问题：
JUnit的例外
邵刚洁
我知道这个问题已经被问过很多次了，但是我已经坚持了几天，不知道为什么会这样。
这是我的JUnit测试套件，当我尝试@Autowire RequestService时会出现问题：
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:**/*.xml"})
public class RequestServiceTest {
@Autowired
private RequestService requestService;
@Test
public void add() throws Exception {
requestService.add(new Request(1, "hello"));
requestService.add(new Request(2, "hi"));
Request requestResponseFromDatabase = (Request) requestService.findById(1);
assertEquals("hello", requestResponseFromDatabase.getRestRequestParameters());
}
}
下面是我的模型、DAO和服务类的代码。
模型（为了简洁起见，省略构造函数和其他字段）
@Entity
public class Request implements Serializable {
@Id
private Integer restRequestId;
private Timestamp restRequestTimestamp;
private String restRequestParameters;
}
道
@Component
public class RequestDAO {
@Autowired
private RequestService requestService;
@PersistenceContext
private EntityManager entityManager;
public void persist(Request request) {
entityManager.persist(request);
}
public void update(Request request) {
entityManager.getTransaction().begin();
entityManager.merge(request);
entityManager.getTransaction().commit();
}
public Object findById(Serializable id) {
Request request = entityManager.find(Request.class, id);
if (request == null) {
throw new EntityNotFoundException("Cannot find Request for ID " + id);
}
return request;
}
public void delete(Request request) {
entityManager.getTransaction().begin();
entityManager.remove(request);
entityManager.getTransaction().commit();
}
public void deleteById(Serializable id) {
Request request = entityManager.find(Request.class, id);
if (request == null) {
throw new EntityNotFoundException("Cannot find Request for ID " + id);
} else if (request != null) {
entityManager.getTransaction().begin();
entityManager.remove(request);
entityManager.getTransaction().commit();
}
}
public List<Request> findAll() {
Query query = entityManager.createQuery("SELECT e from Request e");
List<Request> requests = query.getResultList();
return requests;
}
public void deleteAll() {
List<Request> requests = findAll();
for (Request request : requests) {
delete(request);
}
}
}
服务
@Component
public class RequestService {
@Autowired
private RequestDAO requestDAO;
@Transactional
public void add(Request request) {
requestDAO.persist(request);
}
@Transactional
public void update(Request request) {
requestDAO.update(request);
}
@Transactional
public Object findById(Serializable id) {
return requestDAO.findById(id);
}
@Transactional
public void delete(Request request) {
requestDAO.delete(request);
}
@Transactional
public void deleteById(Request request) {
requestDAO.delete(request);
}
@Transactional
public void deleteAll() {
requestDAO.deleteAll();
}
@Transactional
public void addAll(Collection<Request> requestCollection) {
for (Request request : requestCollection) {
requestDAO.persist(request);
}
}
@Transactional(readOnly = true)
public List<Request> findAll() {
return requestDAO.findAll();
}
}
spring.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
">
<!-- Scans the classpath for annotated components that will be auto-registered as Spring beans -->
<context:component-scan base-package="com.company.mypackage"/>
<!-- Activates scanning of @Autowired -->
<context:annotation-config/>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>
<property name="url" value="jdbc:hsqldb:mem://requestDb"/>
<property name="username" value="user"/>
<property name="password" value="pass"/>
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:packagesToScan="com.company.mypackage"
p:dataSource-ref="dataSource">
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="generateDdl" value="true"/>
<property name="showSql" value="true"/>
</bean>
</property>
</bean>
<bean id="transactionManger" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManger"/>
</beans>
完整堆栈跟踪：
May 23, 2016 1:57:38 PM org.springframework.test.context.support.DefaultTestContextBootstrapper getDefaultTestExecutionListenerClassNames
INFO: Loaded default TestExecutionListener class names from location [META-INF/spring.factories]: [org.springframework.test.context.web.ServletTestExecutionListener, org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener, org.springframework.test.context.support.DependencyInjectionTestExecutionListener, org.springframework.test.context.support.DirtiesContextTestExecutionListener, org.springframework.test.context.transaction.TransactionalTestExecutionListener, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener]
May 23, 2016 1:57:38 PM org.springframework.test.context.support.DefaultTestContextBootstrapper instantiateListeners
INFO: Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
May 23, 2016 1:57:38 PM org.springframework.test.context.support.DefaultTestContextBootstrapper getTestExecutionListeners
INFO: Using TestExecutionListeners: [org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@3498ed, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@1a407d53, org.springframework.test.context.support.DirtiesContextTestExecutionListener@3d8c7aca, org.springframework.test.context.transaction.TransactionalTestExecutionListener@5ebec15, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@21bcffb5]
May 23, 2016 1:57:38 PM org.springframework.context.support.GenericApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.GenericApplicationContext@548b7f67: startup date [Mon May 23 13:57:38 EDT 2016]; root of context hierarchy
May 23, 2016 1:57:38 PM org.springframework.test.context.TestContextManager prepareTestInstance
SEVERE: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@1a407d53] to prepare test instance [com.company.mypackage.request.service.RequestServiceTest@57175e74]
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.company.mypackage.request.service.RequestServiceTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.company.mypackage.request.service.RequestService com.company.mypackage.request.service.RequestServiceTest.requestService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:385)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
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$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.company.mypackage.request.service.RequestService com.company.mypackage.request.service.RequestServiceTest.requestService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 30 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
