Spring Boot：Autowired CRUDRepository为空，在某些类中

Question

public interface UsersRepositoryInterface extends CrudRepository<User, Long> {

    // Query to search for users via email
    List<User> findByEmail(@Param("email") String email);
}

首先是WebSecurityConfiguererAdapter类，我在其中向筛选器添加路径。请注意带有“new jWTLoginFilter”的行，这是我尝试自动连接的类：

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private CustomUserDetailsService userDetailsServ;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable().authorizeRequests()

                //Allow options pre-flight request
                .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
            // Allow POST request to /login
                .antMatchers(HttpMethod.POST, "/login").permitAll()
            // Others must be authenticated
                .anyRequest().authenticated()
                .and()
            // We filter the api/login requests
                .addFilterBefore(new JWTLoginFilter("/login", authenticationManager()),
                    UsernamePasswordAuthenticationFilter.class)
            // And filter other requests to check the presence of JWT in header
                .addFilterBefore(new JWTAuthenticationFilter(),
                    UsernamePasswordAuthenticationFilter.class);
    }

   @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    // Change logging in from username+password to email+password
        auth.userDetailsService(userDetailsServ);
    }
}

和jWTLoginFilter类。我写了一些不相关的代码：

public class JWTLoginFilter extends AbstractAuthenticationProcessingFilter {

    @Autowired
    private UsersRepositoryInterface userRepo;

    public JWTLoginFilter(String url, AuthenticationManager authManager) {
        super(new AntPathRequestMatcher(url));
        setAuthenticationManager(authManager);
    }

    @Override
    public Authentication attemptAuthentication(
        HttpServletRequest req, HttpServletResponse response)
        throws AuthenticationException, IOException, ServletException {

        //Check if userRepo is injected
        if(userRepo == null) {
            System.out.println("Null");
        }

        AccountCredentials creds = new ObjectMapper()
            .readValue(req.getInputStream(), AccountCredentials.class);
        return getAuthenticationManager().authenticate(
            new UsernamePasswordAuthenticationToken(
                    creds.getEmail(),
                    creds.getPassword(),
                    Collections.emptyList()
            )
        );
    }
}

在调用jwtloginfilter时，println中的println将始终返回Null。

现在管用了。

使用

@Component("someName")

并将其注入WebSecurityConfig

@Resource(name="someName")
private JWTLoginFilter myFilter;

@Bean(name = BeanIds.AUTHENTICATION_MANAGER)
@Override
public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
}

@Override
@Autowired
public void setAuthenticationManager(AuthenticationManager authenticationManager) {
    super.setAuthenticationManager(authenticationManager);
}

在移除

setAuthenticationManager(authManager);

在JWTLoginFilter中的构造函数中