看了网上说的使用createConnection()连接多个数据库，但是在express中post请求时会一直不响应，不知道该如何解决，麻烦解答一下，谢谢了～
If you don’t post the code, how can you get someone to help you solve the problem?
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If you don’t post the code, how can you get someone to help you solve the problem?