org.springframework.beans.factory.BeanCreationException：创建名为“employeeRepo”的bean时出错：
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【中文标题】org.springframework.beans.factory.BeanCreationException：创建名为“employeeRepo”的bean时出错：【英文标题】：org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'employeeRepo': 【发布时间】：2018-04-27 08:15:18 【问题描述】：我使用 Spring 和 spring 数据，但它给出了以下错误。
调用init方法失败；嵌套异常是 java.lang.NoClassDefFoundError: org/springframework/core/DecoratingProxy 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578) 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) 在 org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305) 在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301) 在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196) 在 org.spring 引起：java.lang.ClassNotFoundException: org.springframework.core.DecoratingProxy
Spring-Servlet.xml
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/"/>
<beans:property name="suffix" value=".jsp"/>
</beans:bean>
<beans:bean
id="employeeRepo" class="com.spring.crud.dao.EmployeeRepo" abstract="true"/>
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver"/>
<beans:property name="url"
value="jdbc:mysql://localhost:3306/crud?createDatabaseIfNotExist=true"/>
<beans:property name="username" value="gppuser"/>
<beans:property name="password" value="da123abc"/>
</beans:bean>
<beans:bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
</beans:bean>
<beans:bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<beans:property name="dataSource" ref="dataSource"/>
<beans:property name="jpaVendorAdapter" ref="hibernateJpaVendorAdapter"/>
<beans:property name="packagesToScan" value="com.spring.crud.entity"/>
<beans:property name="jpaProperties">
<beans:props>
<beans:prop key="hibernate.dialect">$hibernate.dialect</beans:prop>
<beans:prop key="hibernate.dialect">$hibernate.hbm2ddl.auto</beans:prop>
<beans:prop key="hibernate.dialect">$hibernate.ejb.naming_strategy</beans:prop>
<beans:prop key="hibernate.dialect">$hibernate.show_sql</beans:prop>
<beans:prop key="hibernate.dialect">$hibernate.format_sql</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<beans:bean id="hibernateJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
<beans:bean id="hibernate4AnnotatedSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource"/>
<beans:property name="annotatedClasses">
<beans:list>
<beans:value>com.spring.crud.entity.Employee</beans:value>
</beans:list>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
</beans:prop>
<beans:prop key="hibernate.show_sql">true</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<context:component-scan base-package="com.spring.crud.*"/>
<jpa:repositories base-package="com.spring.crud" />
<!--<tx:annotation-driven transaction-manager="transactionManager"/>-->
<!--<beans:bean id="transactionManager"-->
<!--class="org.springframework.orm.hibernate4.HibernateTransactionManager">-->
<!--<beans:property name="sessionFactory"-->
<!--ref="hibernate4AnnotatedSessionFactory"/>-->
<!--</beans:bean>-->
EmployeeService.java
@Service("employeeService")
public class EmployeeService
@Autowired
private EmployeeRepo employeeRepo;
@Transactional
public List<Employee> getAllEmployee()
return (List<Employee>) employeeRepo.findAll();
员工回购
@Repository
public interface EmployeeRepo extends CrudRepository<Employee,Long>
Pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.spring.crud</groupId>
<artifactId>springMvcAssignment</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>$spring.version</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>$spring.version</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.4.1</version>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>$hibernate.version</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>$hibernate.version</version>
</dependency>
<!-- Apache Commons DBCP -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- Spring ORM -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>$spring.version</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-jpa -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-releasetrain</artifactId>
