Auth com AngularJS e Java

gistfile1.java

Filtro JAVA

  @Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		getToken((HttpServletRequest) request);
		chain.doFilter(request, response);
	}
	
	private String getToken(HttpServletRequest httpRequest) throws ServletException {
    String token = null;
    final String authorizationHeader = httpRequest.getHeader("authorization");
    if (authorizationHeader == null) {
      throw new ServletException("Unauthorized: No Authorization header was found");
  }
  
  E esse aqui web.xml onde eu declaro o filtro e o CORS
  
  <filter>
    <filter-name>FiltroDaAplicacao</filter-name>
    <filter-class>br.com.superacao.util.FiltroDaAplicacao</filter-class>
  </filter>
  <filter-mapping>
    <filter-name>FiltroDaAplicacao</filter-name>
    <url-pattern>/rest/*</url-pattern>
  </filter-mapping>
  
  <filter>
    <filter-name>CorsFilter</filter-name>
    <filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
    <init-param>
      <param-name>cors.allowed.origins</param-name>
      <param-value>*</param-value>
    </init-param>
    <init-param>
      <param-name>cors.allowed.methods</param-name>
      <param-value>GET,POST,HEAD,OPTIONS,PUT</param-value>
    </init-param>
    <init-param>
      <param-name>cors.allowed.headers</param-name>
      <param-value>Content-Type,X-Requested-With,accept,Origin,Access-Control-Request-Method,Access-Control-Request-Headers,Authorization
			</param-value>
    </init-param>
    <init-param>
      <param-name>cors.exposed.headers</param-name>
      <param-value>Access-Control-Allow-Origin,Access-Control-Allow-Credentials,Authorization
			</param-value>
    </init-param>
    <init-param>
      <param-name>cors.support.credentials</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>cors.preflight.maxage</param-name>
      <param-value>10</param-value>
    </init-param>
  </filter>