英文:
Standard Library http package logs to stdout by default, can I disable this?
问题
在使用Go语言中的内置http模块时，我注意到http.ListenAndServe()默认会将日志输出到stdout。在我的终端中，主要显示的内容是：
http: TLS handshake error from x.x.x.x:x: tls: client offered an unsupported, maximum protocol version of 301.
我理解了这个错误是什么以及造成它的原因，但事实是，我并不特别关心。
我该如何阻止http包（或ListenAndServe()）默认将日志输出到stdout？这让我的控制台变得混乱。我有95%的把握说这些日志不是我自己记录的，因为我设置的所有日志都有"INFO"、"WARNING"等前缀。
英文:
When using the built-in http module in Go, I notice that http.ListenAndServe() will make logging calls to stdout by default. The main thing showing up in my terminal is:
http: TLS handshake error from x.x.x.x:x: tls: client offered an unsupported, maximum protocol version of 301.
Now I understand what this error is and what causes it, but the fact of the matter is, I don't particularly care.
How can I stop the http package (or ListenAndServe(), whatever) from logging to stdout by default? It's clogging up my pretty console. I'm 95% certain that I'm not the one logging the messages as all of the logs I have setup have "INFO", "WARNING" etc prefixes on them.
答案1
得分: 4
它不会记录到标准输出(stdout)，而是记录到 HTTP 服务器的 ErrorLog（如果已设置），否则记录到标准日志记录器（即 log 包中非方法函数使用的日志记录器）。如果你已经有一个日志记录器，可以使用该日志记录器构建一个带有该日志记录器作为 ErrorLog 的 http.Server，然后调用 ListenAndServe 方法。否则，可以使用 log.SetOutput 来更改标准日志的输出目标。
英文:
It doesn't log to stdout, it logs to the http server's ErrorLog if it's set, and to the standard logger (the one used by the non-method functions in log) otherwise. If you have a logger already, construct a http.Server with that logger as its ErrorLog and call ListenAndServe on that. Otherwise use log.SetOutput to change the destination of the standard log.
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