<version>Kay-M4</version>
<scope>import</scope>
<type>pom</type>
</dependency>
<!-- AspectJ -->
<!--<dependency>-->
<!--<groupId>org.aspectj</groupId>-->
<!--<artifactId>aspectjrt</artifactId>-->
<!--<version>$org.aspectj-version</version>-->
<!--</dependency>-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>$jdk.version</source>
<target>$jdk.version</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<spring.version>4.2.1.RELEASE</spring.version>
<security.version>4.0.3.RELEASE</security.version>
<jdk.version>1.7</jdk.version>
<hibernate.version>4.3.5.Final</hibernate.version>
<org.aspectj-version>1.7.4</org.aspectj-version>
</properties>
</project>
mvn 依赖：树
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building springMvcAssignment 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ springMvcAssignment ---
[INFO] com.spring.crud:springMvcAssignment:war:0.0.1-SNAPSHOT
[INFO] +- junit:junit:jar:3.8.1:test
[INFO] +- javax.servlet:javax.servlet-api:jar:3.1.0:compile
[INFO] +- org.springframework:spring-core:jar:4.2.1.RELEASE:compile
[INFO] | \- commons-logging:commons-logging:jar:1.2:compile
[INFO] +- org.springframework:spring-webmvc:jar:4.2.1.RELEASE:compile
[INFO] | +- org.springframework:spring-beans:jar:4.2.1.RELEASE:compile
[INFO] | +- org.springframework:spring-context:jar:4.2.1.RELEASE:compile
[INFO] | | \- org.springframework:spring-aop:jar:4.3.7.RELEASE:compile
[INFO] | | \- aopalliance:aopalliance:jar:1.0:compile
[INFO] | +- org.springframework:spring-expression:jar:4.2.1.RELEASE:compile
[INFO] | \- org.springframework:spring-web:jar:4.2.1.RELEASE:compile
[INFO] +- com.fasterxml.jackson.core:jackson-databind:jar:2.4.1:compile
[INFO] | +- com.fasterxml.jackson.core:jackson-annotations:jar:2.4.0:compile
[INFO] | \- com.fasterxml.jackson.core:jackson-core:jar:2.4.1:compile
[INFO] +- org.hibernate:hibernate-core:jar:4.3.5.Final:compile
[INFO] | +- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
[INFO] | +- org.jboss.logging:jboss-logging-annotations:jar:1.2.0.Beta1:compile
[INFO] | +- org.jboss.spec.javax.transaction:jboss-transaction-api_1.2_spec:jar:1.0.0.Final:compile
[INFO] | +- dom4j:dom4j:jar:1.6.1:compile
[INFO] | | \- xml-apis:xml-apis:jar:1.0.b2:compile
[INFO] | +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.4.Final:compile
[INFO] | +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] | +- org.javassist:javassist:jar:3.18.1-GA:compile
[INFO] | +- antlr:antlr:jar:2.7.7:compile
[INFO] | \- org.jboss:jandex:jar:1.1.0.Final:compile
[INFO] +- org.hibernate:hibernate-entitymanager:jar:4.3.5.Final:compile
[INFO] +- commons-dbcp:commons-dbcp:jar:1.4:compile
[INFO] | \- commons-pool:commons-pool:jar:1.5.4:compile
[INFO] +- org.springframework:spring-orm:jar:4.2.1.RELEASE:compile
[INFO] | +- org.springframework:spring-jdbc:jar:4.2.1.RELEASE:compile
[INFO] | \- org.springframework:spring-tx:jar:4.2.1.RELEASE:compile
[INFO] +- org.springframework.data:spring-data-jpa:jar:1.11.1.RELEASE:provided
[INFO] | +- org.springframework.data:spring-data-commons:jar:1.13.1.RELEASE:provided
[INFO] | +- org.aspectj:aspectjrt:jar:1.8.10:provided
[INFO] | +- org.slf4j:slf4j-api:jar:1.7.24:provided
[INFO] | \- org.slf4j:jcl-over-slf4j:jar:1.7.24:provided
[INFO] +- org.springframework.data:spring-data-releasetrain:pom:Kay-M4:provided
[INFO] +- mysql:mysql-connector-java:jar:5.1.6:compile
[INFO] \- jstl:jstl:jar:1.2:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.661s
[INFO] Finished at: Tue Nov 14 18:06:45 IST 2017
[INFO] Final Memory: 10M/244M
[INFO] --------------------------------------------------------------------
【问题讨论】：
你在使用 maven 构建吗？ @canillas 是的，我正在使用 maven 你能发布你的 pom 和你的依赖树吗？看起来您缺少一个依赖项，或者同一个库有多个版本（特别检查您的 spring-core 依赖项） 我还添加了 pom.xml @canillas 我认为你有依赖版本问题。在你的项目目录中执行 mvn dependency:tree 并检查它。你也可以发布结果。 【参考方案1】：@Repository 用于注解配置。您尝试以 2 种方式定义 bean，在 xml 中和通过注释 - 这是一种不好的做法，可能会导致进一步的问题。
尝试从 xml 中删除下一行：
<beans:bean id="employeeRepo" class="com.spring.crud.dao.EmployeeRepo" abstract="true"/>
我猜你使用@ComponentScan注解。
【讨论】：
【参考方案2】：感谢大家的支持..！
我找到了解决方案，它是通过将 spring-core 版本更新到最新的它开始创建 bean :)
【讨论】：
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