通过apache,和nginx模块去除html中的空格和tab

2022-07-12 22:20:26

最近一个项目中，合作方要求去除html中的空格，不想改代码，所以百度了一下通过apache,和nginx模块去除html中的空格和tab的方案，下面记录下来：

一、nginx

nginx可以通过mod_strip模块来实现该功能

1. mod_strip安装：

# cd /usr/local/src/
# wget http://wiki.nginx.org/images/6/63/Mod_strip-0.1.tar.gz
# tar -xzvf Mod_strip-0.1.tar.gz
# cd nginx-1.4.2 //提前解压好的nginx
# ./configure --prefix=/usr/local/nginx-1.4.2 --add-module=../mod_strip
# make
# make install
2. mod_strip简单用法：

location / {
strip on;
}
strip指令：

语法: strip on|off
默认: off
可用配置段: main, http, server, location
所有响应给用户的MIME类型为text/html将会使用该模块
二、apache
apche可以通过mod_pagespeed http://www.modpagespeed.com/ 来实现,我的服务器是ubuntu
1、下载mode_pagespeed

wget https://dl-ssl.google.com/dl/linux/direct/mod-pagespeed-beta_current_i386.deb
2、安装
dpkg -i mod-pagespeed*
执行完毕后会提示重启
3、修改配置文件
/etc/apache2/mods-available/pagespeed.conf，下面我着重介绍一下ModPagespeedEnableFilters这个是启用的过滤器，collapse_whitespace,remove_comments分别为替换空白字符和删除注释，其它参数请见mod_pagespeed官网

# Turn on mod_pagespeed. To completely disable mod_pagespeed, you

# can set this to "off".

ModPagespeed on

# We want VHosts to inherit global configuration.

# If this is not included, they'll be independent (except for inherently

# global options), at least for backwards compatibility.

ModPagespeedInheritVHostConfig on

# Direct Apache to send all HTML output to the mod_pagespeed

# output handler.

AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER text/html

AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER application/javascript

AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER text/css

# If you want mod_pagespeed process XHTML as well, please uncomment this

# line.

#AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER application/xhtml+xml

# The ModPagespeedFileCachePath directory must exist and be writable

# by the apache user (as specified by the User directive).

ModPagespeedFileCachePath "/var/cache/mod_pagespeed/"

# LogDir is needed to store various logs, including the statistics log

# required for the console.

ModPagespeedLogDir "/var/log/pagespeed"

# The locations of SSL Certificates is distribution-dependent.

ModPagespeedSslCertDirectory "/etc/ssl/certs"

