在配置Spring Security中，可能会出现AntMatcher与表单登录冲突的问题。此时需要在AntMatcher中添加.excludePathPatterns()方法来排除表单登录的路径。

示例代码：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/resources/**").permitAll()
                .antMatchers("/login**").permitAll()
                .antMatchers("/api/**").hasRole("ADMIN")
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/login")
                .usernameParameter("username")
                .passwordParameter("password")
                .defaultSuccessUrl("/dashboard")
                .permitAll()
                .and()
                .logout()
                .logoutUrl("/logout")
                .logoutSuccessUrl("/login")
                .permitAll();

        http.csrf().disable();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("user")
                .password("{noop}password")
                .roles("USER")
                .and()
                .withUser("admin")
                .password("{noop}password")
                .roles("ADMIN");
    }

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

在代码中，可以使用.excludePathPatterns()方法 来排除表单登录的请求路径，示例如下：

@Override
public void configure(WebSecurity web) throws Exception {
    web.ignoring()
            .antMatchers("/resources/**", "/static/**", "/css/**", "/js/**", "/images/**")
            .and()
            .ignoring()
            .antMatchers("/login", "/login**", "/login*", "/auth/**", "/login/login*")
            .and()
            .ignoring()
            .antMatchers("/api/**");
}