spring-boot项目中junit测试后的BeanCreationNotAllowedException答案

【问题标题】：BeanCreationNotAllowedException after junit test in spring-boot projectspring-boot项目中junit测试后的BeanCreationNotAllowedException
【发布时间】：2018-04-06 08:07:28
【问题描述】：

我有一个 Spring Boot 项目。
可以成功启动。
我添加了一个这样的测试：

@WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = SopStart.class, webEnvironment = SpringBootTest.WebEnvironment.MOCK)
public class Test{
    @Test
    public void test(){
        System.out.println("success!");
    }
}

“成功！”可以打印成功。但最后我得到了一个例外：

2017-10-25 17:00:42.481  INFO [bootstrap,,,] 7280 --- [      Thread-15] s.c.a.AnnotationConfigApplicationContext : Closing org.springframework.context.annotation.AnnotationConfigApplicationContext@758d0555: startup date [Wed Oct 25 17:00:09 CST 2017]; parent: org.springframework.web.context.support.GenericWebApplicationContext@75d4a80f
2017-10-25 17:00:42.492  WARN [bootstrap,,,] 7280 --- [      Thread-15] s.c.a.AnnotationConfigApplicationContext : Exception thrown from ApplicationListener handling ContextClosedEvent

org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'eurekaAutoServiceRegistration': Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:216)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    ...

【问题讨论】：

标签： java spring-boot junit spring-cloud

【解决方案1】：

它使用默认的Application 类。尝试为排除某些自动配置的bean（包括EurekaClientAutoConfiguration）的测试类定义您赢得的配置，这是您的测试抱怨的主要原因。

您可能也不需要@WebAppConfiguration。您甚至可能会收到java.lang.IllegalStateException。

这是一个例子，

@ActiveProfiles("test")
//@WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = TestExample.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@ContextConfiguration(classes = {Test.CustomConfiguration.class})
public class Test {

    @Configuration
    @EnableConfigurationProperties
    @EnableAutoConfiguration(exclude = {HibernateJpaAutoConfiguration.class,
            JpaRepositoriesAutoConfiguration.class,
            DataSourceAutoConfiguration.class,  
            EurekaClientAutoConfiguration.class})
    static class CustomConfiguration {

    }

    @Test
    public void test() {
        System.out.println("success!");
    }
}

【讨论】：