WebSecurityConfigurerAdapter过时的替代方式

SpringSecurity配置，用着用着就过期了，而且还报unsafe异常，真的是不让懒人活着啊。

万能的网络上找答案

找了一圈，都说用 @Bean的方式注入，代替继承WebSecurityConfigurerAdapter。

试了一下，老是报异常：

Found WebSecurityConfigurerAdapter as well as SecurityFilterChain. Please select just one.

我已经把 

@EnableWebSecurity

去掉了，还是报这个，不知道哪里又加载了

WebSecurityConfiguration

这个类了。

索性不管了，直接覆盖。

看源码

@Configuration(
    proxyBeanMethods = false
)
public class WebSecurityConfiguration implements ImportAware, BeanClassLoaderAware {
    ‘’‘’‘’‘’
 
    @Bean
    @DependsOn({"springSecurityFilterChain"})
    public SecurityExpressionHandler webSecurityExpressionHandler() {
        return this.webSecurity.getExpressionHandler();
    }
 
    @Bean(
        name = {"springSecurityFilterChain"}
    )
    public Filter springSecurityFilterChain() throws Exception {
        boolean hasConfigurers = this.webSecurityConfigurers != null && !this.webSecurityConfigurers.isEmpty();
        boolean hasFilterChain = !this.securityFilterChains.isEmpty();
        Assert.state(!hasConfigurers || !hasFilterChain, "Found WebSecurityConfigurerAdapter as well as SecurityFilterChain. Please select just one.");
        if (!hasConfigurers && !hasFilterChain) {
            WebSecurityConfigurerAdapter adapter = (WebSecurityConfigurerAdapter)this.objectObjectPostProcessor.postProcess(new WebSecurityConfigurerAdapter() {
            });
            this.webSecurity.apply(adapter);
        }
 
        Iterator var7 = this.securityFilterChains.iterator();
 
        while(true) {
            while(var7.hasNext()) {
                SecurityFilterChain securityFilterChain = (SecurityFilterChain)var7.next();
                this.webSecurity.addSecurityFilterChainBuilder(() -> {
                    return securityFilterChain;
                });
                Iterator var5 = securityFilterChain.getFilters().iterator();
 
                while(var5.hasNext()) {
                    Filter filter = (Filter)var5.next();
                    if (filter instanceof FilterSecurityInterceptor) {
                        this.webSecurity.securityInterceptor((FilterSecurityInterceptor)filter);
                        break;
                    }
                }
            }
 
            var7 = this.webSecurityCustomizers.iterator();
 
            while(var7.hasNext()) {
                WebSecurityCustomizer customizer = (WebSecurityCustomizer)var7.next();
                customizer.customize(this.webSecurity);
            }
 
            return (Filter)this.webSecurity.build();
        }
    }
 
    、、、、、、、
}

就是 Assert.state(!hasConfigurers || !hasFilterChain, "Found WebSecurityConfigurerAdapter as well as SecurityFilterChain. Please select just one.");

这句报出来的。

@Configuration
@RequiredArgsConstructor
@EnableWebSecurity(debug = true)
public class WebSecurityConfig
{
 
    private final AuthenticationConfiguration authenticationConfiguration;
 
    @Bean( name = {"springSecurityFilterChain"})
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception{
        http.authorizeRequests()
                .requestMatchers(EndpointRequest.toAnyEndpoint()).permitAll()
                .antMatchers("/**").permitAll()
                .anyRequest().authenticated();
        return http.build();
    }
 
 
    @Bean
    public AuthenticationManager authenticationManager() throws Exception{
        AuthenticationManager authenticationManager = authenticationConfiguration.getAuthenticationManager();
        return authenticationManager;
    }
 
 
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
 
}

 启动不了，看看异常：

Description:
 
The bean 'springSecurityFilterChain', defined in class path resource [com/micro/exchange/auth/config/WebSecurityConfig.class], could not be registered. A bean with that name has already been defined in class path resource [org/springframework/security/config/annotation/web/configuration/WebSecurityConfiguration.class] and overriding is disabled.
 
Action:
 
Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

挺贴心，还给了解决方案，咱们就是为了覆盖，不能修改名字，选第二个吧

spring:
  main:
    allow-bean-definition-overriding: true

修改完，启动，还是没启动起来，晕了。

AuthorizationServerConfigurerAdapter 继承类报 authenticationManager空指针

原因：继承类先于WebSecurityConfig类加载了。

网上说给WebSecurityConfig 加 @Order, 但是没有生效，不知道是缓存还是什么原因。

幸好有

@AutoConfigureAfter(WebSecurityConfig.class)

启动，调用，没有生效

参考：SpringBoot: @AutoConfigureAfter 和 @AutoConfigureBefore失效问题_零点冰.的博客-CSDN博客_autoconfigureafter

这篇文章比较实用，顺序生效了。

问题解决。

解决问题还是得撸下源码，才能真正解决问题