Question

在Grails 3.3.6插件中，我们添加了从RestfulController派生的CrudController。这样的结果是，使用包含CrudController的插件在其他插件中进行集成测试将不再起作用。抛出以下示例：

Error creating bean with name 'com.ic.crud.CrudController': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.ic.crud.CrudController]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.ic.crud.CrudController.<init>()
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.ic.crud.CrudController': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.ic.crud.CrudController]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.ic.crud.CrudController.<init>()
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1163)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1107)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:312)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:308)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1080)
    at org.spockframework.spring.SpringMockTestExecutionListener.beforeTestMethod(SpringMockTestExecutionListener.java:54)
    at org.spockframework.spring.AbstractSpringTestExecutionListener.beforeTestMethod(AbstractSpringTestExecutionListener.java:23)
    at org.springframework.test.context.TestContextManager.beforeTestMethod(TestContextManager.java:269)
    at org.spockframework.spring.SpringTestContextManager.beforeTestMethod(SpringTestContextManager.java:54)
    at org.spockframework.spring.SpringInterceptor.interceptSetupMethod(SpringInterceptor.java:45)
    at org.spockframework.runtime.extension.AbstractMethodInterceptor.intercept(AbstractMethodInterceptor.java:28)
    at org.spockframework.runtime.extension.MethodInvocation.proceed(MethodInvocation.java:87)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:114)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:57)
    at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:66)
    at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
    at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
    at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:109)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
    at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:147)
    at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:129)
    at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:404)
    at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:63)
    at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:46)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.ic.crud.CrudController]: No default constructor found; nested exception is java.lang.NoSuchMethodException: com.ic.crud.CrudController.<init>()
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:85)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1155)
    ... 34 more
Caused by: java.lang.NoSuchMethodException: com.ic.crud.CrudController.<init>()
    at java.lang.Class.getConstructor0(Class.java:3082)
    at java.lang.Class.getDeclaredConstructor(Class.java:2178)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:80)
    ... 35 more

此异常嵌套了多次。如果任何域类都用@Resource（superClass = CrudController）注释，或者存在其他扩展CrudController的控制器类，则会发生此异常。

由于在RestfulController中不存在默认值，因此无法在CrudController中添加默认值。

Answer 1

事实证明Extending RestfulController for a base SubClassRestfulController is not working on grails 3.0.4的解决方案正在工作。这意味着CrudController需要是抽象的，并移至src / main / groovy。仅移动不起作用，因为控制器是插件的一部分。

由于缺少默认c'tor

1 个答案: