Dozer Custom Converter--LocalDateTime to Date

Spring boot project, using Dozer to move the LocalDateTime attribute in JPA entity to an error in the corresponding LocalDateTime attribute in the DTO

Java.lang.nosuchmethodexception:java.time.localdatetime.<init> () at Java.lang.Class.getConstructor0 ( class.java:3082) ~[na:1.8.0_51]at java.lang.Class.getDeclaredConstructor (class.java:2178) ~[na:1.8.0_51]at Org.dozer.factory.constructionstrategies$byconstructor.newinstance (constructionstrategies.java:272) ~[ Dozer-5.5.1.jar:na]

Replace the LocalDateTime in the DTO with a date and an error

Java.lang.NumberFormatException:For input string: "2015-10-17t17:55:12.091"

Workaround:

Add a custom Convert

public class  localdatetimetodatedozerconverter extends dozerconverter<localdatetime, date> {   public localdatetimetodatedozerconverter ()  {    super ( Localdatetime.class, date.class);  }   @Override   public localdatetime  convertfrom (date source, localdatetime destination)  {     Localdatetime datetime = localdatetime.ofinstant (Source.toinstant (),  ZoneId.systemDefault ( ));    return datetime;  }   @Override   public date  convertto (localdatetime source, date destination)  {    date  converttodate = date.from (Source.atzone (Zoneid.systemdefault ()). Toinstant ());     return converttodate;  }} 

Add an XML configuration file under the Classpath

<?xml version= "1.0"  encoding= "UTF-8"? ><mappings xmlns= "Http://dozer.sourceforge.net"           xmlns:xsi= "http://www.w3.org/2001/ Xmlschema-instance "          xsi:schemalocation=" http// dozer.sourceforge.net          http://dozer.sourceforge.net/ Schema/beanmapping.xsd ">  <configuration>    <custom-converters>  <!-- these are always bi-directional -->       <converter type= "Com.demo.LocalDateTimeToDateDozerConverter"  >         <class-a>java.time.LocalDateTime</class-a>         <class-b>java.util.date</class-b>      </ Converter>    </custOm-converters>       </configuration>  </mappings> 

Note that a global configuration like this can only be configured in XML, see official documentation

In fact some parts of the configuration (e.g Global configuration block) is only possible to express in XML format.

Add the following configuration to the Spring boot startup class

@Bean public Mapper Dozerbeanmapper () {list<string> mappingfileurls = lists.newarraylist ("Dozer-custom-convert.    XML ");    Dozerbeanmapper mapper = Getsingletondozerbeanmapper ();    Mapper.setmappingfiles (Mappingfileurls);  return mapper; }

Reference documents

Http://dozer.sourceforge.net/documentation/customconverter.html

Http://stackoverflow.com/questions/29550417/why-dozerconverter-is-not-working

Dozer Custom Converter--LocalDateTime to Date