解决更改字段类型报错问题

例：Achievement 更改为 List< Achievement>

"stackInfo": "{\n "异常类": "com.alibaba.fastjson.JSONException",\n "异常信息": "field null expect '[', but int, pos 1, line 1, column 22",\n "实际问题第一现场": {\n "类": "com.alibaba.fastjson.parser.DefaultJSONParser",\n "方法": "parseArray",\n "代码行": 738\n }\n}",