在nginx中配置proxy_pass代理转发时，如果在proxy_pass后面的url加/，表示绝对根路径；如果没有/，表示相对路径，把匹配的路径部分也给代理走。具体实例如下

1.配置文件location带/且proxy_pass带/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service/ {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080/;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即如果访问test.htjs.net/service/xxx.html 实际访问的是后端服务http://192.168.1.51:8080/xxx.html

2.配置文件location带/且proxy_pass不带/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service/ {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}

即访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080/service/xxx.html

3.配置文件location带/且proxy_pass带二级目录和/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service/ {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080/api/;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即访问访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080/api/xxx.html

4.配置文件location带/且proxy_pass带二级目录不带/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service/ {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080/api;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即访问访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080/apixxx.html

5.location不带/且proxy_pass带二级目录不带/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080/api;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即访问访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080/api/xxx.html

6.location不带/且proxy_pass带/

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080/;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即访问访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080//xxx.html

7.location不带/且proxy_pass不带/

 

server {listen 80;server_name test.htjs.net;#通过访问service二级目录来访问后台
location /service {# http://192.168.1.51:8080后面的斜杠是一个关键，没有斜杠的话就会传递service到后端节点proxy_pass      http://192.168.1.51:8080;proxy_redirect  off;proxy_set_header Host $host;proxy_set_header X-Real-IP $remote_addr;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;}
}

即访问访问http://test.htjs.net/service/xxx.html，实际访问的是后端服务 http://192.168.1.51:8080/service/xxx.html