userDetailsService 的冲突 beans

Question

我正在开发具有 spring-安全性的 Spring-MVC 应用程序，我有 2 种不同类型的用户可以登录，一种来自个人帐户，一种来自组帐户。所以基本上我想要 2 daoAuthenticationMethods。对于两者，我都实现了 UserDetails 和 userDetailsService 接口。在参考 this 上的 post 之后，我正在尝试实施该方法。我得到的错误是与服务层中的 userDetailsService 冲突。我知道我不能使用 2 userDetailsService，但是如果我在 xml 的属性选项卡中添加其他内容，我会收到未知的属性错误。请检查配置，请告诉我我可能做错了什么。

错误日志：

Offending resource: ServletContext resource [/WEB-INF/spring/appServlet/security-applicationContext.xml]; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'userDetailsService' for bean class [com.journaldev.spring.service.GroupLoginServiceImpl] conflicts with existing, non-compatible bean definition of same name and class [com.journaldev.spring.service.LoginServiceImpl]
    at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:70)
    at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85)

安全应用-context.xml :

<!-- Global Security settings -->
<security:global-method-security pre-post-annotations="enabled" />
<security:http create-session="ifRequired" use-expressions="true" auto-config="true" disable-url-rewriting="true">
    <security:form-login login-page="/" default-target-url="/canvas/list"
                         always-use-default-target="false"  authentication-failure-url="/denied.jsp" />

<bean id="springSecurityFilterChain" class="org.springframework.security.web.FilterChainProxy">
    <security:filter-chain-map path-type="ant">
        <security:filter-chain pattern="/**" filters="authenticationProcessingFilterForPersonal, authenticationProcessingFilterForGroup"/>
    </security:filter-chain-map>
</bean>

<bean id="authenticationProcessingFilterForPersonal"
      class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManagerForPersonal"/>
    <property name="filterProcessesUrl" value="/j_spring_security_check_for_person" />

</bean>

<bean id="authenticationProcessingFilterForGroup"
      class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManagerForGroup"/>
    <property name="filterProcessesUrl" value="/j_spring_security_check_for_group"/>
</bean>


<bean id="authenticationManagerForPersonal" class="org.springframework.security.authentication.ProviderManager">

<property name="providers">
        <list>
            <bean class="org.springframework.security.authentication.dao.DaoAuthenticationProvider">
                <property name="userDetailsService">
                    <ref bean="LoginServiceImpl"/>
                </property>
                <property name="passwordEncoder" ref="encoder"/>
            </bean>
        </list>
    </property>
</bean>

<bean id="authenticationManagerForGroup" class="org.springframework.security.authentication.ProviderManager">
    <property name="providers">
        <list>
            <bean class="org.springframework.security.authentication.dao.DaoAuthenticationProvider">
                <property name="userDetailsService">
                    <ref bean="GroupLoginServiceImpl"/>
                </property>
                <property name="passwordEncoder" ref="encoder"/>
            </bean>
        </list>
    </property>
</bean>


<security:authentication-manager alias="authenticationManager">
    <security:authentication-provider ref="authenticationManagerForPersonal"/>
    <security:authentication-provider ref="authenticationManagerForGroup"/>
</security:authentication-manager>

<beans:bean id="encoder"
            class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder">
    <beans:constructor-arg name="strength" value="11" />
</beans:bean>

登录服务实现：

// This method is for the personalAccount
@Transactional
@Service("userDetailsService")
public class LoginServiceImpl implements UserDetailsService{

    @Autowired private PersonDAO personDAO;
    @Autowired private Assembler assembler;

    private static final GrantedAuthority USER_AUTH = new SimpleGrantedAuthority("ROLE_USER");

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException,DataAccessException {
        Person person = personDAO.findPersonByUsername(username.toLowerCase());
            if(person == null) { throw new UsernameNotFoundException("Wrong username or password");} 
        return assembler.buildUserFromUserEntity(person);
    }
}

GroupLoginServiceImpl :

@Transactional
@Service("userDetailsService")  // I cannot change this, it throws me error when I change this or remove this
public class GroupLoginServiceImpl implements UserDetailsService {

    @Autowired
    private GroupMembersDAO groupMembersDAO;

    @Autowired
    private GroupAssembler groupAssembler;

    private static final GrantedAuthority USER_AUTH = new SimpleGrantedAuthority("ROLE_GROUP");

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException,DataAccessException {
        GroupMembers groupMembers = groupMembersDAO.findMemberByUsername(username.toLowerCase());
        if(groupMembers == null) { throw new UsernameNotFoundException("Wrong username or password");} 
        return groupAssembler.buildUserFromUserEntity(groupMembers);
    }
}

如有必要，我也可以 post 任何其他方法。请让我知道该怎么做。欢迎任何指点。谢谢。

Answer 1

我想你误解了 XML 的写法。第一个实例应该是这样的：

<property name="userDetailsService" ref="userDetailsService">

第二个：

<property name="userDetailsService" ref="groupDetailsService">

userDetailsService 的冲突 beans

Conflicting beans of userDetailsService

spring

spring-mvc

spring-security

userDetailsS​​ervice 的冲突 beans

Conflicting beans of userDetailsService

spring

spring-mvc

spring-security

userDetailsService 的冲突 beans