ClassCastException: org.springframework.beans.factory.support.NullBean 无法转换为 org.springframework.plugin.core.Plugin
ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
我的应用程序中有这个测试：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@MockBeans({ @MockBean(SwaggerConfig.class)})
public class AuthorisationControllerTest implements WebMvcConfigurer {
private MockMvc mockMvc;
@Autowired
private WebApplicationContext wac;
@Before
public void setup() {
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
}
@Test
public void testAuthorisation() throws Exception {
this.mockMvc.perform(get("/test")).andDo(print()).andExpect(status().isOk())
.andExpect(content().string(containsString("Hello, World")));
}
}
但是当我 运行 测试时我得到了这个错误：
15:04:10.417 [main] ERROR org.springframework.test.context.TestContextManager - Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@7219ec67] to prepare test instance [eu.europa.ec.oib.kw.guards.controller.AuthorisationControllerTest@6fb219dd]
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.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:246)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access0(ParentRunner.java:66)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:293)
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.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185)
at org.springframework.context.support.DefaultLifecycleProcessor.access0(DefaultLifecycleProcessor.java:53)
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
at org.springframework.test.context.web.AbstractGenericWebContextLoader.loadContext(AbstractGenericWebContextLoader.java:129)
at org.springframework.test.context.web.AbstractGenericWebContextLoader.loadContext(AbstractGenericWebContextLoader.java:61)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:275)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:243)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
... 28 common frames omitted
Caused by: java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
at org.springframework.plugin.core.PluginRegistrySupport.initialize(PluginRegistrySupport.java:78)
at org.springframework.plugin.core.OrderAwarePluginRegistry.initialize(OrderAwarePluginRegistry.java:132)
at org.springframework.plugin.core.PluginRegistrySupport.getPlugins(PluginRegistrySupport.java:59)
at org.springframework.plugin.core.SimplePluginRegistry.getPlugins(SimplePluginRegistry.java:68)
at springfox.documentation.spring.web.plugins.DocumentationPluginsManager.documentationPlugins(DocumentationPluginsManager.java:96)
at springfox.documentation.spring.web.plugins.DocumentationPluginsBootstrapper.start(DocumentationPluginsBootstrapper.java:162)
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
... 40 common frames omitted
15:04:10.436 [main] DEBUG org.springframework.test.context.support.AbstractDirtiesContextTestExecutionListener - After test class: context [DefaultTestContext@769e7ee8 testClass = AuthorisationControllerTest, testInstance = [null], testMethod = [null], testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@5276e6b0 testClass = AuthorisationControllerTest, locations = '{}', classes = '{class com.bonanza.ApplicationTestConfig}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{}', contextCustomizers = set[org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@491666ad, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@51931956, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@82791545, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@240237d2, org.springframework.test.context.web.socket.MockServerContainerContextCustomizer@212bf671], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.test.context.web.WebDelegatingSmartContextLoader', parent = [null]], attributes = map[[empty]]], class annotated with @DirtiesContext [false] with mode [null].
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 10.803 s <<< FAILURE! - in com.bonanza..controller.AuthorisationControllerTest
[ERROR] testAuthorisation(om.bonanza.controller.AuthorisationControllerTest) Time elapsed: 0.049 s <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
Caused by: java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
[INFO]
您的问题可能与以下行有关：
@MockBeans({ @MockBean(SwaggerConfig.class)})
我认为 Spring 试图模拟您的 Swagger 配置，并且在解析依赖项时，框架提供了一个 NullBean 引用而不是所需的对象，一个 org.springframework.plugin.core.Plugin 的实例在这种情况下。
我假设您需要在测试中禁用 Swagger 支持。
如果是这种情况，还有一种更简单的方法可以继续。
想法是组合 Spring 个配置文件。
首先，在您的 Swagger class 配置中定义一个 @Profile 注释，例如：
@Profile("swagger")
@Configuration
@EnableSwagger2
public class SwaggerConfig {
//...
}
此配置文件应包含在您的正常应用程序操作中。如果您需要这方面的更多信息，请告诉我。
然后，在您的测试中，select 您想要使用 @ActiveProfiles 注释启用的配置文件，例如：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@ActiveProfiles("test")
public class AuthorisationControllerTest implements WebMvcConfigurer {
您可以像示例中那样定义名称为 test 的单个配置文件，其中包含配置文件列表，或者直接包含适用的配置文件列表，但务必确保不包含与Swagger 配置，示例中的 swagger。
或者，如果它不干扰您的其他配置，您可以通过以下配置获得类似的结果：
@Profile("!no-swagger")
@Configuration
@EnableSwagger2
public class SwaggerConfig {
//...
