问题描述
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'cn.com.qzinfo.test.example.ExampleDaoTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.com.qzinfo.example.dao.ExampleDao cn.com.qzinfo.test.example.ExampleDaoTest.exampleDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [cn.com.qzinfo.example.dao.ExampleDao] 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:286)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1064)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireBeanProperties(AbstractAutowireCapableBeanFactory.java:374)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:333)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:220)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:301)at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:303)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:240)at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)at org.junit.runners.ParentRunner.run(ParentRunner.java:220)at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:180)at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:46)at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private cn.com.qzinfo.example.dao.ExampleDao cn.com.qzinfo.test.example.ExampleDaoTest.exampleDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [cn.com.qzinfo.example.dao.ExampleDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:507)at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:84)at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:283)... 26 moreCaused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [cn.com.qzinfo.example.dao.ExampleDao] 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:903)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:772)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:686)at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:478)... 28 morespring配置文件：<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd"default-autowire="byName"><!--强制使用CGLIB--><aop:aspectj-autoproxy proxy-target-class="true" /><!-- 数据源mysql --><bean id="mysql-DataSource" class="org.apache.commons.dbcp.BasicDataSource"destroy-method="close"><property name="driverClassName" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql:///springmvc" /><property name="username" value="root" /><property name="password" value="123456" /></bean> <!-- spring ibatis SqlMapClient --><bean id="sqlMapClient" class="org.springframework.orm.ibatis.SqlMapClientFactoryBean"><property name="configLocation" value="classpath:sqlmap-config.xml" /><property name="dataSource" ref="mysql-DataSource" /></bean><!--事务管理DataSourceTranSactionManager--><bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="mysql-DataSource" /></bean><!--启动spring注解功能--><tx:annotation-driven transaction-manager="transactionManager" /><aop:aspectj-autoproxy /></beans>测试类文件：package cn.com.qzinfo.test.example;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.test.context.ContextConfiguration;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import cn.com.qzinfo.example.dao.ExampleDao;import cn.com.qzinfo.example.model.Example;@RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath:applicationContext.xml"}) public class ExampleDaoTest{@Autowiredprivate ExampleDao exampleDao;@Testpublic void test() {Example example =new Example();example.setOperatorId(111);example.setIntRev1(111);exampleDao.insert(example);}}
解决方案
缺少 context:component-scan 扫描你的组件