运行快速代码时出现 ECONNREFUSED 错误

Question

我无法运行服务器......我收到错误消息 ECONNREFUSED

如何解决此错误！

当我尝试使用不同的端口时......都给了我同样的错误！

ubuntu@ip-MyIP:~/rainmelon/projects/FindMyBuffet$ node app.js
Express server listening on port 7005

Error: connect ECONNREFUSED
    at errnoException (net.js:884:11)
    at Object.afterConnect [as oncomplete] (net.js:875:19)
    --------------------
    at Handshake.Sequence (/home/ubuntu/rainmelon/projects/FindMyBuffet/node_modules/mysql/lib/protocol/sequences/Sequence.js:15:20)
    at new Handshake (/home/ubuntu/rainmelon/projects/FindMyBuffet/node_modules/mysql/lib/protocol/sequences/Handshake.js:9:12)
    at Protocol.handshake (/home/ubuntu/rainmelon/projects/FindMyBuffet/node_modules/mysql/lib/protocol/Protocol.js:42:50)
    at Connection.connect (/home/ubuntu/rainmelon/projects/FindMyBuffet/node_modules/mysql/lib/Connection.js:73:18)
    at Object.<anonymous> (/home/ubuntu/rainmelon/projects/FindMyBuffet/app.js:15:12)
    at Module._compile (module.js:456:26)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)

Answer 1

回溯说明异常来自何处：

Error: connect ECONNREFUSED
    at errnoException (net.js:884:11)
    at Object.afterConnect [as oncomplete] (net.js:875:19)
    --------------------
    ...
    at Connection.connect (.../node_modules/mysql/lib/Connection.js:73:18)
-->                                         ^^^^^
    at Object.<anonymous> (/home/ubuntu/rainmelon/projects/FindMyBuffet/app.js:15:12)
-->                                                                     ^^^^^^^^^

所以您的应用程序无法连接到 MySQL。

这通常是由于您的 MySQL 驱动程序配置中的主机名/端口名不正确、MySQL 服务器未运行或您的 MySQL 服务器未配置为侦听 TCP 套接字。见这里。