如何解决SpringSecurity自定义AuthenticationProvider无法@Autowire的问题

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自定义AuthenticationProvider无法@Autowire的解决

在AuthenticationProvider中使用@Autowired注入时始终报Null问题

找了半天发现应该在SecurityConfig配置类中

@EnableWebSecuritypublic class SecurityConfig extends WebSecurityConfigurerAdapter{

在设置AuthenticationProvider时

应该使用@Bean的方式设置

@Bean    CustomAuthenticationProvider customAuthenticationProvider() {        return new CustomAuthenticationProvider();    }   @Override    protected void configure(AuthenticationManagerBuilder auth) throws Exception {        auth.authenticationProvider(customAuthenticationProvider());    }

之前的错误的设置方式是

@Override    protected void configure(AuthenticationManagerBuilder auth) throws Exception {        auth.authenticationProvider(new CustomAuthenticationProvider());    }

好了，这就可以实现AuthenticationProvider时自由的使用@Autowired了

自定义AuthenticationProvider的简单例子

xml 配置

net.mantis.security.auth.MyAuthenticationProvider

public class MyAuthenticationProvider implements AuthenticationProvider {     UserDetailsService userDetailsService;    public Authentication authenticate(Authentication authentication)            throws AuthenticationException {         //username        System.out.println("user name: "+authentication.getName());        //password        System.out.println("password: "+authentication.getCredentials());        System.out.println("getPrincipal: "+authentication.getPrincipal());        System.out.println("getAuthorities: "+authentication.getAuthorities());        System.out.println("getDetails: "+authentication.getDetails());        UserDetails userDetails = (UserDetails)this.userDetailsService.loadUserByUsername(authentication.getName());              UsernamePasswordAuthenticationToken result = new UsernamePasswordAuthenticationToken(                userDetails, authentication.getCredentials(),userDetails.getAuthorities());        return result;    }    public boolean supports(Class authentication) {         return true;    }    public void setUserDetailsService(UserDetailsService userDetailsService){        this.userDetailsService = userDetailsService;    }}

net.mantis.security.auth.NMUserDetailsService

public class NMUserDetailsService implements UserDetailsService {    @Override    public UserDetails loadUserByUsername(String userName)            throws UsernameNotFoundException {        ArrayList list = new ArrayList();        list.add(new SimpleGrantedAuthority("ROLE_SUPERVISOR"));        User details = new User("rod", "koala", list);        return details;    }}

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