遍历json，求合计？

Question

代码如下：

[{"CountAll":30,"Zone":"A","WareHouse":"原料库"},{"CountAll":20,"Zone":"B","WareHouse":"成品库"},{"CountAll":60,"Zone":"C","WareHouse":"原料库"},{"CountAll":70,"Zone":"D","WareHouse":"成品库"},{"CountAll":20,"Zone":"F","WareHouse":"食品库"},{"CountAll":10,"Zone":"E","WareHouse":"储存库"}]

循环统计出：

不同的WareHouse（仓库），CountAll 的总计