}
你的测试：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@ActiveProfiles("no-swagger")
public class AuthorisationControllerTest implements WebMvcConfigurer {
我的应用程序中有这个测试：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@MockBeans({ @MockBean(SwaggerConfig.class)})
public class AuthorisationControllerTest implements WebMvcConfigurer {
private MockMvc mockMvc;
@Autowired
private WebApplicationContext wac;
@Before
public void setup() {
this.mockMvc = MockMvcBuilders.webAppContextSetup(this.wac).build();
}
@Test
public void testAuthorisation() throws Exception {
this.mockMvc.perform(get("/test")).andDo(print()).andExpect(status().isOk())
.andExpect(content().string(containsString("Hello, World")));
}
}
但是当我 运行 测试时我得到了这个错误：
15:04:10.417 [main] ERROR org.springframework.test.context.TestContextManager - Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@7219ec67] to prepare test instance [eu.europa.ec.oib.kw.guards.controller.AuthorisationControllerTest@6fb219dd]
java.lang.IllegalStateException: Failed to load ApplicationContext
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)
at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:123)
at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)
at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)
at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:244)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:227)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.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:246)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner.run(ParentRunner.java:331)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:79)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
at org.junit.runners.ParentRunner.access0(ParentRunner.java:66)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:293)
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.evaluate(ParentRunner.java:306)
at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:185)
at org.springframework.context.support.DefaultLifecycleProcessor.access0(DefaultLifecycleProcessor.java:53)
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360)
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158)
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122)
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554)
at org.springframework.test.context.web.AbstractGenericWebContextLoader.loadContext(AbstractGenericWebContextLoader.java:129)
at org.springframework.test.context.web.AbstractGenericWebContextLoader.loadContext(AbstractGenericWebContextLoader.java:61)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:275)
at org.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:243)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:99)
at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:124)
... 28 common frames omitted
Caused by: java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
at org.springframework.plugin.core.PluginRegistrySupport.initialize(PluginRegistrySupport.java:78)
at org.springframework.plugin.core.OrderAwarePluginRegistry.initialize(OrderAwarePluginRegistry.java:132)
at org.springframework.plugin.core.PluginRegistrySupport.getPlugins(PluginRegistrySupport.java:59)
at org.springframework.plugin.core.SimplePluginRegistry.getPlugins(SimplePluginRegistry.java:68)
at springfox.documentation.spring.web.plugins.DocumentationPluginsManager.documentationPlugins(DocumentationPluginsManager.java:96)
at springfox.documentation.spring.web.plugins.DocumentationPluginsBootstrapper.start(DocumentationPluginsBootstrapper.java:162)
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182)
... 40 common frames omitted
15:04:10.436 [main] DEBUG org.springframework.test.context.support.AbstractDirtiesContextTestExecutionListener - After test class: context [DefaultTestContext@769e7ee8 testClass = AuthorisationControllerTest, testInstance = [null], testMethod = [null], testException = [null], mergedContextConfiguration = [WebMergedContextConfiguration@5276e6b0 testClass = AuthorisationControllerTest, locations = '{}', classes = '{class com.bonanza.ApplicationTestConfig}', contextInitializerClasses = '[]', activeProfiles = '{}', propertySourceLocations = '{}', propertySourceProperties = '{}', contextCustomizers = set[org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizer@491666ad, org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory$DuplicateJsonObjectContextCustomizer@51931956, org.springframework.boot.test.mock.mockito.MockitoContextCustomizer@82791545, org.springframework.boot.test.autoconfigure.properties.PropertyMappingContextCustomizer@0, org.springframework.boot.test.autoconfigure.web.servlet.WebDriverContextCustomizerFactory$Customizer@240237d2, org.springframework.test.context.web.socket.MockServerContainerContextCustomizer@212bf671], resourceBasePath = 'src/main/webapp', contextLoader = 'org.springframework.test.context.web.WebDelegatingSmartContextLoader', parent = [null]], attributes = map[[empty]]], class annotated with @DirtiesContext [false] with mode [null].
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 10.803 s <<< FAILURE! - in com.bonanza..controller.AuthorisationControllerTest
[ERROR] testAuthorisation(om.bonanza.controller.AuthorisationControllerTest) Time elapsed: 0.049 s <<< ERROR!
java.lang.IllegalStateException: Failed to load ApplicationContext
Caused by: org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
Caused by: java.lang.ClassCastException: org.springframework.beans.factory.support.NullBean cannot be cast to org.springframework.plugin.core.Plugin
[INFO]
您的问题可能与以下行有关：
@MockBeans({ @MockBean(SwaggerConfig.class)})
我认为 Spring 试图模拟您的 Swagger 配置，并且在解析依赖项时，框架提供了一个 NullBean 引用而不是所需的对象，一个 org.springframework.plugin.core.Plugin 的实例在这种情况下。
我假设您需要在测试中禁用 Swagger 支持。
如果是这种情况，还有一种更简单的方法可以继续。
想法是组合 Spring 个配置文件。
首先，在您的 Swagger class 配置中定义一个 @Profile 注释，例如：
@Profile("swagger")
@Configuration
@EnableSwagger2
public class SwaggerConfig {
//...
}
此配置文件应包含在您的正常应用程序操作中。如果您需要这方面的更多信息，请告诉我。
然后，在您的测试中，select 您想要使用 @ActiveProfiles 注释启用的配置文件，例如：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@ActiveProfiles("test")
public class AuthorisationControllerTest implements WebMvcConfigurer {
您可以像示例中那样定义名称为 test 的单个配置文件，其中包含配置文件列表，或者直接包含适用的配置文件列表，但务必确保不包含与Swagger 配置，示例中的 swagger。
或者，如果它不干扰您的其他配置，您可以通过以下配置获得类似的结果：
@Profile("!no-swagger")
@Configuration
@EnableSwagger2
public class SwaggerConfig {
//...
}
你的测试：
@RunWith(SpringJUnit4ClassRunner.class)
@WebAppConfiguration
@ContextConfiguration(classes = ApplicationTestConfig.class)
@ActiveProfiles("no-swagger")
public class AuthorisationControllerTest implements WebMvcConfigurer {