spring+springmvc整合mabytis时mapper注入失败问题解决方法

2023-09-25 11:37:08 63

好久不搭架构，今天使用spring+springmvc整合mabytis的时候，坑爹的两个问题发生了。

花了一晚上解决这两个问题。现在将错误经验总结分享下，避免以后遇到坑继续往里跳。

1.单元测试的时候,单元测试失败报错:AServletContextisrequiredtoconfiguredefaultservlethandling

十月28,20169:03:33下午org.springframework.context.support.GenericApplicationContextrefresh
警告:Exceptionencounteredduringcontextinitialization-cancellingrefreshattempt
org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'defaultServletHandlerMapping'definedinclasspathresource[org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.class]:Beaninstantiationviafactorymethodfailed;nestedexceptionisorg.springframework.beans.BeanInstantiationException:Failedtoinstantiate[org.springframework.web.servlet.HandlerMapping]:Factorymethod'defaultServletHandlerMapping'threwexception;nestedexceptionisjava.lang.IllegalArgumentException:AServletContextisrequiredtoconfiguredefaultservlethandling
atorg.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
atorg.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:125)
atorg.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.java:60)
atorg.springframework.test.context.support.AbstractDelegatingSmartContextLoader.delegateLoading(AbstractDelegatingSmartContextLoader.java:109)
atorg.springframework.test.context.support.AbstractDelegatingSmartContextLoader.loadContext(AbstractDelegatingSmartContextLoader.java:261)
atorg.springframework.test.context.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:68)
atorg.springframework.test.context.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:86)
atorg.springframework.test.context.DefaultTestContext.getApplicationContext(DefaultTestContext.java:72)
atorg.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:117)
atorg.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:83)
atorg.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:212)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:200)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:259)
atorg.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:261)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:219)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83)
atorg.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
atorg.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
atorg.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
atorg.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
atorg.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
atorg.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
atorg.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68)
atorg.junit.runners.ParentRunner.run(ParentRunner.java:363)
atorg.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163)
atorg.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
atorg.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
atorg.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Causedby:org.springframework.beans.BeanInstantiationException:Failedtoinstantiate[org.springframework.web.servlet.HandlerMapping]:Factorymethod'defaultServletHandlerMapping'threwexception;nestedexceptionisjava.lang.IllegalArgumentException:AServletContextisrequiredtoconfiguredefaultservlethandling
atorg.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189)
atorg.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
...42more

web.xml



ArchetypeCreatedWebApplication

index.jsp




contextConfigLocation
classpath:spring_ynyn_dependence.xml




characterEncoding
org.springframework.web.filter.CharacterEncodingFilter

forceEncoding
true


encoding
UTF-8



characterEncoding
/*




dispatcherServlet

org.springframework.web.servlet.DispatcherServlet


contextConfigLocation

classpath:spring-mvc.xml


1



dispatcherServlet
/



HiddenHttpMethodFilter
org.springframework.web.filter.HiddenHttpMethodFilter


HiddenHttpMethodFilter
dispatcherServlet

资源以及配置文件都放在src/main/respources目录下。

springMVC的配置文件spring-mvc.xml



















WriteMapNullValue
WriteNullStringAsEmpty

sprin框架的配置文件spring_ynyn_dependence.xml

数据源配置文件byron4j_ynyn_datasource.xml

mybatis配置文件byron4j_ynyn_mybatis-config.xml

单元测试基类BaseMockitoTestCase.java

src/test/Java目录下：

packageorg.byron4j.ynyn.base;

importorg.junit.After;
importorg.junit.Before;
importorg.junit.runner.RunWith;
importorg.mockito.MockitoAnnotations;
importorg.springframework.test.context.ContextConfiguration;
importorg.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
*Mock测试类基类--配置文件载入类
*
*@ClassName:BaseSpringTestCase
*
*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:spring_ynyn_dependence.xml"})
publicclassBaseMockitoTestCase{
@Before
publicvoidbeforeInvoke(){
System.out.println("调用前工作....");
MockitoAnnotations.initMocks(this);
}

@After
publicvoidafterInvoke(){
System.out.println("调用完成.");
}

}

单元测试类StudentTest.java出问题了

packageorg.byron4j.ynyn.dbtest;

importorg.junit.Test;
importorg.springframework.beans.factory.annotation.Autowired;

importorg.byron4j.ynyn.base.BaseMockitoTestCase;
importorg.byron4j.ynyn.mapper.TaskerMapper;
importorg.byron4j.ynyn.mode.Tasker;



publicclassStudentTestextendsBaseMockitoTestCase{

@Autowired
StudentMapperstudentMapper;


@Test
publicvoidselectTest4Success(){
Studentrecord=newStudent();
record.setId(1);
StudentresultStudent=studentMapper.selectByPrimaryKey(record);
System.out.println(resultStudent);;
}
}

