我们有Spring MVC应用程序。我们正在尝试将Spring安全性集成到其中。

我们已经编写了自定义身份验证提供程序，它将执行身份验证工作。

以下是我的自定义身份验证提供程序的代码。

    public class CustomAuthenticationProvider extends DaoAuthenticationProvider {

    @Autowired
    private AuthenticationService authenticationService;

    @Override
    public Authentication authenticate(Authentication authentication) {

        CustomAuthenticationToken auth = (CustomAuthenticationToken) authentication;

        String username = String.valueOf(auth.getPrincipal());
        String password = String.valueOf(auth.getCredentials());

        try {

            Users user = new User();
            user.setUsername(username);
            user.setPassword(PasswordUtil.encrypt(password));

            user = authenticationService.validateLogin(user);

            return auth;
        } catch (Exception e) {
            throw new BadCredentialsException("Username/Password does not match for " + username);
        }
    }

    @Override
    public boolean supports(Class<? extends Object> authentication) {
        return (CustomAuthenticationToken.class.isAssignableFrom(authentication));

    }
}

在这里，我在下一行获取NullpointerException

user = authenticationService.validateLogin(user);

不会在自定义身份验证提供程序中自动连接authenticationService。虽然相同的服务authenticationService在我的MVC控制器中以相同的方式自动接线。

这是因为身份验证提供程序是Spring安全组件吗？

下面是我的web.xml

    <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>
        /WEB-INF/spring/myApp-security.xml
    </param-value>
</context-param>

<servlet>
    <servlet-name>myApp</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/myApp-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>myApp</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<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>

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

编辑1：-

我在我的spring安全配置文件中添加了以下几行。

<beans:bean id="customAuthenticationProvider" class="com.myApp.security.provider.CustomAuthenticationProvider">
    <beans:property name="userDetailsService" ref="userDetailsService"/>   
</beans:bean>

请帮助如何在Spring安全组件中自动连接服务类？