循环引用我无法识别

Question

这是错误消息：

org.springframework.beans.factory.BeanCurrentlyInCreationException：创建名称为“securityConfig”的bean时出错：请求的bean当前正在创建中：是否存在无法解析的循环引用？

这是SecurityConfig.java文件：

package com.example.demo.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;
import org.springframework.beans.factory.annotation.Autowired;
import com.example.demo.service.UserService;

@Configuration
public class SecurityConfig {

    @Autowired
    private UserService userService;

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userService)
            .passwordEncoder(bCryptPasswordEncoder());
    }


    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .requestMatchers(new AntPathRequestMatcher("/register")).permitAll()
                .requestMatchers(new AntPathRequestMatcher("/admin/**")).hasRole("ADMIN")
                .anyRequest().authenticated()
            .and()
            .formLogin().loginPage("/login").permitAll()
            .and()
            .logout().permitAll();
        return http.build();
    }

    @Bean
    public BCryptPasswordEncoder bCryptPasswordEncoder() {
        return new BCryptPasswordEncoder();
    }

   
     


}

当我运行应用程序时

@SpringBootApplication(exclude = { SecurityAutoConfiguration.class, ManagementWebSecurityAutoConfiguration.class })

这不允许检查引用，我收到另一个错误：

Parameter 0 of method configureGlobal in com.example.demo.config.SecurityConfig required a bean of type 'org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder' that could not be found.


Action:

Consider defining a bean of type 'org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder' in your configuration.

请指导一下，我是 Spring Boot 和自学的新手。

Answer 1

您不需要排除 SecurityAutoConfiguration，只需将静态修饰符添加到 bCryptPasswordEncoder 方法