UsernamePasswordAuthenticationToken cannot be cast to JWTToken

Hi, I followed your code to implement JWT based authentication. However I got the following error for the line "JWTToken jwtToken = (JWTToken) authentication" in JWTAuthenticationProvider:

java.lang.ClassCastException: org.springframework.security.authentication.UsernamePasswordAuthenticationToken cannot be cast to org.mdacc.rists.ristore.ws.security.jwt.JWTToken

My detailed code can be found here

JWTAuthenticationFilter is added my web security config in Spring Boot:

@Configuration
@EnableWebSecurity
@PropertySource(value = { "classpath:/config/application.properties" })
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
   @Autowired
    private RestAuthenticationSuccessHandler authenticationSuccessHandler;
    @Autowired
    private RestAuthenticationEntryPoint restAuthenticationEntryPoint;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http

            .httpBasic()
            .and()
            .addFilterBefore(new CORSFilter(), ChannelProcessingFilter.class)
            .addFilterAfter(new JWTAuthenticationFilter(authenticationManagerBean()),
                    AnonymousAuthenticationFilter.class)
            .csrf().disable()
            .sessionManagement().sessionCreationPolicy(
                    SessionCreationPolicy.STATELESS)
            .and()
            .exceptionHandling()
            .authenticationEntryPoint(restAuthenticationEntryPoint)
            .and()
            .authorizeRequests()
                .antMatchers("/login").permitAll()
                .antMatchers("/ristore/**").authenticated()
                .anyRequest().authenticated()
                .and()

            .formLogin()
                .successHandler(authenticationSuccessHandler)
                .failureHandler(new SimpleUrlAuthenticationFailureHandler());
    }

    @Configuration
    protected static class AuthenticationConfiguration extends
            GlobalAuthenticationConfigurerAdapter {

        @Override
        public void init(AuthenticationManagerBuilder auth) throws Exception { 
            //omitting LDAP config   
            auth.authenticationProvider(new JWTAuthenticationProvider());
        }
    }
}

I got this error when I submit the login form created with AngularJS. Post request with user credentials to "http://localhost:8080/login" ends up with 505 (Internal Server Error). Why am I getting this error?

tekbird / springjwt

UsernamePasswordAuthenticationToken cannot be cast to JWTToken #1