可替换多行的nginx反代替换模块
比ngx_http_substitutions_filter_module 更强大的替换模块：replace-filter-nginx-module这家伙能替换多行文本！
下面只翻译一下，再加个安装教程，因为我自己也没弄懂怎样玩= =
1.安装此模块需要先安装sregex运行库
apt-get update;apt-get install git make gcc -y#Centos改成yum
git clone https://github.com/agentzh/sregex
make
make install
cd ..
git clone https://github.com/agentzh/replace-filter-nginx-module
wget http://nginx.org/download/nginx-1.2.6.tar.gz
tar zxvf nginx-1.2.6.tar.gz
cd nginx-1.2.6
./configure --add-module=../replace-filter-nginx-module#自行加其他编译参数
make
make install
nginx.conf的用法举例：
location /t {
default_type text/html;
echo abc;
replace_filter 'ab|abc' X;
}
location / {
# proxy_pass/fastcgi_pass/...
# caseless global substitution:
replace_filter '\d+' 'blah blah' 'ig';
replace_filter_types text/plain text/css;
}
Syntax语法：
^ 匹配起始行数
$ 匹配末尾行数
\A match only at beginning of stream
\z match only at end of stream
\b match a word boundary
\B match except at a word boundary
. match any char
\C match a single C-language char (octet)
character classes (positive)
[^ab0-9] character classes (negative)
\d match a digit character ()
\D match a non-digit character ([^0-9])
\s match a whitespace character ([ \f\n\r\t])
\S match a non-whitespace character ([^ \f\n\r\t])
\h match a horizontal whitespace character
\H match a character that isn't horizontal whitespace
\v match a vertical whitespace character
\V match a character that isn't vertical whitespace
\w match a "word" character ()
\W match a non-"word" character ([^A-Za-z0-9_])
\cK control char (example: VT)
\N match a character that isn't a newline
ab concatenation; first match a, and then b
a|b alternation; match a or b
(a) capturing parentheses
(?:a) non-capturing parantheses
a? match 1 or 0 times, greedily
a* match 0 or more times, greedily
a+ match 1 or more times, greedily
a?? match 1 or 0 times, not greedily
a*? match 0 or more times, not greedily
a+? match 1 or more times, not greedily
a{n} match exactly n times
a{n,m} match at least n but not more than m times, greedily
a{n,} match at least n times, greedily
a{n}? match exactly n times, not greedily (redundant)
a{n,m}? match at least n but not more than m times, not greedily
a{n,}? match at least n times, not greedily
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