數據庫 nbsp 簡單的 是個 ace 投影 存儲 mongodb uid

近期開發以MongoDB為基礎的分布式地理數據管理平臺系統，被要求做一個簡單的demo給客戶進行演示。於是筆者便打算向數據庫中存儲一部分瓦片數據，寫一個簡單的存取服務器，使用Openlayers客戶端加載瓦片進行展示。本來是個挺簡單的功能，

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Openlayers系列（一）關於地圖投影的理解