda time-1.6.2 . Please point my error and help me out. Code String timestamp = "2014-09-23T23:03:11Z"; String datePattern = "yyyy-MM-dd'T'HH:mm:ssZ"; try { DateTimeFormatter dateFormatter = DateTimeFormat.forPattern(datePattern); dateFormatter.parseDateTime(timestamp); } catch (Exception e) { LOG.info("Timestamp is invalid format" + e); } Exception INFO: Timestamp is invalid formatjava.lang.IllegalArgumentException: Invalid format: "2014-09

问题 Is it possible to calculate the weeks of one month in jodatime? I need something like this: Month: July Week of Year 27; 1-7. July Week of Year 28; 9-14. July Week of Year 29; 16-21. July Week of Year 30; 23-31. July Month: August Week of Year 31; 1-4. Aug Week of Year 32; 6-11. Aug Week of Year 33; 13-18. Aug Week of Year 34; 20-25. Aug Week of Year 35; 27-31. Aug I know that i can get the week of Year in joda time like this: new LocalDate().weekOfWeekYear() But i don´t know how to get the

问题 In application context I have registered an ObjectMapper module: @Bean public SimpleModule jsr310Module() { final SimpleModule module = new SimpleModule(); module.addSerializer(new LocalDateSerializer()); module.addDeserializer(LocalDate.class, new LocalDateDeserializer()); return module; } I tried to debug and it is loaded (or at least the method public void setupModule(SetupContext context) is execute on boot) but when I call a rest API that return an object with a LocalDate my deserializer

问题 i want to replace JodaTime by Java 8 DateTime API . I've got ISO-8601 period described = P2W5DT11H8M In JodaTime i parse it very simply by executing the following code: Period.parse("P2W5DT11H8M") and i get the successful Period object. Can i do the same in Java 8? 回答1: A Period in Java 8 only has year/month/day components. A Duration has hour/minute/second components. It seems that you will need to parse the string manually. One option could look like the code below (you need to add input

问题 I try to use joda-time library for easier measuring the execution time of my program (not for profiling, just for the user). But when I compile my project I get error about missing dependency -- the "FromString" class is missing. I tried to explicitly import it, but while typing intellisense (IntelliJ) does not even detect it, on the other hand there is only one jar for download from joda-time site. How do I resolve this dependency? I am aware of wrapper for JT but for now I would like to use

问题 using android and joda time lib - the I am trying to convert the user's timezone in order to format it later to : 2012-11-12T21:45:00+02:00 for example. DateTimeZone zone = DateTimeZone.forID( TimeZone.getDefault().getID()); the above code fails - anyone know how can I take "Europe/London" (Timezone.getID) and convert it to an offset so I can put it in ISO 8601 format? 回答1: If I have correctly understood your objective you can use directly the SimpleDateFormat class. Example code: