HttpSubstitution
This module can search and replace text in the nginx response. It is only available if the
--with-http_sub_module option
was specified for ./configure.
本模块可以在nginx的回应中查找和替换文本.在编译nginx时必需加上--with-http_sub_module option
例如:
location / {
sub_filter </head>
'</head><script language="javascript" src="$script"></script>';
sub_filter_once on;
}
指令
sub_filter
syntax: sub_filter text substitution
default: none
context: http, server, location
sub_filter allows replacing some text in the nginx response with some other text, independently of the source of the data. The matching is case-insensitive. Substitution text may contain variables. Only one substitution rule per location is supported.
sub_filter 允许替换源文件里的多个文本（多次替换）匹配是非常快速的。替换必须包含变量，一个location只能一个替换规则.
sub_filter_once
syntax: sub_filter_once on|off
default: sub_filter_once on
context: http, server, location
sub_filter_once off allows to search and replace all matching lines, the default is replacing only the first one.
sub_filter_once off 允许查找替换所有匹配行，默认只替换第一个.
sub_filter_types
syntax: sub_filter_types mime-type [mime-type ...]
default: sub_filter_types text/html
context: http, server, location
sub_filter_types is used to specify which content types should be checked for sub_filter. The default is only text/html.
sub_filter_types用于指定替换sub_filter的类型，默认为text/html.