这是Spring RestTemplate getForObject的一个坑。

这是服务层代码。

嗯——，按理说我UI层用List<Owner>去接没错啊。

然而错了.....

它给我返回的是List<LinkedHashMap>，变种了......

于是我这么去接：

.......

尼玛，总觉得不伦不类......

老子强迫症又犯了，你给我Map，不行，我不要，我就要Bean......

google一下：

All Jackson knows is that you want a List, but doesn't have any restriction on the type. By default Jackson deserializes a JSON object into a LinkedHashMap, so that's why you are getting the ClassCastException.

If your returned JSON is an array, one way to get it is to use an array

MyModelClass[] myModelClasses = restTemplate.postForObject(url,mvm, MyModelClass[].class);

You can always add the elements from that array to a List.

原来如此。

改下代码：

 perfect！！！！！