apache安装deflate

apache默认没有启用deflate,deflate是一个模块，需要安装，方法如下（源自http://www.chinaz.com/server/2010/0308/108042.shtml）：

首先查看apache是否加载了mod_deflate.so模块，如果没有需要安装加载。找到并下载和当前apache版本相同的源码文件，解压缩到/home目录下，在apache安装目录下执行：

/usr/local/apache2/bin/apxs -i -c /home/httpd-2.0.63/modules/filters/mod_deflate.

会自动在 httpd.conf添加

LoadModule deflate_module modules/mod_deflate.so

添加如下设置：

<IfModule mod_deflate.c> <Location /> #Insert filter SetOutputFilter DEFLATE # Netscape 4.x has some problems… BrowserMatch ^Mozilla/4 gzip-only-text/html # Netscape 4.06-4.08 have some more problems BrowserMatch ^Mozilla/4\.0[678] no-gzip # MSIE masquerades as Netscape, but it is fine # BrowserMatch \bMSIE !no-gzip !gzip-only-text/html # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.59 # the above regex won’t work. You can use the following # workaround to get the desired effect: # BrowserMatch \bMSIE !no-gzip !gzip-only-text/html force-gzip BrowserMatch \bMSIE !no-gzip !gzip-only-text/html # Don’t compress images and other SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary SetEnvIfNoCase Request_URI .(?:pdf|doc)$ no-gzip dont-vary AddOutputFilterByType DEFLATE text/html text/plain text/xml text/css AddOutputFilterByType DEFLATE application/x-javascript # Make sure proxies don’t deliver the wrong content Header append Vary User-Agent env=!dont-vary #DeflateFilterNote ratio ratio_info #LogFormat '"%v %h %l %u %t “%r" %>s %b "%{Referer}i" "%{User-Agent}i"" (%{ratio}n)' deflate #CustomLog logs/deflate_log deflate </Location>

但是我在执行 /usr/local/apache2/bin/apxs -i -c /home/httpd-2.0.63/modules/filters/mod_deflate时报错，说zlib.h找不到，需要安装zlib:

1.到官网下载zlib，然后依次执行如下命令（针对64位系统）：

#tar -zxvf zlib-1.2.3.tar.gz

#CFLAGS=-fPIC ./configure --libdir=/usr/lib64

#make

#make install

再执行/usr/local/apache2/bin/apxs -i -c /home/httpd-2.0.63/modules/filters/mod_deflate， 安装成功。

然后重启apache,但是在 stop apache的时候报错如下：

[root@localhost bin]# ./apachectl stop
Syntax error on line 274 of /usr/local/apache2/conf/httpd.conf:
Cannot load /usr/local/apache2/modules/mod_deflate.so into server: /usr/local/apache2/modules/mod_deflate.so: undefined symbol: inflateEnd

需要在 LoadModule deflate_module modules/mod_deflate.so 的前面加载zlib.so

如下 ：

LoadFile /usr/lib/libz.so
LoadModuledeflate_module    modules/mod_deflate.so

（感谢http://blog.sina.com.cn/s/blog_53b45c4d0100hj20.html这篇文章的帮助）

[root@localhost bin]# ./apachectl stop

ok了。
[root@localhost bin]# ./apachectl start

再次刷新html页面，Response Headers里就多了一条：

Content-Encoding    gzip

至此，gzip启用成功~