Question

我有测试Spring Data JPA的示例测试程序，但似乎没有生成存储库。

我的配置：

<?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:context="http://www.springframework.org/schema/context"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
            http://www.springframework.org/schema/context
            http://www.springframework.org/schema/context/spring-context-4.0.xsd
            http://www.springframework.org/schema/jee
            http://www.springframework.org/schema/jee/spring-jee.xsd">

    <import resource="securityConfig.xml" />

    <context:annotation-config />
    <context:component-scan base-package="com.test">
        <context:exclude-filter type="annotation"
                expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

    <jee:jndi-lookup id="myDataSource" jndi-name="java:comp/env/jdbc/test"/>

    <bean id="myEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="myDataSource" />
        <property name="packagesToScan" value="com.test.security" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.hbm2ddl.auto">create-drop</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
            </props>
        </property>
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="myEmf" />
    </bean>
</beans>

用户实体：

package com.test.security;

import org.springframework.security.core.CredentialsContainer;
import org.springframework.security.core.userdetails.UserDetails;

@Entity
@Table
public class UserPrincipal implements UserDetails, CredentialsContainer, Cloneable {
    private static final long serialVersionUID = 1L;

    private long id;
....
}

UserRespository：

package com.test.security;

import org.springframework.data.repository.CrudRepository;

public interface UserRepository extends CrudRepository<UserPrincipal, Long>
{
    UserPrincipal getByUsername(String username);
}

UserService：

package com.test.security;

@Service
public class UserService implements UserDetailsService {
    @Inject
    UserRepository userRepository;

    @Override
    @Transactional
    public UserPrincipal loadUserByUsername(String username) {
        UserPrincipal principal = userRepository.getByUsername(username);
        // make sure the authorities and password are loaded
        principal.getAuthorities().size();
        principal.getPassword();
        return principal;
    }
}

我收到此错误：

org.springframework.beans.factory.BeanCreationException：错误创建名为'org.springframework.security.filterChains'的bean：无法解析对bean的引用 'org.springframework.security.web.DefaultSecurityFilterChain＃0'而使用键[0]设置bean属性'sourceList';嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.web.DefaultSecurityFilterChain＃0'：无法解析对bean的引用 'org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter＃0' 用key [3]设置构造函数参数;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter＃0'：无法解析对bean的引用 'org.springframework.security.authentication.ProviderManager＃0'而设置bean属性'authenticationManager';嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.authentication.ProviderManager＃0'：无法解析对bean的引用 'org.springframework.security.config.authentication.AuthenticationManagerFactoryBean＃0' 设置构造函数参数时;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.config.authentication.AuthenticationManagerFactoryBean＃0'： FactoryBean在对象创建时抛出异常;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.authenticationManager'：无法解决引用bean 'org.springframework.security.authentication.dao.DaoAuthenticationProvider＃0' 用key [0]设置构造函数参数;嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误用名字创建bean 'org.springframework.security.authentication.dao.DaoAuthenticationProvider＃0'：设置bean时无法解析对bean'userService'的引用 property'userDetailsService';嵌套异常是 org.springframework.beans.factory.BeanCreationException：错误创建名为'userService'的bean：注入自动装配依赖失败;嵌套异常是 org.springframework.beans.factory.BeanCreationException：不能 autowire字段：com.test.security.UserRepository com.test.security.UserService.userRepository;嵌套异常是 org.springframework.beans.factory.NoSuchBeanDefinitionException：没有找到[com.test.security.UserRepository]类型的限定bean 依赖：预计至少有1个bean有资格成为autowire 这种依赖的候选人。依赖注释： {@ javax.inject.Inject（）}

Answer 1

找不到[com.test.security.UserRepository]类型的限定bean用于依赖：期望至少有一个bean符合此依赖关系的autowire候选资格。依赖注释：{@ javax.inject.Inject（）}

获取spring数据jpa名称空间（来自spring-data-jpa jar）

xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation=
            http://www.springframework.org/schema/data/jpa 
            http://www.springframework.org/schema/data/jpa/spring-jpa.xsd

并使用jpa名称空间的<repositories>元素来扫描存储库

<jpa:repositories base-package="com.test.security"
                  entity-manager-factory-ref="myEmf"
                  transaction-manager-ref="transactionManager"/>

在Creating Repository Instances

了解详情

以下是关于<repositories>标记的摘录：

指示Spring扫描[com.test.security]及其所有子包，以查找扩展Repository或其子接口之一的接口。对于找到的每个接口，基础结构都会注册特定于持久性技术的FactoryBean，以创建处理查询方法调用的相应代理

以下是namespace info

的链接

对于Java配置，您可以使用@EnableJpaRepositories注释实现相同的功能。您可以在同一link as above

中详细了解相关信息

Spring Data JPA没有类型的限定bean ...找到依赖项

1 个答案: