如何比较Go错误 [英] How to compare Go errors

问题描述

我有一个错误值，当在控制台上打印时，它会给我Token is expired

I have an error value which when printed on console gives me Token is expired

如何将其与特定的错误值进行比较?我试过了，但是没用:

How can I compare it with a specific error value? I tried this but it did not work:

if err == errors.New("Token is expired") {
      log.Printf("Unauthorised: %s\n", err)
}

推荐答案

尝试

err.Error() == "Token is expired"

或者通过实现错误接口来创建自己的错误.

Or create your own error by implementing the error interface.

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