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问题描述
当request json如下时
"{[]:{"page": 2, "table1":{}}}"
在AbstractObjectParser中parse(String name, boolean isReuse)方法,获取request key时会出现

class com.alibaba.fastjson.JSONArray cannot be cast to class java.lang.String
异常,如图所示原因是对于低版本的fastjson,如1.2.21,允许自动进行JSONArray to String的转换,当前使用的1.2.83版本已禁止该隐式转换。