Fastjson determines whether the JSON string is object or list ＜ object ＞

introduction

In daily development, it is often necessary to JSON String processing , The most important thing to deal with is JSON And objects , Because for collection objects and ordinary objects ,JSON The method of converting objects is different , We need to choose different methods for corresponding conversion according to different situations , The following code is the processing method when I am not sure whether the string to be processed is a collection object or an ordinary object , I hope I can give you some reference , throw away a brick in order to get a gem

Code

{
    
    Object object = JSON.parse(jsonStr);
    if ( object instanceof JSONObject) {
    
        Object jsonObject = JSONObject.parse(jsonStr);
    } else if ( object instanceof JSONArray) {
    
        JSONArray jsonArray = JSONObject.parseArray(jsonStr);
    } else {
    
        system.out.println(" Type unknown ");
    }
}