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This article will explain in detail the introduction of Nginx regular expression and Nginx rewrite rewriting function, the content of the article is of high quality, so share it for your reference. I hope you can get something after reading this article.

1. Rewrite Jump implementation

Service agreement function module

Url resource location path

Nginx---- supports url rewriting and if condition judgment, but does not support else jumps-the loop can be executed up to 10 times, after which nginx will return 500 code errors rewrite---- uses nginx' global variables or self-set variables, combines regular expressions and flag bits to implement url rewriting and redirection

2. Rewrite uses rewrite for matching jump using if to match global variables and then jumps using location matching

1.rewrite is placed in server {}, if {}, location {} segments

two。 For domain names or parameter strings: use if global variable matching, use proxy_pass reverse proxy

3. Nginx regular expression

Common regular expression metacharacters

4. Rewrite command

Location classification

Common expressions for regular matching

5. Location priority

Sort by priority: = type ^ ~ type expression regular expression (and) type regular string match type, prefix matching universal match (/), if there is no other match, any request will match to

Location priority rules (from highest to lowest)

1. Match a specific file location = full path location ^ ~ full path location ~ * full path location ~ full path location full path location /

two。 Use directory matching to access a file location = directory location ^ ~ directory location ~ directory location ~ * directory location directory

Location /

VI. Application scenario testing

The company's old domain name www.domain.com needs to be replaced by a new domain name www.newdomain.com due to business requirements. It cannot abolish the old domain name, jump from the old domain name to the new domain name, and keep its parameters unchanged.

[root@localhost bin] # rpm- Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm get http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm warning: / var/tmp/rpm-tmp.IHyTHc: header V4 RSA/SHA1 Signature Key ID 7bd9bf62: NOKEY in preparation. # # [100%] upgrading / installing... 1:nginx-release-centos-7-0.el7.ngx # # # # [root@localhost bin] # yum install nginx-y [root@localhost ~] # mkdir / abc [root@localhost ~] # mount.cifs / / 192.168.56.1 / mntPassword for root@//192.168.254.10/linuxs: [root@localhost ~] # cd / abc/LNMP-C7/LNMP-C7/ [root@localhost LNMP-C7] # lsDiscuz_X3.4_SC_UTF8.zipmysql-boost-5.7.20.tar.gzncurses-5. 6.tar.gznginx-1.12.2.tar.gzphp-5.6.11.tar.bz2php-7.1.10.tar.bz2php-7.1.20.tar.bz2php-7.1.20.tar.gzzend-loader-php5.6-linux-x86_64_update1.tar.gz [root@localhost LNMP-C7] # tar-zxvf nginx-1.12.2.tar.gz-C / opt [root@localhost LNMP-C7] # useradd-M-s / sbin/nologin nginx [ Root@localhost LNMP-C7] # cd / opt/nginx-1.12.2/ [root@localhost nginx-1.12.2] # lsauto CHANGES.ru configure html man srcCHANGES conf contrib LICENSE README [root@localhost nginx-1.12.2] # yum install gcc gcc-c++ pcre pcre-devel make zlib-devel-y [root@localhost nginx-1.12.2] #. / configure-- prefix=/usr/local/nginx-- user=nginx-- group=nginx-- with- Http_stub_status_ module [root @ localhost nginx-1.12.2] # make & & make install [root@localhost conf] # vim nginx.conf37 server_name www.accp.com 41 access_log logs/www.accp.com/access.log main; [root@localhost conf] # yum install bind-y [root@localhost conf] # vim / etc/named.conf 13 listen-on port 53 {any;}; 21 allow-query {any;}; [root@localhost conf] # vim / etc/named.rfc1912.zones 25 zone "accp.com" IN {26 type master;27 file "accp.com.zone" 28 allow-update {none;}; 29} [root@localhost conf] # cd / var/named/ [root@localhost named] # lsdata named.ca named.localhost slavesdynamic named.empty named.loopback [root@localhost named] # cp-p named.localhost accp.com.zone [root@localhost named] # vim accp.com.zone www IN A 192.168.247.202 [root@localhost named] # systemctl start named [root@localhost named] # systemctl stop firewalld.service [root@localhost named] # setenforce 0 [root@ Localhost named] # ln-s / usr/local/nginx/sbin/nginx / usr/local/sbin/ [root@localhost named] # cd / usr/local/nginx/ [root@localhost nginx] # lsconf html logs sbin [root@localhost nginx] # cd logs/ [root@localhost logs] # mkdir www.accp.com [root@localhost logs] # lserror.log www.accp.com [root@localhost logs] # nginx [root@localhost logs] # netstat-natp | grep 80tcp 000.0. 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0. 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0. LISTEN 6

Open the win10 client, configure the dns server, and access using the domain name.

