“Ajax请求后台，后台两次session不一致”问题解决

    $scope.firstnext = function() {
        $http({
            method: "get",
            url: 'http://localhost:8083/contrastcode?verification=' + $scope.identycode,
            headers: {},
            withCredentials: true //!跨域带cookies
        }).then(function(req) {
            $log.log(req.data)
            if(req.data.valid == true){
                 //do somethings
            }
        })
    }

@Configuration
public class CustomCORSConfiguration {
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        corsConfiguration.setAllowCredentials(true);
        return corsConfiguration;
    }

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }
}