无法通过 @Autowired 将 AuthenticationManager 传递给自定义过滤器

我正在尝试通过 @Autowired 注释将过滤器 JWTLoginFilter 传递给 WebSecurityConfig WebSecurityConfigurerAdapter 。当 JWTLoginFilter 尝试从 WebSecurityConfig 获取 AuthenticationManager 时，就会出现问题。

当我启动服务器时，出现以下错误：

描述：

应用程序上下文中一些bean的依赖关系形成 一个周期：

文件中定义的 JWTLoginFilter [C:\Users\user\workspace\backend\target\classes\pl\dn\schoolsystem\service\jwt\JWTLoginFilter.class]

webSecurityConfig（字段 pl.dn.schoolsystem.service.jwt.JWTLoginFilter pl.dn.schoolsystem.config.WebSecurityConfig.jwtLoginFilter)

错误图像

我认为这是循环依赖注入。我被困在这个问题上，我不知道如何解决。

网络安全配置：

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private Environment env;

    @Autowired
    private UserSecurityService userSecurityService;

    @Autowired
    JWTLoginFilter jwtLoginFilter;

    private static final String Salt = "salt"; // should be protected better

    @Bean
    public BCryptPasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder(12, new SecureRandom(Salt.getBytes()));
    }

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable().
        authorizeRequests().antMatchers("/").permitAll()
        .antMatchers(HttpMethod.POST, "/login").permitAll()
        .antMatchers("/admin/**").hasRole("ADMIN")
        .anyRequest().authenticated()

        .and()

        //.addFilterBefore(new JWTLoginFilter("/login", authenticationManager()), 
                //UsernamePasswordAuthenticationFilter.class)
        .addFilterBefore(jwtLoginFilter, 
                UsernamePasswordAuthenticationFilter.class)
        .addFilterBefore(new JWTAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class);        
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userSecurityService).passwordEncoder(passwordEncoder());
    }

}

JWT登录过滤器：

@Component
public class JWTLoginFilter extends AbstractAuthenticationProcessingFilter{

    @Autowired
    UserService userService;

    @Autowired
    public JWTLoginFilter(@Value("/login") String url, AuthenticationManager authManager) {
        super(new AntPathRequestMatcher(url));
        setAuthenticationManager(authManager);
    }

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

        System.out.println("Jestem w JwtLogginFilter.attemptAuthentication -------------------------------------");

        AccountCredentials creds = new ObjectMapper()
            .readValue(req.getInputStream(), AccountCredentials.class);

        User user = userService.findByUsername(creds.getUsername());

        return getAuthenticationManager().authenticate(
                new UsernamePasswordAuthenticationToken(
                        creds.getUsername(),
                        creds.getPassword(),
                        user.getAuthorities()
                        )
        );
    }

    @Override
    protected void successfulAuthentication(HttpServletRequest request,
            HttpServletResponse response, FilterChain chain,
            Authentication authResult) throws IOException, ServletException {

        System.out.println("Jestem w JWTLogginFilter.successfulAuthentication -------------------------------------- ");

        System.out.println("authResult.getName(): " + authResult.getName());
        TokenAuthenticationService.addAuthentication(response, authResult.getName());

    }



}

我正在使用 Spring Boot 1.5.4。感谢您的建议

Your WebSecurityConfig明确要求JWTLoginFilter注入其中，并且JWTLoginFilter要求AuthenticationManager被注入到它的构造函数中。AuthenticationManager是由提供WebSecurityConfig，所以你有一个循环依赖。

Remove @Component注释来自JWTLoginFilter并将过滤器定义为一个 beanWebSecurityConfig:

@Bean
public JWTLoginFilter jwtLoginFilter() {
    return new JWTLoginFilter("/login", authenticationManager());
}

您可能还需要注入UserService在此方法中手动（例如，通过构造函数）。