nginx 配置根据请求头分发问题

[exqibao]

根据请求头分发

loc: /aa ==> http://127.0.0.1:28080/aa

pro: /aa ==> http://127.0.0.1:8011/api/

其它: /aa ==> http://127.0.0.1:8022/api/

大佬们，原来只有 loc 和其它一切正常，加上 pro 就不行了，如何配置可以实现这个效果吗？似乎 if 里面 proxy_pass 不能有/api/地址

	location /aa {
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection "upgrade";
		proxy_set_header X-real-ip $remote_addr;
		proxy_set_header X-Forwarded-For $remote_addr;
		if ($http_environment_name = "loc" ) {
			proxy_pass http://127.0.0.1:28080;
			break;
		}
		if ($http_environment_name = "pro" ) {
			proxy_pass http://127.0.0.1:8011/api/;
			break;
		}
		proxy_pass http://127.0.0.1:8022/api/;
	}

[Hopetree]

以前写过一个判断是否移动端的，可以参考我这个写法：

[smallparking]

使用 map ,测试了一下没问题
```
# 根据请求头 environment_name 映射目标地址
map $http_environment_name $backend {
default http://127.0.0.1:8022/api/; # 默认地址
loc http://127.0.0.1:28080; # loc 的地址
pro http://127.0.0.1:8011/api/; # pro 的地址
}

server {
listen 80;

location /aa {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;

# 动态选择后端
proxy_pass $backend;
}
}
```

```
~ » cat test_njet.sh 130 ↵ xtcc@xtcc-b560m-power
curl -H "environment-name: " http://127.0.0.1:8089/aa
curl -H "environment-name: ssss" http://127.0.0.1:8089/aa
curl -H "environment-name: loc" http://127.0.0.1:8089/aa
curl -H "environment-name: pro" http://127.0.0.1:8089/aa
```
```
2025/01/13 17:02:01 [error] 238783#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: , request: "GET /aa HTTP/1.1", upstream: "http://127.0.0.1:8022/api/", host: "127.0.0.1:8089"
2025/01/13 17:02:01 [error] 238784#0: *3 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: , request: "GET /aa HTTP/1.1", upstream: "http://127.0.0.1:8022/api/", host: "127.0.0.1:8089"
2025/01/13 17:02:01 [error] 238785#0: *5 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: , request: "GET /aa HTTP/1.1", upstream: "http://127.0.0.1:28080/aa", host: "127.0.0.1:8089"
2025/01/13 17:02:01 [error] 238786#0: *7 connect() failed (111: Connection refused) while connecting to upstream, client: 127.0.0.1, server: , request: "GET /aa HTTP/1.1", upstream: "http://127.0.0.1:8011/api/", host: "127.0.0.1:8089"

```

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[guanzhangzhang]

写 map 设置变量值即可

[5200]

要不你统一一下，
http://127.0.0.1:28080
http://127.0.0.1:8011/api/
http://127.0.0.1:8022/api/
在 api 后面去掉 /，

不然你替换后的路径看着有问题，会有两个 //

api//test 这样，可能有些语言会兼容，但是有些语言就直接报错。

[weilai99]

proxy_pass api 后边不要加左斜杠，否则转发时会将 location 里的 /aa 去掉，实际转发到了 api/*** 而非/api/aa/***

[exqibao]

@smallparking @guanzhangzhang 还是不太行，使用 map 配置 pro http://127.0.0.1:8011/api/;这种情况访问不通，只有 url 没/api/的是可以正常访问，还是统一一下/api 好些

[exqibao]

发现 rewrite 可以解决
location /aa {
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header X-real-ip $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
if ($http_environment_name = "loc" ) {
proxy_pass http://127.0.0.1:28080;
break;
}
if ($http_environment_name = "pro" ) {
rewrite ^/aa /(.*)$ /api/$1 break;
proxy_pass http://127.0.0.1:8011;
break;
}
proxy_pass http://127.0.0.1:8022/api/;
}

[exqibao]

应该 map 也是可以的，发现 pro 服务有点问题，没重新试，当前用 rewrite