Nginx location 和 proxy_pass路径配置问题小结

upstream test1{
server 127.0.0.1:8000;
}
upstream test2{
server 127.0.0.1:8000;
}
server{
	server_name  test.com;
	listen 80;
        access_log /usr/local/openresty/nginx/logs/test.com_access.log latest;
        error_log  /usr/local/openresty/nginx/logs/test.com.log error;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_connect_timeout   3s;
        proxy_read_timeout 120s;
        proxy_send_timeout 120s;
        proxy_next_upstream error timeout invalid_header Http_404 http_502 http_504 http_500;
	
        location /user/ {
			proxy_set_header Connection "";
        	proxy_http_version 1.1;
			proxy_pass http://test1/;
		}
        location / {
                proxy_set_header Connection "";
                proxy_http_version 1.1;
                proxy_pass http://test2/;
        }
}

#!/usr/bin/env python

import Simplehttpserver
import SocketServer

PORT = 8000

class GetHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
    def do_GET(self):
        print(self.headers)
        self.send_response(200, "")
    def do_POST(self):
        print(self.headers)
        content_length = self.headers.getheaders('content-length')
        length = int(content_length[0]) if content_length else 0
        print(self.rfile.read(length))
        self.send_response(200, "")

Handler = GetHandler
httpd = SocketServer.tcpServer(("", PORT), Handler)
httpd.serve_forever()

 location /user/ {
			proxy_set_header Connection "";
        	proxy_http_version 1.1;
			proxy_pass http://test1/;
		}

Host: test1
Content-Length: 0
User-Agent: PostmanRuntime/7.26.8
Accept: **

Postman-Token: e33D0a2c-1965-4152-b87c-94fca50f2899

Accept-Encoding: gzip, deflate, br

127.0.0.1 - - [10/Apr/2021 16:57:18] "POST /user/test.html HTTP/1.1" 200 -

小结论： proxy_pass 地址不加了 / 的话， 请求 test.com/user/test.html 实际请求是 http://test1/user/test.html
2.3、测试三 location
不加末尾 / 且 proxy_pass 不加 末尾 /
nginx配置如下


 location /user {
			proxy_set_header Connection "";
        	proxy_http_version 1.1;
			proxy_pass http://test1;
		}

请求url
test.com/user/test.html
后端内容
打印的内容：

Host: test1

Content-Length: 0

User-Agent: PostmanRuntime/7.26.8

Accept: **

Postman-Token: d0f4b83f-6482-41ba-8a01-c059eececc2d

Accept-Encoding: gzip, deflate, br
127.0.0.1 - - [10/Apr/2021 17:00:21] "POST //test.html HTTP/1.1" 200 -

请求 test.com/user/test.html 实际请求是 http://test1//test.html
2.5、location 末尾
有 / proxy_pass 末尾其他有路径,且末尾加 /
nginx配置如下


   location /user/ {
			proxy_set_header Connection "";
        	proxy_http_version 1.1;
			proxy_pass http://test1/haha/;
		}

请求url
test.com/user/test.html
后端内容
打印的内容：

Host: test1

Content-Length: 0

User-Agent: PostmanRuntime/7.26.8

Accept: **

Postman-Token: 32fb2a50-1e7c-4131-9804-1828e21ca841

Accept-Encoding: gzip, deflate, br
127.0.0.1 - - [10/Apr/2021 17:05:03] "POST /hahatest.html HTTP/1.1" 200 -

请求 test.com/user/test.html 实际请求是 http://test1/hahatest.html
三、总结





    

        

        
    
    

        

            
序号
            
访问URL
            
location配置
            
proxy_pass配置
            
后端接收的请求
            
备注
        
    
    

        

            
1
            
test.com/user/test.html
            
/user/
            
http://test1/
            
/test.html
            

        
        

            
2
            
test.com/user/test.html
            
/user/
            
http://test1
            
/user/test.html
            

        
        

            
3
            
test.com/user/test.html
            
/user
            
http://test1
            
/user/test.html
            

        
        

            
4
            
test.com/user/test.html
            
/user
            
http://test1/
            
//test.html
            

        
        

            
5
            
test.com/user/test.html
            
/user/
            
http://test1/haha/
            
/haha/test.html
            

        
        

            
6
            
test.com/user/test.html
            
/user/
            
http://test1/haha
            
/hahatest.html
        
    



注意上表格中的后端是指 python 脚本对应的WEB服务。

在日常的web网站部署中，经常会用到 nginx的 proxy_pass 反向代理，有一个配置需要弄清楚：配置 proxy_pass 时，

    
当在后面的 upstram_name 后面出现了 /，相当于是绝对根路径，则 nginx 不会把 location 中匹配的路径部分代理走;
    
如果没有 /，则会把匹配的路径部分也给代理走。

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