在Web应用程序中存储硬编码域名的最佳选择

I have web application where I refer to file names with domain names. Where can I add these domain names and call them from. When I run tools like fortify to check for security issues and standards it always warns me not to keep hard coded domain names. What would be a best option like where can I store and retrieve these main domain names from web application end(Not db)?I have web application where I refer to file na