springsecurity实现拦截器的使用示例

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/login").permitAll()
            .anyRequest().authenticated()
            .and()
        .formLogin()
            .loginPage("/login")
            .defaultSuccessUrl("/")
            .permitAll()
            .and()
        .logout()
            .invalidateHttpSession(true)
            .clearAuthentication(true)
            .logoutSuccessUrl("/login?logout")
            .permitAll();
    }

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

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