Question

我有像这样的UserManager类 -

@Service
public class UserManager implements UserDetailsService {

@Autowired
    UserRepositoryImpl userRepositoryImpl;

@Override
    public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {
User user = userRepositoryImpl.findUserByEmail(email);
        List<GrantedAuthority> authList = new ArrayList<GrantedAuthority>();
        authList.add(new SimpleGrantedAuthority(user.getRole().getName()));
        UserDetails userDetails = new org.springframework.security.core.userdetails.User(email,user.getPassword(),true,true,true,true,authList);
        return userDetails;
}

现在应用程序安全性是 -

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/security"
             xmlns:beans="http://www.springframework.org/schema/beans"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
             http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
             http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd">

    <http use-expressions="true" auto-config="true">
        <intercept-url pattern="/Home" access="permitAll" />
        <intercept-url pattern="/resources/**" access="permitAll" />
        <intercept-url pattern="/logout" access="permitAll" />
        <intercept-url pattern="/Admin/**" access="hasRole('Admin')" />
        <intercept-url pattern="/Teacher/**" access="hasRole('Teacher')" />
        <intercept-url pattern="/Student/**" access="hasRole('Teacher')" />
        <form-login login-page="/Login" authentication-failure-url="/Login?login_error=1" authentication-success-handler-ref="authenticationSuccessHandler" />
        <logout logout-success-url="/Login" invalidate-session="true" delete-cookies="JSESSIONID" />
    </http>

    <authentication-manager alias="authenticationManager">
        <authentication-provider user-service-ref="userManager"/>
    </authentication-manager>
</beans:beans>

在web.xml中，我添加了applicationSecurity.xml作为上下文参数 -

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/applicationContext.xml
            /WEB-INF/application-security.xml
        </param-value>
    </context-param>

问题是当我运行我的代码时抛出异常引起：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'userDetailsService'时无法解析对bean'userManager'的引用;嵌套异常是org.springframework.beans.factory.NoSuchBeanDefinitionException：没有定义名为'userManager'的bean

引起：org.springframework.beans.factory.NoSuchBeanDefinitionException：没有定义名为'userManager'的bean

如果我用控制器自动装配它，同样的userManager工作正常。由于UserManager类使用@Service注释进行注释，甚至我已经启用了在我的dispatcherServlet.xml中驱动的注释 -

<context:annotation-config/>
    <context:component-scan base-package="org.opentutor.controllers"/>
    <context:component-scan base-package="org.opentutor.configs"/>
    <context:component-scan base-package="org.opentutor.managers"/>
    <context:component-scan base-package="org.opentutor.repoimpls"/>
    <mvc:annotation-driven />

它应该找到userManager bean，但它不会。在扫描java配置之前是否有类似其加载身份验证管理器的东西。请帮助解决此错误。

Answer 1

Spring Web应用程序中上下文的生命周期如下：

ContextLoaderListener加载并合并contextConfigLocation的上下文（默认值或指定的上下文）
DispatcherServlet使用ContextLoaderListener加载的合并上下文作为父加载来加载servlet上下文。

DispatcherServlet加载的上下文可以访问ContextLoaderListener加载的上下文，但不能反过来。所以，这一点

<authentication-manager alias="authenticationManager">
    <authentication-provider user-service-ref="userManager"/>
</authentication-manager>

/WEB-INF/application-security.xml

无法访问

<context:component-scan base-package="org.opentutor.managers"/>

dispatcherServlet.xml

。

重新设计你的背景。您的servlet上下文应该只包含与servlet上下文相关的bean定义。 UserManager bean（及其相关的<component-scan>）与应用程序相关，而不是servlet，因此将其放在applicationContext.xml中。

spring身份验证管理器不绑定@Service注释的用户服务

1 个答案: