春季安全bean未找到異常

Question

我正在嘗試為mvc項目設置spring security，但遇到了麻煩。 我正在使用Spring Security 3.1.4.Release。 我已經設置了spring-security.xml文件，並設置了mvc-dispatcher-servlet文件進行配置。 現在，我的用戶詳細信息Bean出現一個bean not found異常。

在intellij中，我的myUserDetailService收到“無法解析bean”消息。 我也無法解析程序包“ controller”。 運行項目時的根本錯誤是：

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.security.authentication.dao.DaoAuthenticationProvider#0': Cannot resolve reference to bean 'myUserDetailService' while setting bean property 'userDetailsService'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'myUserDetailService' is defined
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:329) [spring-beans-3.2.0.RELEASE.jar:3.2.0.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:107) [spring-beans-3.2.0.RELEASE.jar:3.2.0.RELEASE]

這是我的spring-security.xml文件：

<beans:beans xmlns="http://www.springframework.org/schema/security"
         xmlns:beans="http://www.springframework.org/schema/beans"
         xmlns:context="http://www.springframework.org/schema/context"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
       http://www.springframework.org/schema/security
       http://www.springframework.org/schema/security/spring-security-3.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


<!-- Enabling Spring beans auto-discovery -->
   <context:component-scan base-package="controller, com.company.admin" />

<http auto-config="true">
    <intercept-url pattern="/admin/*" access="ROLE_USER"  />
    <form-login login-page="/login" default-target-url="/admin/welcome"   authentication-failure-url="/loginfailed" />
    <logout logout-success-url="/logout" />
</http>

<authentication-manager>
    <authentication-provider user-service-ref="myUserDetailService"/>
</authentication-manager>

</beans:beans>

這是我的mvc-dispatcher-servlet.xml：

<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:mvc="http://www.springframework.org/schema/mvc"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">


<!-- Enabling Spring beans auto-discovery -->
<context:component-scan base-package="com.company.admin" />

<!-- Enabling Spring MVC configuration through annotations -->
<mvc:annotation-driven />

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/pages/"/>
    <property name="suffix" value=".jsp"/>
</bean>
</beans>

這是我的web.xml：

<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<display-name>Spring MVC Application</display-name>


<filter>
    <filter-name>springSecurityFilterChain</filter-name>
    <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
    <filter-name>springSecurityFilterChain</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/mvc-dispatcher-servlet.xml,
        /WEB-INF/spring-security.xml
    </param-value>
</context-param>

<servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<listener>
    <listener-class>
        org.springframework.web.context.ContextLoaderListener
    </listener-class>
</listener>
</web-app>

我基本上是想按照本教程進行操作： http : //kh-yiu.blogspot.com/2012/12/spring-mvc-security-custom.html和UserDetailServiceImpl與此完全相同，但是我確實在其中我的main / java目錄中的另一個文件夾。 重要的是要注意我使用注釋來聲明該類：

@Service("myUserDetailService")
public class UserDetailsServiceImpl implements UserDetailsService{

有任何想法嗎？ 我很難找到與我使用的相同的春季版本的教程，因此很有可能我搞砸了xsd引用。 謝謝。

Answer 1

您要添加對以下內容的引用：

<authentication-provider user-service-ref="myUserDetailService"/>

您需要一個具有該ID的bean。類似：

<bean id="myUserDetailService" class="the.class.of.your.service"></bean>

請打破您的例外情況：

//Error creating the bean
Caused by: org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'org.springframework.security.authentication.dao.DaoAuthenticationProvider#0': 
//The myUserDetailService reference cannot be solved, it cannot be found or it has syntax error or something is wrong there
Cannot resolve reference to bean 'myUserDetailService' while setting bean property 'userDetailsService'; 
//The root cause is an exception deeper.
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: 
//You don't have a bean with this name:
No bean named 'myUserDetailService' is defined

更新：

現在，您已經添加了@Service myUserDetailService ...，它可能重復了為什么將類注釋為@Service不會創建bean？