执行单元测试的时候，报错了警告:Exceptionencounteredduringcontextinitialization-cancellingrefreshattempt
org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname‘defaultServletHandlerMapping'definedinclasspathresource[org/springframework/web/servlet/config/annotation/DelegatingWebMvcConfiguration.class]:Beaninstantiationviafactorymethodfailed;nestedexceptionisorg.springframework.beans.BeanInstantiationException:Failedtoinstantiate[org.springframework.web.servlet.HandlerMapping]:Factorymethod‘defaultServletHandlerMapping'threwexception;nestedexceptionisjava.lang.IllegalArgumentException:AServletContextisrequiredtoconfiguredefaultservlethandling

这时候去检查spring-core和springMVC的两个配置文件，异常提示信息大意是ServletContext需要配置默认servlet处理映射器。一脸懵逼。。。最后发现是两个配置文件的context和包扫描配置有问题，springServlet上下文应该在spring核心配置中(spring_ynyn_dependence.xml)处理，需要使用进行配置。调整后的配置是：

1.sprin框架的配置文件spring_ynyn_dependence.xml调整

将以下配置内容



替换为：

2.springMVC的配置文件spring-mvc.xml调整

再次执行单元测试，OK。

二.mapper注入失败使用@Autowired注解:nestedexceptionisorg.springframework.beans.factory.NoSuchBeanDefinitionException:Noqualifyingbeanoftype[org.byron4j.mcp.mapper.TaskerMapper]foundfordependency:expectedatleast1beanwhichqualifiesasautowirecandidateforthisdependency.Dependencyannotations:{@org.springframework.beans.factory.annotation.Autowired(required=true)}

警告:Exceptionencounteredduringcontextinitialization-cancellingrefreshattempt
org.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'taskListenerConfigController':Injectionofautowireddependenciesfailed;nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Couldnotautowirefield:org.byron4j.mcp.service.TaskListenerConfigServiceorg.byron4j.mcp.controller.TaskListenerConfigController.taskListenerConfigService;nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'taskListenerConfigServiceImpl':Injectionofautowireddependenciesfailed;nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Couldnotautowirefield:org.byron4j.mcp.mapper.TaskerMapperorg.byron4j.mcp.service.impl.TaskListenerConfigServiceImpl.taskerMapper;nestedexceptionisorg.springframework.beans.factory.NoSuchBeanDefinitionException:Noqualifyingbeanoftype[org.byron4j.mcp.mapper.TaskerMapper]foundfordependency:expectedatleast1beanwhichqualifiesasautowirecandidateforthisdependency.Dependencyannotations:{@org.springframework.beans.factory.annotation.Autowired(required=true)}
atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
atorg.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
atorg.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
atorg.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
atorg.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
atorg.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
atorg.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
atorg.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
atorg.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
atorg.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663)
atorg.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629)
atorg.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677)
atorg.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548)
atorg.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489)
atorg.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
atjavax.servlet.GenericServlet.init(GenericServlet.java:158)
atorg.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
atorg.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
atorg.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
atorg.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5231)
atorg.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5518)
atorg.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
atorg.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
atorg.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
atorg.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
atorg.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1081)
atorg.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1877)
atjava.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
atjava.util.concurrent.FutureTask.run(FutureTask.java:266)
atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
atjava.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
atjava.lang.Thread.run(Thread.java:745)
Causedby:org.springframework.beans.factory.BeanCreationException:Couldnotautowirefield:org.byron4j.mcp.service.TaskListenerConfigServiceorg.byron4j.mcp.controller.TaskListenerConfigController.taskListenerConfigService;nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Errorcreatingbeanwithname'taskListenerConfigServiceImpl':Injectionofautowireddependenciesfailed;nestedexceptionisorg.springframework.beans.factory.BeanCreationException:Couldnotautowirefield:org.byron4j.mcp.mapper.TaskerMapperorg.byron4j.mcp.service.impl.TaskListenerConfigServiceImpl.taskerMapper;nestedexceptionisorg.springframework.beans.factory.NoSuchBeanDefinitionException:Noqualifyingbeanoftype[org.byron4j.mcp.mapper.TaskerMapper]foundfordependency:expectedatleast1beanwhichqualifiesasautowirecandidateforthisdependency.Dependencyannotations:{@org.springframework.beans.factory.annotation.Autowired(required=true)}
atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
atorg.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
atorg.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
...33more

解决第一个问题，单元测试后，部署该项目启动时，疯狂报错nestedexceptionisorg.springframework.beans.factory.NoSuchBeanDefinitionException:Noqualifyingbeanoftype[org.byron4j.mcp.mapper.TaskerMapper]foundfordependency:expectedatleast1beanwhichqualifiesasautowirecandidateforthisdependency.Dependencyannotations:{@org.springframework.beans.factory.annotation.Autowired(required=true)}。多次检查，发现springMVC配置文件中也需要加载mybatis配置，前面我仅仅在spring上下文核心配置文件(spring_ynyn_dependence.xml)中做了配置。

在spring-mvc.xml文件最后引入加载mybatis配置：

重新部署应用启动服务无措，发起请求验证OK。

spring+springmvc整合mabytis时mapper注入失败问题解决方法

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