在我的 Spring Boot 应用程序中，我有以下两个类:

@EnableWebSecurity
public class AppSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtAuthenticationFilter jwtAuthenticationFilter;

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
        // TODO re-enable csrf after dev is done
        .csrf()
            .disable()
            // we must specify ordering for our custom filter, otherwise it
            // doesn't work
            .addFilterAfter(jwtAuthenticationFilter,
                    UsernamePasswordAuthenticationFilter.class)
            // we don't need Session, as we are using jwt instead. Sessions
            // are harder to scale and manage
            .sessionManagement()
            .sessionCreationPolicy(SessionCreationPolicy.STATELESS);
   }
}

和:

@Component
public class JwtAuthenticationFilter extends
        AbstractAuthenticationProcessingFilter {

    /*
     * we must set authentication manager for our custom filter, otherwise it
     * errors out
     */
    @Override
    @Autowired
    public void setAuthenticationManager(
            AuthenticationManager authenticationManager) {
        super.setAuthenticationManager(authenticationManager);
    }
}

JwtAuthenticationFilter 通过其 setAuthenticationManager 方法依赖于 AuthenticationManager bean，但该 bean 是在 AppSecurityConfig 中创建的有 JwtAuthenticationFilter Autowiring 。这整个事情创建了一个循环依赖。 我该如何解决这个问题？

最佳答案

我按照此处的建议解决了这个问题: Cannot pass AuthenticationManager to custom filter by @Autowired

我从 JwtAuthenticationFilter 中删除了 @Component 而不是将 JwtAuthenticationFilter Autowiring 到 WebSecurityConfig 类，我定义了 bean那里:

@Bean
public JwtAuthenticationFilter JwtAuthenticationFilter() {
    return new JwtAuthenticationFilter();
} 

关于java - AuthenticationProcessingFilter 和 WebSecurityConfigurerAdapter 导致循环依赖，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52510873/