idea : Cannot find implementation for org.mapstruct.example.kotlin.converter.PersonConverter

[StayHungryStayFoolish]

i use this example, but the idea runtime error :

class PersonConverterTest {

@Test
fun testConvertToDto() {
    val converter = Mappers.getMapper(PersonConverter::class.java)

    val person = Person("Samuel", "Jackson", "0123 334466", LocalDate.of(1948, 12, 21))

    val personDto = converter.convertToDto(person)
    assertThat(personDto).isNotNull()
    assertThat(personDto.firstName).isEqualTo("Samuel")
    assertThat(personDto.lastName).isEqualTo("Jackson")
    assertThat(personDto.phone).isEqualTo("0123 334466")
    assertThat(personDto.birthdate).isEqualTo(LocalDate.of(1948, 12, 21))
}

@Test
fun testConvertToModel() {
    val converter = Mappers.getMapper(PersonConverter::class.java)

    val personDto = PersonDto("Samuel", "Jackson", "0123 334466", LocalDate.of(1948, 12, 21))

    val person = converter.convertToModel(personDto)
    assertThat(person).isNotNull()
    assertThat(person.firstName).isEqualTo("Samuel")
    assertThat(person.lastName).isEqualTo("Jackson")
    assertThat(person.phoneNumber).isEqualTo("0123 334466")
    assertThat(person.birthdate).isEqualTo(LocalDate.of(1948, 12, 21))
}

}

java.lang.RuntimeException: java.lang.ClassNotFoundException: Cannot find implementation for org.mapstruct.example.kotlin.converter.PersonConverter

at org.mapstruct.factory.Mappers.getMapper(Mappers.java:61)
at org.mapstruct.example.kotlin.converter.PersonConverterTest.testConvertToDto(PersonConverterTest.kt:14)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Caused by: java.lang.ClassNotFoundException: Cannot find implementation for org.mapstruct.example.kotlin.converter.PersonConverter at org.mapstruct.factory.Mappers.getMapper(Mappers.java:75) at org.mapstruct.factory.Mappers.getMapper(Mappers.java:58) ... 23 more

[StayHungryStayFoolish]

sorry ,i use mvn compile.it`s ok.

[filiphr]

Where did you have that exception @StayHungryStayFoolish?

Seems like this is resolved now, closing the issue.

[alishiravand]

Hi, I had this problem but i couldn't resolve it, what you think about it?

java.lang.RuntimeException: java.lang.ClassNotFoundException: Cannot find implementation for org.mapstruct.example.kotlin.converter.PersonConverter

at org.mapstruct.factory.Mappers.getMapper(Mappers.java:61)
at org.mapstruct.example.kotlin.converter.PersonConverterTest.testConvertToModel(PersonConverterTest.kt:28)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.BlockJUnit4ClassRunner$1.evaluate(BlockJUnit4ClassRunner.java:100)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:103)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)

Caused by: java.lang.ClassNotFoundException: Cannot find implementation for org.mapstruct.example.kotlin.converter.PersonConverter at org.mapstruct.factory.Mappers.getMapper(Mappers.java:75) at org.mapstruct.factory.Mappers.getMapper(Mappers.java:58) ... 26 more