com.alibaba.fastjson.JSONObject 转换异常：expect '' at 0, actual = 

public void handleValue(Map<String, Object> params){
    Object obj = params.get("key");
    JSONObject valobj = JSONObject.parseObject(obj.toString());
    ...
}

    将字符串转换成json对象时 JSONObject.parseObject(text) 方法报错: expect '' at 0, actual =

    解决方案：将map对象整体转成JSONObject再处理：
    JSONObject paramsObj = new JSONObject(params);
    JSONObject valobj = paramsObj.getJSONObject("key");

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