如何在文件夹中创建连接（MongoDB）

Question

在我的情况下，我只想在文件夹中创建一个连接。

这是我的代码：

const urls = ['/room/*/userconfig', '/room/*/observation/latest'];
       let requests = urls.map(url => axios.get(url));

       Promise.all(requests)
           .then(res => {

               let patientDetailsArray = Object.values(res[0].data);
               let patientObservationsArray = Object.values(res[1].data);


               const mergedArray = patientDetailsArray.map(obj => {

                   const matched = patientObservationsArray.find(obs => obs.observation.patient === obj.patient);
                   axios.get(`/patient/${obj.patient}/name`)
                       .then(res => {
                           let patientName = res.data;

                           let patientObj = {
                               ...obj,
                               name: patientName,
                               id: obj.patient,
                           };
                           if (matched) {;
                               patientObj = { ...patientObj, timestamp: matched.observation.timestamp };
                           }
                           return patientObj;
                       })
                       .then(() => this.setState({ patients: [...this.state.patients, ...mergedArray] }));
               })            
           });

如果仅使用“ mongodb：// localhost：27017 / file”，则可以创建连接，但实际上我必须管理音频文件中的所有数据。

启动控制台时，错误是：

export const connectionAvatar = mongoose.createConnection(
  'mongodb://localhost:27017/file/audio', // I think mongo don't let me to create the folder audio
  options
)