# If you want, you can use one or more memcached servers as the store for

# the mod_pagespeed cache.

# ModPagespeedMemcachedServers localhost:11211

# A portion of the cache can be kept in memory only, to reduce load on disk

# (or memcached) from many small files.

# ModPagespeedCreateSharedMemoryMetadataCache "/var/cache/mod_pagespeed/" 51200

# Override the mod_pagespeed 'rewrite level'. The default level

# "CoreFilters" uses a set of rewrite filters that are generally

# safe for most web pages. Most sites should not need to change

# this value and can instead fine-tune the configuration using the

# ModPagespeedDisableFilters and ModPagespeedEnableFilters

# directives, below. Valid values for ModPagespeedRewriteLevel are

# PassThrough, CoreFilters and TestingCoreFilters.

# ModPagespeedRewriteLevel PassThrough

# Explicitly disables specific filters. This is useful in

# conjuction with ModPagespeedRewriteLevel. For instance, if one

# of the filters in the CoreFilters needs to be disabled for a

# site, that filter can be added to

# ModPagespeedDisableFilters. This directive contains a

# comma-separated list of filter names, and can be repeated.

#ModPagespeedDisableFilters remove_comments,collapse_whitespace

# Explicitly enables specific filters. This is useful in

# conjuction with ModPagespeedRewriteLevel. For instance, filters

# not included in the CoreFilters may be enabled using this

# directive. This directive contains a comma-separated list of

# filter names, and can be repeated.

#ModPagespeedEnableFilters rewrite_javascript,rewrite_css

ModPagespeedEnableFilters collapse_whitespace,elide_attributes,remove_comments

# Explicitly forbids the enabling of specific filters using either query

# parameters or request headers. This is useful, for example, when we do

# not want the filter to run for performance or security reasons. This

# directive contains a comma-separated list of filter names, and can be

# repeated.

# ModPagespeedForbidFilters rewrite_images

# How long mod_pagespeed will wait to return an optimized resource

# (per flush window) on first request before giving up and returning the

# original (unoptimized) resource. After this deadline is exceeded the

# original resource is returned and the optimization is pushed to the

# background to be completed for future requests. Increasing this value will

# increase page latency, but might reduce load time (for instance on a

# bandwidth-constrained link where it's worth waiting for image

# compression to complete). If the value is less than or equal to zero

# mod_pagespeed will wait indefinitely for the rewrite to complete before

# returning.

# ModPagespeedRewriteDeadlinePerFlushMs 10

# ModPagespeedDomain

# authorizes rewriting of JS, CSS, and Image files found in this

# domain. By default only resources with the same origin as the

# HTML file are rewritten. For example:

# ModPagespeedDomain cdn.myhost.com

# This will allow resources found on http://cdn.myhost.com to be

# rewritten in addition to those in the same domain as the HTML.

# Other domain-related directives (like ModPagespeedMapRewriteDomain

# and ModPagespeedMapOriginDomain) can also authorize domains.

# Wildcards (* and ?) are allowed in the domain specification. Be

# careful when using them as if you rewrite domains that do not

# send you traffic, then the site receiving the traffic will not

# know how to serve the rewritten content.

# Other defaults (cache sizes and thresholds):

# ModPagespeedFileCacheSizeKb 102400

# ModPagespeedFileCacheCleanIntervalMs 3600000

# ModPagespeedLRUCacheKbPerProcess 1024

# ModPagespeedLRUCacheByteLimit 16384

# ModPagespeedCssFlattenMaxBytes 2048

# ModPagespeedCssInlineMaxBytes 2048

# ModPagespeedCssImageInlineMaxBytes 0

# ModPagespeedImageInlineMaxBytes 3072

# ModPagespeedJsInlineMaxBytes 2048

# ModPagespeedCssOutlineMinBytes 3000

# ModPagespeedJsOutlineMinBytes 3000

# ModPagespeedMaxCombinedCssBytes -1

# ModPagespeedMaxCombinedJsBytes 92160

# Limit the number of inodes in the file cache. Set to 0 for no limit.

# The default value if this paramater is not specified is 0 (no limit).

ModPagespeedFileCacheInodeLimit 500000

# Bound the number of images that can be rewritten at any one time; this

# avoids overloading the CPU. Set this to 0 to remove the bound.

# ModPagespeedImageMaxRewritesAtOnce 8

# You can also customize the number of threads per Apache process

# mod_pagespeed will use to do resource optimization. Plain

# "rewrite threads" are used to do short, latency-sensitive work,

# while "expensive rewrite threads" are used for actual optimization

# work that's more computationally expensive. If you live these unset,

# or use values <= 0 the defaults will be used, which is 1 for both

# values when using non-threaded MPMs (e.g. prefork) and 4 for both

# on threaded MPMs (e.g. worker and event). These settings can only

# be changed globally, and not per virtual host.

# ModPagespeedNumRewriteThreads 4

# ModPagespeedNumExpensiveRewriteThreads 4

# Randomly drop rewrites (*) to increase the chance of optimizing

# frequently fetched resources and decrease the chance of optimizing

# infrequently fetched resources. This can reduce CPU load. The default

# value of this parameter is 0 (no drops). 90 means that a resourced

# fetched once has a 10% probability of being optimized while a resource

# that is fetched 50 times has a 99.65% probability of being optimized.

# (*) Currently only CSS files and images are randomly dropped. Images

# within CSS files are not randomly dropped.

# ModPagespeedRewriteRandomDropPercentage 90

# Many filters modify the URLs of resources in HTML files. This is typically

# harmless but pages whose Javascript expects to read or modify the original

# URLs may break. The following parameters prevent filters from modifying

# URLs of their respective types.

