org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.test.test-gateway: Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchGateway': Post-processing of the FactoryBean's object failed; nested exception is java.lang.IllegalArgumentException: Class must not be null

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If you're unit testing, you should instantiate only the service and mock the dependencies. If you're testing integration, you should add all the mocking to the configurations file.

Solutions on the web

via Spring JIRA by Russ Miles, 1 year ago
Error creating bean with name 'com.test.test-gateway: Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchGateway': Post-processing of the FactoryBean's object failed; nested exception is java.lang.IllegalArgumentException: Class must not be null
via Spring JIRA by Russ Miles, 1 year ago
Error creating bean with name 'com.test.test-gateway: Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchGateway': Post-processing of the FactoryBean's object failed; nested exception is java.lang.IllegalArgumentException: Class must not be null
via spring.io by Unknown author, 1 year ago
Error creating bean with name 'com.test.test-gateway: Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchGateway': Post-processing of the FactoryBean's object failed; nested exception is java.lang.IllegalArgumentException: Class must not be null
via Stack Overflow by Steve
, 2 years ago
Error creating bean with name 'mil.navy.ndms.conops.common.dao.impl.MenuItem_Junit4_JPATest': Injection of resource fields failed; nested exception is java.lang.IllegalStateException: Specified field type [interface javax.persistence.EntityManagerFactory] is incompatible with resource type [javax.persistence.EntityManager]
via sourceforge.net by Unknown author, 1 year ago
Error creating bean with name 'com.wfm.p3.model.dao.ProduceItemDaoTest': Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'tempDao' must be of type [com.wfm.p3.model.dao.TempDao], but was actually of type [$Proxy30]
via csdn.net by Unknown author, 2 years ago
Error creating bean with name 'factwishPage': Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'factwishWindow': Invocation of init method failed; nested
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.test.test-gateway: Injection of resource fields failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'searchGateway': Post-processing of the FactoryBean's object failed; nested exception is java.lang.IllegalArgumentException: Class must not be null
at org.springframework.util.Assert.notNull(Assert.java:112)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:357)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.postProcessObjectFromFactoryBean(AbstractAutowireCapableBeanFactory.java:1393)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:114)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:90)
at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1272)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:216)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:184)
at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:422)
at org.springframework.beans.factory.annotation.InjectionMetadata$InjectedElement.inject(InjectionMetadata.java:182)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:927)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:110)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:255)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:93)
at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)

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