正在尝试通过jmeter查询mongodb。我已经下载了 mongodb-driver-sync-4.2.3.jar 从maven复制到 lib 及 lib/ext 文件夹。
我的JSR223采样器代码基本上是mongo快速启动代码的复制粘贴：

import com.mongodb.ConnectionString;
import com.mongodb.MongoClientSettings;
import com.mongodb.client.MongoClient;
import com.mongodb.client.MongoClients;
import com.mongodb.client.MongoDatabase;

def connectionString = new ConnectionString("CONNECTION_STRING");
def settings = MongoClientSettings.builder()
        .applyConnectionString(connectionString)
        .build();
def mongoClient = MongoClients.create(settings);
def database = mongoClient.getDatabase("test");

但我不断收到错误消息，说导入失败：

Script2.groovy: 1: unable to resolve class com.mongodb.ConnectionString
 @ line 1, column 1.
   import com.mongodb.ConnectionString;
   ^

Script2.groovy: 2: unable to resolve class com.mongodb.MongoClientSettings
 @ line 2, column 1.
   import com.mongodb.MongoClientSettings;
   ^

2 errors

javax.script.ScriptException: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
Script2.groovy: 1: unable to resolve class com.mongodb.ConnectionString
 @ line 1, column 1.
   import com.mongodb.ConnectionString;
   ^

Script2.groovy: 2: unable to resolve class com.mongodb.MongoClientSettings
 @ line 2, column 1.
   import com.mongodb.MongoClientSettings;

我错过了什么？我该怎么做？