解决重定向页面时，https变成http问题
@Bean
public TomcatServletWebServerFactory servletContainer(){
TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory ();
factory.setUriEncoding(StandardCharsets.UTF_8);
RemoteIpValve value = new RemoteIpValve();
value.setRemoteIpHeader("X-Forwarded-For");
value.setProtocolHeader("X-Forwarded-Proto");
value.setProtocolHeaderHttpsValue("https");
factory.addEngineValves(value);
return factory;
}