nginx中break和last的区别

Bertha 。 2021-06-22 15:38 334阅读 0赞

[https://www.cnblogs.com/crazymagic/p/11034300.html][https_www.cnblogs.com_crazymagic_p_11034300.html]

## 一、环境准备 ##

### 资源文件创建 ###

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、测试过程 ##

## 2.1、初始配置时 ##

**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";
        }
    }

**测试结果**

#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时 ###

**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";
        }
    }

**测试结果**

#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由重写前的`http://wqy.test.com/aaa/index.html`变为`http://wqy.test.com/bbb/index.html`，重新进行location匹配后，匹配到第二个location条件，所以请求url得到的响应是`hello wold`

**测试结论**

配置`rewrite last`时，请求跳出当前location，进入server块，重新进行location匹配，超过10次匹配不到报500错误。客户端的url不变

### 2.3、配置rewrite break时 ###

**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";
        }
    }

**测试结果**

#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由重写前的`http://wqy.test.com/aaa/index.html`变为`http://wqy.test.com/bbb/index.html`，nginx按照重写后的url进行资源匹配，匹配到的资源文件是`/opt/tmp/wqy/test/bbb/index.html`，所以请求url得到的响应就是`/opt/tmp/wqy/test/bbb/index.html`文件中的内容：`bbb`。

**测试结论**

配置`rewrite break`时，请求不会跳出当前location，但资源匹配会按照重写后的url进行，如果location里面配置的是proxy\_pass到后端，后端服务器收到的请求url也会是重写后的url。客户端的url不变。

[https_www.cnblogs.com_crazymagic_p_11034300.html]: https://www.cnblogs.com/crazymagic/p/11034300.html