[root@localhost logs] # vim / usr/local/nginx/conf/nginx.conf location / {# Domain name Redirect'if ($host = 'www.accp.com') {' rewrite ^ / (. *) $http://www.kgc.com/$1 permanent;'} root / html; index index.html index.htm } [root@localhost logs] # vim / etc/named.rfc1912.zones zone "kgc.com" IN {type master; file "kgc.com.zone"; allow-update {none;};} [root@localhost logs] # cd / var/named/ [root@localhost named] # lsaccp.com.zone dynamic named.empty named.loopbackdata named.ca named.localhost slaves [root@localhost named] # cp-p accp.com.zone kgc.com.zone [root@localhost named] # systemctl restart named [root@localhost named] # killall-1 nginx

[root@localhost html] # vim / usr/local/nginx/conf/nginx.conf37 server_name bbs.accp.com;42 location / post {43 rewrite (. +) http://www.accp.com/bbs$1 permanent;44} [root@localhost html] # cd-/ var/named [root@localhost named] # vim accp.com.zone [root@localhost named] # cat accp.com.zone $TTL 1D @ IN SOA @ rname.invalid. (0; serial 1D; refresh 1H; retry 1W; expire 3H); minimumNS @ A 127.0.0.1bbs IN A 192.168.247.202 [root@localhost named] # killall-3 nginx [root@localhost named] # nginx [root@localhost named] # systemctl restart named

Access redirection based on client-side IP

[root@localhost named] # vim / usr/local/nginx/conf/nginx.conf42 # set the legal IP flag 43 set $rewrite true;44 # to determine whether it is legal IP and allowed IP45 if ($remote_addr = "192.168.247.139") {46 set $rewrite false 47} 48 # disallowed IP to judge, mark 49 if ($rewrite = true) {50 rewrite (. +) / maintenance.html;51} 52 # matching mark to jump site 53 location = / maintenance.html {54 root html 55} [root@localhost named] # cd / usr/local/nginx/html/ [root@localhost html] # ls50x.html index.html [root@localhost html] # vim maintenance.html [root@localhost html] # killall-3 nginx [root@localhost html] # nginx

Jump based on parameter matching-jump to home page

[root@localhost named] # vim / usr/local/nginx/conf/nginx.conf37 server_name www.accp.com;42 if ($request_uri ~ ^ / 100-(100 | 200)-(\ d +) .html $) {43 rewrite (. *) http://www.accp.com permanent;44} [root@localhost named] # vim accp.com.zone [root@localhost named] # cat accp.com.zone $TTL 1D @ IN SOA @ rname.invalid. (0; serial 1D; refresh 1H; retry 1W; expire 3H); minimumNS @ A 127.0.0.1www IN A 192.168.247.202 [root@localhost named] # systemctl restart named [root@localhost named] # killall-3 nginx [root@localhost named] # nginx

Jump based on all PHP files under the directory

[root@localhost named] # vim / usr/local/nginx/conf/nginx.conf42 location ~ * / upload/.*\ .php ${43 rewrite (. +) http://www.accp.com permanent 44} [root@localhost named] # nginx-tnginx: the configuration file / usr/local/nginx/conf/nginx.conf syntax is oknginx: configuration file / usr/local/nginx/conf/nginx.conf test is successful [root@localhost named] # killall-3 nginx [root@localhost named] # nginx

Jump based on the most common URL request-jump to the home page

[root@localhost named] # vim / usr/local/nginx/conf/nginx.conf42 location ~ * ^ / abc/123.html {43 rewrite (. +) http://www.accp.com permanent;44}

Jump based on the most common URL request-jump to the home page

[root@localhost named] # vim / usr/local/nginx/conf/nginx.conf42 location ~ * ^ / abc/123.html {43 rewrite (. +) http://www.accp.com permanent 44} [root@localhost named] # killall-3 nginx [root@localhost named] # nginx so far, you have a basic understanding of Nginx regular expressions and Nginx rewrite rewriting, but you still need to consolidate and practice the specific usage. If you want to know more about it, please pay attention to the industry information.

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