... 32 more
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.company.mypackage.request.service.RequestServiceTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.company.mypackage.request.service.RequestService com.company.mypackage.request.service.RequestServiceTest.requestService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:385)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:118)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
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$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:119)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:42)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.company.mypackage.request.service.RequestService com.company.mypackage.request.service.RequestServiceTest.requestService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
... 30 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.company.mypackage.request.service.RequestService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1373)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1119)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545)
... 32 more
Process finished with exit code -1
其他细节
- Spring版：4.2.5。发布
- Hibernate版本：5.1.0。最终
- 我的spring.xml位于src/main/Resources（是的，我知道这不是最佳实践，但想确保我的测试首先工作。我确实试图把它保存在我的src/test/Resources文件夹中，但一直遇到我的Application ationContext无法加载的问题）
资源如下：
- @使用JUnit测试自动生成
- @AUTOWIRED： BeanCreationExc0019
- @自动生成JUnit失败
有没有办法解决这个问题？我在过去也问过类似的问题，并表示歉意——很难理解Spring及其所有文档。我想确保我完全理解这一点，以避免将来犯同样的错误。
编辑：这是我的文件夹结构：
使用@ContextConfiguration时的堆栈跟踪（位置={"classpath：spring.xml"}）：
May 23, 2016 3:20:39 PM org.springframework.test.context.support.DefaultTestContextBootstrapper instantiateListeners
INFO: Could not instantiate TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener]. Specify custom listener classes or make the default listener classes (and their required dependencies) available. Offending class: [javax/servlet/ServletContext]
May 23, 2016 3:20:39 PM org.springframework.test.context.support.DefaultTestContextBootstrapper getTestExecutionListeners
INFO: Using TestExecutionListeners: [org.springframework.test.context.support.DirtiesContextBeforeModesTestExecutionListener@60f82f98, org.springframework.test.context.support.DependencyInjectionTestExecutionListener@35f983a6, org.springframework.test.context.support.DirtiesContextTestExecutionListener@7f690630, org.springframework.test.context.transaction.TransactionalTestExecutionListener@edf4efb, org.springframework.test.context.jdbc.SqlScriptsTestExecutionListener@2f7a2457]
May 23, 2016 3:20:39 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [spring.xml]
May 23, 2016 3:20:39 PM org.springframework.context.support.GenericApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.GenericApplicationContext@174d20a: startup date [Mon May 23 15:20:39 EDT 2016]; root of context hierarchy
May 23, 2016 3:20:39 PM org.springframework.jdbc.datasource.DriverManagerDataSource setDriverClassName
INFO: Loaded JDBC driver: org.hsqldb.jdbcDriver
May 23, 2016 3:20:39 PM org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean createNativeEntityManagerFactory
INFO: Building JPA container EntityManagerFactory for persistence unit 'default'
May 23, 2016 3:20:39 PM org.hibernate.jpa.internal.util.LogHelper logPersistenceUnitInformation
INFO: HHH000204: Processing PersistenceUnitInfo [
name: default
...]
May 23, 2016 3:20:39 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.1.0.Final}
May 23, 2016 3:20:39 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
May 23, 2016 3:20:39 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: HHH000021: Bytecode provider name : javassist
May 23, 2016 3:20:39 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
May 23, 2016 3:20:40 PM org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator initiateService
WARN: HHH000342: Could not obtain connection to query metadata : User not found: USER
May 23, 2016 3:20:40 PM org.springframework.context.support.GenericApplicationContext refresh
WARNING: Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring.xml]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
May 23, 2016 3:20:40 PM org.springframework.test.context.TestContextManager prepareTestInstance
SEVERE: Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@35f983a6] to prepare test instance [com.company.mypackage.request.service.RequestServiceTest@481ba2cf]
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:83)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:228)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:230)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:289)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:291)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:249)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:89)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring.xml]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
java.lang.IllegalStateException: Failed to load ApplicationContext
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [spring.xml]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
Process finished with exit code -1
共有2个答案
扶文光
这里发生的问题是它无法加载您的springbean xml文件。能否将spring xml文件直接放在classpath的根级别。
赵飞雨
错误消息非常清楚，您需要正确配置hibernate。
org.hibernate.HibernateException:未设置“hibernate.dialogue”时，对方言解析信息的访问不能为空
可能的原因可能是：
- 您的Hibernate设置不正确。
- 或者在测试期间没有DB运行
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问题内容： 是否使用对象的新（或不同）实例来运行JUnit测试用例中的每个测试方法？还是一个实例可用于所有测试？ 运行此测试时，将创建多少个类实例？ 如果可能的话，提供一个指向文档或源代码的链接，我可以在其中验证行为。 问题答案： 我在JUnit文档中找不到关于您问题的明确答案，但正如anjanb所写，其目的是每个测试都独立于其他测试，因此可以为要运行的每个测试创建一个新的TestCase实例。
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我有一个简单的测试用例： FileManager中的函数删除 /myDir下的所有文件，然后再次保留文件。 如上所述，我有一个。运行时，我可以按以下顺序查看所有打印： 但是，测试在失败。有两件事我不明白： > 我不明白，它在中失败了，为什么我仍然可以看到打印的，听起来就像是失败了，它没有停止运行，而是继续运行下一个测试？JUnit测试用例中的场景背后发生了什么？？ 我不明白的另一件事是为什么tes
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我是新的火花与Java编程。我有一个从Oracle数据库读取数据的方法。现在我需要帮助编写测试用例使用JUnit框架为下面的代码。 数据集df=spark。read（）。格式（“jdbc”）。jdbc（jdbcUrl、dbTable1、connectionProperties）；
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junit5-samples 仓库托管了很多基于JUnit Jupiter和JUnit Vintage的示例项目。可以在下面的项目中找到各自的build.gradle和pom.xml. 对于Gradle, check out junit5-gradle-consumer 项目. 对于Maven, check out junit5-maven-consumer 项目.