java中写SpringSecurity配置类报错Cannot resolve method 'authenticationManagerBean' in 'Object'

这个错误可能是由于缺少 `@EnableWebSecurity` 注解或者没有 `extends WebSecurityConfigurerAdapter` 导致的。请确保您的配置类中包含这些内容：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

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

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
                .antMatchers("/admin/**").hasRole("ADMIN")
                .antMatchers("/**").permitAll()
                .and()
            .formLogin()
                .loginPage("/login")
                .defaultSuccessUrl("/")
                .and()
            .logout()
                .logoutSuccessUrl("/login");
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/static/**");
    }

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

}

此外，在 `pom.xml` 文件中添加以下依赖项，确保Spring Security正常工作：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-test</artifactId>
    <scope>test</scope>
</dependency>