报错信息

Invalid JSON input: Cannot deserialize instance of com.js.cn.ReturnData out of START_ARRAY token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of com.jas.cn.ReturnData out of START_ARRAY token

错误描述

不能够反序列化

原因分析

有可能是返回值类型不一致导致的

问题排查

经排查发现两个方法的返回值不一致
method1 接口返回list

@RequestMapping(value = "api/v1/warnLevelApi/findListByMofDivCode", method = RequestMethod.GET)
List<Map> findListByMofDivCode(@RequestParam(value = "mofDivCode") String mofDivCode){//...
}

method2 接口返回returnData

@RequestMapping(value = "api/v1/warnLevelApi/findListByMofDivCode", method = RequestMethod.GET)
ReturnData<List<Map>> findListByMofDivCode(@RequestParam(value = "mofDivCode") String mofDivCode);

解决方案

两个接口的返回类型修改一致即可

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Cannot deserialize instance of `com.jas.cn.ReturnData` out of START_ARRAY token