Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin'

在使用ajax向tomcat部署的rest服務（使用nginx做爲反向代理服務器）請求數據時返回了Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource這個異常，錯誤碼是5

>>阅读原文<<