nginx中break和last的區別

一、環境准備

資源文件創建

mkdir -p /opt/tmp/wqy/test/aaa
mkdir -p /opt/tmp/wqy/test/bbb
echo "aaa" >> /opt/tmp/wqy/test/aaa/index.html
echo "bbb" >> /opt/tmp/wqy/test/bbb/index.html

二、測試過程

2.1、初始配置時

nginx配置

server {
    listen 80;
    server_name wqy.test.com;
    access_log logs/wqy-test-com/access.log;
    location ^~ /aaa {
        root /opt/tmp/wqy/test;
    }
    location ^~ /bbb {
        return 200 "hello world\n";
    }
}

測試結果

#curl -s http://wqy.test.com/aaa/index.html -x 127.0.0.1:80
aaa
#curl -s http://wqy.test.com/bbb/index.html -x 127.0.0.1:80
hello world

2.2、配置rewrite last時

nginx配置

server {
    listen 80;
    server_name wqy.test.com;
    access_log logs/wqy-test-com/access.log;
    location ^~ /aaa {
        rewrite ^/aaa/(.*) /bbb/$1 last;
        root /opt/tmp/wqy/test;
    }
    location ^~ /bbb {
        return 200 "hello world\n";
    }
}

測試結果

#curl -s http://wqy.test.com/aaa/index.html -x 127.0.0.1:80
hello world
#curl -s http://wqy.test.com/bbb/index.html -x 127.0.0.1:80
hello world

url由重寫前的http://wqy.test.com/aaa/index.html變為http://wqy.test.com/bbb/index.html，重新進行location匹配后，匹配到第二個location條件，所以請求url得到的響應是hello wold

測試結論

配置rewrite last時，請求跳出當前location，進入server塊，重新進行location匹配，超過10次匹配不到報500錯誤。客戶端的url不變

2.3、配置rewrite break時

nginx配置

server {
    listen 80;
    server_name wqy.test.com;
    access_log logs/wqy-test-com/access.log;
    location ^~ /aaa {
        rewrite ^/aaa/(.*) /bbb/$1 break;
        root /opt/tmp/wqy/test;
    }
    location ^~ /bbb {
        return 200 "hello world\n";
    }
}

測試結果

#curl -s http://wqy.test.com/aaa/index.html -x 127.0.0.1:80
bbb
#curl -s http://wqy.test.com/bbb/index.html -x 127.0.0.1:80
hello world

url由重寫前的http://wqy.test.com/aaa/index.html變為http://wqy.test.com/bbb/index.html，nginx按照重寫后的url進行資源匹配，匹配到的資源文件是/opt/tmp/wqy/test/bbb/index.html，所以請求url得到的響應就是/opt/tmp/wqy/test/bbb/index.html文件中的內容：bbb。

測試結論

配置rewrite break時，請求不會跳出當前location，但資源匹配會按照重寫后的url進行，如果location里面配置的是proxy_pass到后端，后端服務器收到的請求url也會是重寫后的url。客戶端的url不變。