From d058d999b87e6a44dbb4ddf6432f03d4238b4679 Mon Sep 17 00:00:00 2001
From: lrita <lrita@163.com>
Date: Fri, 18 Mar 2022 17:58:29 +0800
Subject: [PATCH] fix the issue of accesslog closing the default writer
 os.Stdout by SetOutput() method

---
 middleware/accesslog/accesslog.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/middleware/accesslog/accesslog.go b/middleware/accesslog/accesslog.go
index 3a4ac4ae..1320718c 100644
--- a/middleware/accesslog/accesslog.go
+++ b/middleware/accesslog/accesslog.go
@@ -498,6 +498,10 @@ func (ac *AccessLog) setOutput(reset bool, writers ...io.Writer) {
 		}
 		for _, closer := range closers {
 			if closer != nil {
+				// cannot close os.Stdout/os.Stderr
+				if closer == os.Stdout || closer == os.Stderr {
+					continue
+				}
 				closer.Close()
 			}
 		}