Nginx学习笔记17rewrite之last
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1.1.1. last
last标志跟break标志的作用差不多,区别在于break标志处理之后,通常将不再匹配其它的location,即能够匹配rewrite目标地址的location中的proxy_pass等不会执行;last标志则会继续对rewrite的目标地址进行其它location的匹配,并执行其中的proxy_pass等动作。
nginx配置文件:
location / {
root html;
index index.html;
}
location ~ ^/hello/ {
proxy_pass http://tomcat101.coe2coe.me:8080;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
access_log logs/http_hello_access.log my_access_log;
}
location ~ ^/app/ {
rewrite ^/app/(.*)$ /hello/$1 last;
}
location ~ ^/app2/ {
rewrite ^/app2/(.*)$ /app/$1 last;
}
(1)访问/app/。
运行结果:
使用curl -v http://ng.coe2coe.me:8000/app/访问时,curl并未显示有任何的HTTP 301或HTTP 302的重定向操作,使用浏览器访问时,地址栏URL无任何变化。
http_error.log错误日志:
2017/07/09 20:07:35 [notice] 3817#0: *97 "^/app/(.*)$" matches "/app/", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:07:35 [notice] 3817#0: *97 rewritten data: "/hello/", args: "", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:07:35 [info] 3817#0: *97 client 192.168.197.101 closed keepalive connection
(2)访问/app2/。
运行结果:
curl -v http://ng.coe2coe.me:8000/app2/,没有重定向操作,浏览器地址栏URL无任何变化。
http_access.log和http_hello_access.log访问日志:
$cat http_access.log
[[email protected]:/opt/nginx/logs]$cat http_hello_access.log
192.168.197.101,-,09/Jul/2017:20:16:50 +0800,GET /app2/ HTTP/1.1,200,3182,-,curl/7.35.0
访问日志中只有/hello/对应的location中定义的访问日志记录了本次对/app2/的访问。
http_error.log错误日志:
[[email protected]:/opt/nginx/logs]$cat http_error.log
2017/07/09 20:16:50 [notice] 3906#0: *106 "^/app2/(.*)$" matches "/app2/", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app2/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:16:50 [notice] 3906#0: *106 rewritten data: "/app/", args: "", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app2/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:16:50 [notice] 3906#0: *106 "^/app/(.*)$" matches "/app/", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app2/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:16:50 [notice] 3906#0: *106 rewritten data: "/hello/", args: "", client: 192.168.197.101, server: ng.coe2coe.me, request: "GET /app2/ HTTP/1.1", host: "ng.coe2coe.me:8000"
2017/07/09 20:16:50 [info] 3906#0: *106 client 192.168.197.101 closed keepalive connection
本文小结:
last标志和break标志有不同点,last不会阻止对rewrite目标地址进行其它location的匹配,而break通常会阻止对其它location的匹配。二者也有相同点,即二者都不会因为rewrite而产生http 301或http302的重定向操作,浏览器地址栏的URL不会产生变化。
这个相同点,也是last、break标志跟permanent、redirect标志的一个区别。
1.1.2. 补充说明
rewrite是ngx_http_rewrite_module模块的功能,完整介绍请参考官方网站相关页面:
http://nginx.org/en/docs/http/ngx_http_rewrite_module.html
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