Spring Data JPA没有找到...类型的符合相关性的bean

Question

我有一个测试Spring Data JPA的示例测试程序，但似乎没有生成存储库。

<?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>

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;
....
}

package com.test.security;

import org.springframework.data.repository.CrudRepository;

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

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;
    }
}

org.springframework.beans.factory.beanCreationException：创建名为“org.springframework.security.filterchains”的bean时出错：在使用键[0]设置bean属性“source list”时，无法解析对bean“org.springframework.security.web.defaultsecurityfilterchain#0”的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.web.DefaultSecurityFilterChain#0'的bean时出错：在使用键[3]设置构造函数参数时，无法解析对bean'org.springframework.security.web.authentication.usernamePasswordAuthenticationFilter#0'的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter#0'的bean时出错：在设置bean属性'Authentication Manager'时无法解析对bean'org.springframework.security.authentication.ProviderManager#0'的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.authentication.ProviderManager#0'的bean时出错：在设置构造函数参数时无法解析对bean'org.springframework.security.authentication.authenticationManagerFactoryBean#0'的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.config.authentication.authenticationManagerFactoryBean#0'的bean时出错:FactoryBean在创建对象时引发异常；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.authenticationManager'的bean时出错：在使用键[0]设置构造函数参数时，无法解析对bean'org.springframework.security.authentication.dao.authenticationProvider#0‘的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为'org.springframework.security.authentication.dao.daoAuthenticationProvider#0'的bean时出错：在设置bean属性'user detailsservice'时无法解析对bean'user service'的引用；嵌套异常是org.springframework.beans.factory.beanCreationException：创建名为“user service”的bean时出错：注入autowired依赖项失败；嵌套的异常是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]类型的符合依赖关系的bean：需要至少有1个bean符合此依赖关系的autowire候选项。依赖注释：{@javax.inject.inject（）}

Answer 1

没有为依赖项找到[com.test.security.userrepository]类型的合格bean：预期至少有1个bean符合此依赖项的autowire候选项。依赖注释：{@javax.inject.inject（）}

获取spring data jpa名称空间（从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命名空间的 元素扫描存储库

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

以下是名称空间信息的链接

对于Java配置，可以通过@enableJParepositories注释实现同样的功能。你可以在上面的链接中阅读更多关于这一点的信息