'y' year should be replaced with 'u'. Use 'y' for year-of-era. Prefix your date format with '8' to use the new specifier.

es后台服务关联启动时报这个错，注释掉

CreateIndexResponse createIndexResponse = restTemplate.getClient().indices().create(request, RequestOptions.DEFAULT);
相关代码request中的排序代码，暂时可以启动