我得到了一个响应，我将其转换为Pojo类，其中包含一个Object类型的字段。现在，当我试图将Object类型转换为另一个Pojo类时，它会抛出错误：

java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to SecondClass

编码：

FirstClassResponse firstClassResponse = (FirstClassResponse) convertJSONToObject(firstClassResponseJson, FirstClassResponse.class);

//jsonToObject method 
public static Object convertJSONToObject(String jsonRequest, Class objectClassType) throws Exception {
    Object object = gson.fromJson(jsonRequest, objectClassType);
    return object;
}

在这里，firsClass对象在打印时给出以下结果：

FirstClassResponse [modifiedResponse=null, response={id=123, username=abc, balance=0.0, currencycode=EUR, created=2021-03-30 16:31:54, agent_balance=0.0, sessionid=123}]

现在，错误发生在以下行中：

SecondClassResponse modifiedResponse = (SecondClassResponse) firstClassResponse.getResponse();
java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to SecondClassResponse

我正在共享第一类响应和第二类响应的POJO：

public class FirstClassResponse{

    private SecondClassResponse modifiedResponse;

    private Object response;
    //getter, setter 
}

public class SecondClassResponse{

    private String id;
    private String username;
    private double balance;
    private String currencycode;
    private String created;
    private double agent_balance;
    private String sessionid;
    //getter, setter

}