创建名为“*repository”的 bean 时出错

Question

我有一个 Maven 项目。 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>root</groupId>
    <artifactId>CourseWork5</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>coursework</name>
    <description></description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity4</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

另外，我有一个实体地址。

package root.entity;
import javax.persistence.*;

@Entity
@Table(name = "Address")
public class Address {
   ...
}

我有这个条目的存储库。

package root.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import root.entity.Address;

@Repository
public interface AddressRepository extends JpaRepository<Address, Integer> {
   ...
}

和服务接口与实现。

package root.service.interfaces;
import root.entity.Address;
public interface AddressServiceInterface {
    ...
}

package root.service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import root.entity.Address;
import root.repository.AddressRepository;
import root.service.interfaces.AddressServiceInterface;

@Service
public class AddressService implements AddressServiceInterface{
    ...
}

我的 application.properties 文件：

#DB properties:
db.driver=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/labsdb?useSSL=false
db.username=root
db.password=rootPassword
 
#Hibernate Configuration:
db.hibernate.dialect=org.hibernate.dialect.MySQLDialect
db.hibernate.show_sql=true
db.entitymanager.packages.to.scan=root.entity
db.hibernate.hbm2ddl.auto = create

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/labsdb
spring.datasource.username=root
spring.datasource.password=rootPassword

security.require-ssl=false

我的启动文件：

package root;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class TestApp {
    public static void main(String[] args) {
        SpringApplication.run(TestApp.class, args);
    }
}

但是，运行应用程序后，我有错误：

org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'addressController': Unsatisfied
dependency expressed through field 'service'; nested exception is
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'addressService': Unsatisfied dependency
expressed through field 'repository'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'addressRepository': Invocation of init method
failed; nested exception is java.lang.AbstractMethodError:
org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepository(Lorg/springframework/data/repository/core/RepositoryInformation;)Ljava/lang/Object;
    at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:592)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:370)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:754)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
~[spring-context-4.3.4.RELEASE.jar:4.3.4.RELEASE]   at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
~[spring-context-4.3.4.RELEASE.jar:4.3.4.RELEASE]   at
org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)
~[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]  at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]   at
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)
[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]   at
org.springframework.boot.SpringApplication.run(SpringApplication.java:313)
[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]   at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)
[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]   at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)
[spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]   at
root.TestApp.main(TestApp.java:10) [classes/:na]    at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
~[na:1.8.0_65]  at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
~[na:1.8.0_65]  at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[na:1.8.0_65]  at java.lang.reflect.Method.invoke(Method.java:497)
~[na:1.8.0_65]  at
org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)
[spring-boot-devtools-1.4.0.RELEASE.jar:1.4.0.RELEASE] Caused by:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'addressService': Unsatisfied dependency
expressed through field 'repository'; nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'addressRepository': Invocation of init method
failed; nested exception is java.lang.AbstractMethodError:
org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepository(Lorg/springframework/data/repository/core/RepositoryInformation;)Ljava/lang/Object;
    at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:592)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:370)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1219)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:551)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:589)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     ... 24 common frames
omitted Caused by:
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'addressRepository': Invocation of init method
failed; nested exception is java.lang.AbstractMethodError:
org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepository(Lorg/springframework/data/repository/core/RepositoryInformation;)Ljava/lang/Object;
    at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1131)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1059)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:589)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     ... 37 common frames
omitted Caused by: java.lang.AbstractMethodError:
org.springframework.data.repository.core.support.RepositoryFactorySupport.getTargetRepository(Lorg/springframework/data/repository/core/RepositoryInformation;)Ljava/lang/Object;
    at
org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:199)
~[spring-data-commons-1.12.2.RELEASE.jar:na]    at
org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:266)
~[spring-data-commons-1.12.2.RELEASE.jar:na]    at
org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:252)
~[spring-data-commons-1.12.2.RELEASE.jar:na]    at
org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:84)
~[spring-data-jpa-1.3.3.jar:na]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1642)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579)
~[spring-beans-4.3.4.RELEASE.jar:4.3.4.RELEASE]     ... 47 common frames
omitted

请帮我。 我有一个具有相同结构和逻辑的简单应用程序，但它运行良好。 所以，我不知道如何解决这个问题。

Answer 1

将@NoRepositoryBean添加到您的CrudRepository 。 这将允许自动配置仍然发生，而无需手动设置组件扫描基础包。

接口org.springframework.data.repository.Repository是实际 spring 数据存储库的标记。 由于您的CrudRepository扩展了Repository spring 正在尝试为T初始化一个名为crudRepository的 Spring 托管存储库（本质上翻译为 Object）。 由于 Object 不是由 Hibernate 管理的，因此它在启动和崩溃时无法验证。

@NoRepositoryBean将告诉 Spring 不要为实现Repository的特定类生成后备存储Repository 。

Answer 2

我猜你错过了

@Autowired 
Private AddressRepository addressRepository;

在您的服务方法中。

Answer 3

问题是没有实现 AddressRepository。

我建议在实际实现而不是接口上使用诸如 @Repository 和 @Service 之类的构造型。

编辑我现在看到您正在使用 spring 数据来提供 AddressRepository 接口的实现。 也许那里没有正确连接？ 您发布的异常表明无法初始化 AddressRepository。 之前没有使用过 spring 数据，我不确定这是为什么。