Spring 5 和 Kotlin 1.1 协程：类型 rx.Scheduler 不存在
Spring 5 and Kotlin 1.1 Coroutines: Type rx.Scheduler not present
我正在使用 Kotlin 1.1.4-3 和 Spring-context 5.0.0.RELEASE。
启动项目时出现此错误：
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'coroutineAnnotationBeanPostProcessor' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/ProxyCoroutineConfiguration.class]: Unsatisfied dependency expressed through method 'coroutineAnnotationBeanPostProcessor' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalCoroutineContextResolver' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/CoroutineContextResolverConfiguration.class]: Unexpected exception during bean creation; nested exception is java.lang.reflect.InvocationTargetException
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:458)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1249)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1098)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=12=](AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalCoroutineContextResolver' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/CoroutineContextResolverConfiguration.class]: Unexpected exception during bean creation; nested exception is java.lang.reflect.InvocationTargetException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:518)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=12=](AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1133)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1060)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:809)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:715)
Caused by: java.lang.reflect.InvocationTargetException: null
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 kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotationArguments(ReflectKotlinClass.kt:173)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotation(ReflectKotlinClass.kt:162)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.loadMethodAnnotations(ReflectKotlinClass.kt:97)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.visitMembers(ReflectKotlinClass.kt:87)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectKotlinClass.visitMembers(ReflectKotlinClass.kt:68)
at kotlin.reflect.jvm.internal.impl.load.kotlin.AbstractBinaryClassAnnotationAndConstantLoader.loadAnnotationsAndInitializers(AbstractBinaryClassAnnotationAndConstantLoader.kt:257)
Caused by: java.lang.TypeNotPresentException: Type rx.Scheduler not present
at sun.reflect.annotation.TypeNotPresentExceptionProxy.generateException(TypeNotPresentExceptionProxy.java:46)
at sun.reflect.annotation.AnnotationInvocationHandler.invoke(AnnotationInvocationHandler.java:84)
at com.sun.proxy.$Proxy166.value(Unknown Source)
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 kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotationArguments(ReflectKotlinClass.kt:173)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotation(ReflectKotlinClass.kt:162)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.loadMethodAnnotations(ReflectKotlinClass.kt:97)
Caused by: java.lang.ClassNotFoundException: rx.Scheduler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
at sun.reflect.annotation.AnnotationParser.parseSig(AnnotationParser.java:439)
at sun.reflect.annotation.AnnotationParser.parseClassValue(AnnotationParser.java:420)
似乎 spring 正在寻找 rx.Scheduler class 但它不在 class 路径中。很明显没有添加rx.Scheduler对应的依赖。但我在互联网上找不到任何相关内容。
我将 RxJava2 (io.reactivex.rxjava2) 添加到项目中，但没有成功。
我能做什么？
最终答案 - 基于 Rafal G. 回复：
此错误是因为使用了 konrad-kaminski/spring-kotlin-coroutine 库。
但是，我在我的项目中使用了这些依赖项：
"org.springframework.kotlin" % "spring-kotlin-coroutine" % "0.2.2" exclude("org.jetbrains.kotlinx", "kotlinx-coroutines"),
"org.springframework" % "spring-context" % "5.0.0.RELEASE",
"org.springframework.data" % "spring-data-jpa" % "2.0.0.RELEASE",
// https://mvnrepository.com/artifact/io.reactivex.rxjava2/rxjava
"io.reactivex.rxjava2" % "rxjava" % "2.1.4",
// https://mvnrepository.com/artifact/io.reactivex/rxjava
"io.reactivex" % "rxjava" % "1.3.2",
// https://mvnrepository.com/artifact/io.projectreactor/reactor-core
"io.projectreactor" % "reactor-core" % "3.1.0.RELEASE"
您需要使用 RxJava 1，因为它是 class rx.Schedulers 定义的地方。
我正在使用 Kotlin 1.1.4-3 和 Spring-context 5.0.0.RELEASE。
启动项目时出现此错误：
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'coroutineAnnotationBeanPostProcessor' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/ProxyCoroutineConfiguration.class]: Unsatisfied dependency expressed through method 'coroutineAnnotationBeanPostProcessor' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalCoroutineContextResolver' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/CoroutineContextResolverConfiguration.class]: Unexpected exception during bean creation; nested exception is java.lang.reflect.InvocationTargetException
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723)
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:458)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1249)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1098)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=12=](AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'globalCoroutineContextResolver' defined in class path resource [org/springframework/kotlin/experimental/coroutine/context/CoroutineContextResolverConfiguration.class]: Unexpected exception during bean creation; nested exception is java.lang.reflect.InvocationTargetException
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:518)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean[=12=](AbstractBeanFactory.java:312)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1133)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1060)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:809)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:715)
Caused by: java.lang.reflect.InvocationTargetException: null
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 kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotationArguments(ReflectKotlinClass.kt:173)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotation(ReflectKotlinClass.kt:162)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.loadMethodAnnotations(ReflectKotlinClass.kt:97)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.visitMembers(ReflectKotlinClass.kt:87)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectKotlinClass.visitMembers(ReflectKotlinClass.kt:68)
at kotlin.reflect.jvm.internal.impl.load.kotlin.AbstractBinaryClassAnnotationAndConstantLoader.loadAnnotationsAndInitializers(AbstractBinaryClassAnnotationAndConstantLoader.kt:257)
Caused by: java.lang.TypeNotPresentException: Type rx.Scheduler not present
at sun.reflect.annotation.TypeNotPresentExceptionProxy.generateException(TypeNotPresentExceptionProxy.java:46)
at sun.reflect.annotation.AnnotationInvocationHandler.invoke(AnnotationInvocationHandler.java:84)
at com.sun.proxy.$Proxy166.value(Unknown Source)
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 kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotationArguments(ReflectKotlinClass.kt:173)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.processAnnotation(ReflectKotlinClass.kt:162)
at kotlin.reflect.jvm.internal.impl.load.kotlin.reflect.ReflectClassStructure.loadMethodAnnotations(ReflectKotlinClass.kt:97)
Caused by: java.lang.ClassNotFoundException: rx.Scheduler
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
at sun.reflect.annotation.AnnotationParser.parseSig(AnnotationParser.java:439)
at sun.reflect.annotation.AnnotationParser.parseClassValue(AnnotationParser.java:420)
似乎 spring 正在寻找 rx.Scheduler class 但它不在 class 路径中。很明显没有添加rx.Scheduler对应的依赖。但我在互联网上找不到任何相关内容。
我将 RxJava2 (io.reactivex.rxjava2) 添加到项目中，但没有成功。
我能做什么？
最终答案 - 基于 Rafal G. 回复：
此错误是因为使用了 konrad-kaminski/spring-kotlin-coroutine 库。 但是，我在我的项目中使用了这些依赖项：
"org.springframework.kotlin" % "spring-kotlin-coroutine" % "0.2.2" exclude("org.jetbrains.kotlinx", "kotlinx-coroutines"),
"org.springframework" % "spring-context" % "5.0.0.RELEASE",
"org.springframework.data" % "spring-data-jpa" % "2.0.0.RELEASE",
// https://mvnrepository.com/artifact/io.reactivex.rxjava2/rxjava
"io.reactivex.rxjava2" % "rxjava" % "2.1.4",
// https://mvnrepository.com/artifact/io.reactivex/rxjava
"io.reactivex" % "rxjava" % "1.3.2",
// https://mvnrepository.com/artifact/io.projectreactor/reactor-core
"io.projectreactor" % "reactor-core" % "3.1.0.RELEASE"
您需要使用 RxJava 1，因为它是 class rx.Schedulers 定义的地方。