jmeter beanshell Typed variable declaration : Object constructor错误

从数据库取值和响应值做比较，使用beanshell如下：

import org.json.JSONArray;
import org.json.JSONObject;
 
 
res_str = prev.getResponseDataAsString();
JSONObject res_json_obj = new JSONObject(res_str);
JSONArray dbd_json_array = new JSONArray("${dbd}"); // 数据库转json
JSONObject dbd_json_obj = new JSONObject();
FailureMessage = "";
Failure = true;
 
res_json_obj = new JSONObject(res_json_obj.get("data").toString());
if (!res_json_obj.isNull("list")) {
    JSONArray res_json_array = new JSONArray(res_json_obj.get("list").toString());
    log.info("响应长度:" + res_json_array.length());
    log.info("数据返回长度:" + dbd_json_array.length());
 
    if (res_json_array.length() == dbd_json_array.length()) {
        for (int i = 0; i < dbd_json_array.length(); i++) {
            Message = "\n第"+i+"条记录:";
            res_json_obj = res_json_array.getJSONObject(i);
            dbd_json_obj = dbd_json_array.getJSONObject(i);
 
            System.out.println(res_json_obj);
 
            Iterator keys = dbd_json_obj.keys();
            while (keys.hasNext()) {
                String key = (String) keys.next();
                String resvalue="";
                String dbdvalue="";
 
                System.out.println("key:" + key);
                if (key.equals(null) || key.equals("")) {
                    Message += key + "不存在;";
                    FailureMessage += Message;
                    Failure = true;
                    log.info(Message);
                    break;
                    }
                    
                        
                        if(res_json_obj.has(key) && dbd_json_obj.has(key)) {
                            resvalue = res_json_obj.getString(key);
                            dbdvalue = dbd_json_obj.getString(key);
                        }else {
                            Message += key + "不存在;";
                            FailureMessage += Message;
                            Failure = true;
                            log.info(Message);
                            break;
                        }
 
                        
 
                        if (resvalue.equals(dbdvalue)) {
                            Message += key + "匹配成功;";
                            Failure = false;
                        } else {
                            Message += key + "匹配不成功,数据库值：" + dbdvalue + ",响应值:"+resvalue;
                            FailureMessage += Message;
                            Failure = true;
                            log.info(Message);
                            break;
 
                        }
 
                        log.info("value:" + res_json_obj.get(key));
                    }
                }
 
            } else {
                Message += "接口响应与数据库数据不匹配;";
                 Message += "响应数据：" + res_json_array + "|数据库查询结果：" + dbd_json_array;
                 FailureMessage += Message;
                Failure = true;
                log.info("value:" + res_json_obj.get(key));
                break;
            }
 
        } else {
            FailureMessage = "返回数据为空";
            log.info(FailureMessage);
            Failure = true;
            return;
        }

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