将/tmp/400errors.log更改为要记录输出的位置

方法1 - SetEnvIf

在apache中使用SetEnvIf
将此添加到httpd.conf

# Set an environment variable for 400 series errors
SetEnvIfNoCase Response_Status "^400" LOG_400_ERRORS

# Define a custom log format that includes the error status
LogFormat "%h %l %u %t \"%r\" %>s \"%{Referer}i\" \"%{User-Agent}i\"" combined_with_status

# Use conditional logging based on the environment variable
CustomLog /tmp/400errors.log combined_with_status env=LOG_400_ERRORS

方法2 - Mod Rewrite

在apache中使用mod_rewrite，无论是在你的站点配置，还是htaccess文件中

RewriteEngine On

# Redirect 400 series errors to a custom error log
RewriteCond %{REQUEST_STATUS} ^400
RewriteRule ^ - [E=LOG_400_ERRORS]

# Define a custom log format that includes the error status
LogFormat "%h %l %u %t \"%r\" %>s \"%{Referer}i\" \"%{User-Agent}i\"" combined_with_status

# Use conditional logging based on the environment variable
CustomLog /tmp/400errors.log combined_with_status env=LOG_400_ERRORS