com.alibaba.fastjson.JSONObject cannot be cast to com.alibaba.fastjson.JSONArray

This error occurs when you try to cast a JSON object to a JSON array.

For example, if you have a JSON string like this:

{
  "name": "John",
  "age": 30
}

And you try to cast it to a JSON array like this:

JSONArray jsonArray = (JSONArray) JSONObject.parse(jsonString);

You will get the error message:

java.lang.ClassCastException: com.alibaba.fastjson.JSONObject cannot be cast to com.alibaba.fastjson.JSONArray

To fix this error, you need to make sure that you are casting the JSON object to the correct type. In this case, you should cast it to a JSON object instead of a JSON array:

JSONObject jsonObject = (JSONObject) JSONObject.parse(jsonString);

Alternatively, if you are expecting a JSON array, you should make sure that your JSON string contains an array instead of an object.