Postman中的报错：
Could not get any response 错误
Could not get any response There was an error connecting to http://127.0.0.1:8888/api/private/v1/login. Why this might have happened: The server couldn't send a response: Ensure that the backend is working properly Self-signed SSL certificates are being blocked: Fix this by turning off 'SSL certificate verification' in Settings > General Proxy configured incorrectly Ensure that proxy is configured correctly in Settings > Proxy Request timeout: Change request timeout in Settings > General
原因：为打开接口文件 app.js
解决方法：
API项目中 shift+右键 打开命令行输入：node app 运行