# ModPagespeedJsPreserveURLs on

# ModPagespeedImagePreserveURLs on

# ModPagespeedCssPreserveURLs on

# Settings for image optimization:

# Lossy image recompression quality (0 to 100, -1 just strips metadata):

# ModPagespeedImageRecompressionQuality 85

# Jpeg recompression quality (0 to 100, -1 uses ImageRecompressionQuality):

# ModPagespeedJpegRecompressionQuality -1

# ModPagespeedJpegRecompressionQualityForSmallScreens 70

# WebP recompression quality (0 to 100, -1 uses ImageRecompressionQuality):

# ModPagespeedImageWebpRecompressionQuality 80

# ModPagespeedImageWebpRecompressionQualityForSmallScreens 70

# Timeout for conversions to WebP format, in

# milliseconds. Negative values mean no timeout is applied. The

# default value is -1:

# ModPagespeedImageWebpTimeoutMs 5000

# Percent of original image size below which optimized images are retained:

# ModPagespeedImageLimitOptimizedPercent 100

# Percent of original image area below which image resizing will be

# attempted:

# ModPagespeedImageLimitResizeAreaPercent 100

# Settings for inline preview images

# Setting this to n restricts preview images to the first n images found on

# the page. The default of -1 means preview images can appear anywhere on

# the page (if those images appear above the fold).

# ModPagespeedMaxInlinedPreviewImagesIndex -1

# Sets the minimum size in bytes of any image for which a low quality image

# is generated.

# ModPagespeedMinImageSizeLowResolutionBytes 3072

# The maximum URL size is generally limited to about 2k characters

# due to IE: See http://support.microsoft.com/kb/208427/EN-US.

# Apache servers by default impose a further limitation of about

# 250 characters per URL segment (text between slashes).

# mod_pagespeed circumvents this limitation, but if you employ

# proxy servers in your path you may need to re-impose it by

# overriding the setting here. The default setting is 1024

# characters.

# ModPagespeedMaxSegmentLength 250

# Uncomment this if you want to prevent mod_pagespeed from combining files

# (e.g. CSS files) across paths

# ModPagespeedCombineAcrossPaths off

# Renaming JavaScript URLs can sometimes break them. With this

# option enabled, mod_pagespeed uses a simple heuristic to decide

# not to rename JavaScript that it thinks is introspective.

# You can uncomment this to let mod_pagespeed rename all JS files.

# ModPagespeedAvoidRenamingIntrospectiveJavascript off

# Certain common JavaScript libraries are available from Google, which acts

# as a CDN and allows you to benefit from browser caching if a new visitor

# to your site previously visited another site that makes use of the same

# libraries as you do. Enable the following filter to turn on this feature.

# ModPagespeedEnableFilters canonicalize_javascript_libraries

# The following line configures a library that is recognized by

# canonicalize_javascript_libraries. This will have no effect unless you

# enable this filter (generally by uncommenting the last line in the

# previous stanza). The format is:

# ModPagespeedLibrary bytes md5 canonical_url

# Where bytes and md5 are with respect to the *minified* JS; use

# js_minify --print_size_and_hash to obtain this data.

# Note that we can register multiple hashes for the same canonical url;

# we do this if there are versions available that have already been minified

# with more sophisticated tools.

# Additional library configuration can be found in

# pagespeed_libraries.conf included in the distribution. You should add

# new entries here, though, so that file can be automatically upgraded.

# ModPagespeedLibrary 43 1o978_K0_LNE5_ystNklf http://www.modpagespeed.com/rewrite_javascript.js

# Explicitly tell mod_pagespeed to load some resources from disk.

# This will speed up load time and update frequency.

# This should only be used for static resources which do not need

# specific headers set or other processing by Apache.

# Both URL and filesystem path should specify directories and

# filesystem path must be absolute (for now).

# ModPagespeedLoadFromFile "http://example.com/static/" "/var/www/static/"

# Enables server-side instrumentation and statistics. If this rewriter is

# enabled, then each rewritten HTML page will have instrumentation javacript

# added that sends latency beacons to /mod_pagespeed_beacon. These

# statistics can be accessed at /mod_pagespeed_statistics. You must also

# enable the mod_pagespeed_statistics and mod_pagespeed_beacon handlers

# below.

# ModPagespeedEnableFilters add_instrumentation

# The add_instrumentation filter sends a beacon after the page onload

# handler is called. The user might navigate to a new URL before this. If

# you enable the following directive, the beacon is sent as part of an

# onbeforeunload handler, for pages where navigation happens before the

# onload event.

# ModPagespeedReportUnloadTime on

# Uncomment the following line so that ModPagespeed will not cache or

# rewrite resources with Vary: in the header, e.g. Vary: User-Agent.

# Note that ModPagespeed always respects Vary: headers on html content.

# ModPagespeedRespectVary on

# Uncomment the following line if you want to disable statistics entirely.

# ModPagespeedStatistics off

# This page lets you view statistics about the mod_pagespeed module.

Order allow,deny

# You may insert other "Allow from" lines to add hosts you want to

# allow to look at generated statistics. Another possibility is

# to comment out the "Order" and "Allow" options from the config

# file, to allow any client that can reach your server to examine

# statistics. This might be appropriate in an experimental setup or

# if the Apache server is protected by a reverse proxy that will

# filter URLs in some fashion.

Allow from localhost

Allow from 127.0.0.1

SetHandler mod_pagespeed_statistics

</Location>

# Enable logging of mod_pagespeed statistics, needed for the console.

ModPagespeedStatisticsLogging on

Order allow,deny

Allow from localhost

Allow from 127.0.0.1

SetHandler pagespeed_console

</Location>

# Page /mod_pagespeed_message lets you view the latest messages from

# mod_pagespeed, regardless of log-level in your httpd.conf

# ModPagespeedMessageBufferSize is the maximum number of bytes you would

# like to dump to your /mod_pagespeed_message page at one time,

# its default value is 100k bytes.

# Set it to 0 if you want to disable this feature.

ModPagespeedMessageBufferSize 100000

Order allow,deny

Allow from localhost

Allow from 127.0.0.1

SetHandler mod_pagespeed_message

</Location>

</IfModule>

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