Nginx反向代理后台服务报404遇到的解决方法

访问地址：http://IP：端口/ceshi/chael/coonMouthpiece
配置后台服务反向代理的时候报：

 [31/Dec/2020:14:27:43 +0800] "POST /ceshi/chael/coonMouthpiece HTTP/1.1" 404 0 "-" "PostmanRuntime/6.4.1"

错误信息查询nginx后台日志可知：

tail -f /usr/local/nginx/logs/

错误配置如下：

  server {
        listen 80;
        server_name localhost;
location /ceshi {
    proxy_pass http://192.168.1.110:8080;
    proxy_set_header    X-Forwarded-Host    $host;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
		}
}

经多次调试，发现http://192.168.1.110:8080/地址后少加了 /，加上之后再次调用就转发成功了
正确配置：

server {
        listen 80;
        server_name localhost;
location /ceshi/ {
    proxy_pass http://192.168.1.110:8080/;
    proxy_set_header    X-Forwarded-Host    $host;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
		}
}

也可以匹配任何已 /images/ 开头的任何查询并且停止搜索。任何正则表达式将不会被测试。
IP地址后面跟channel 例如：/chael/coonMouthpiece

upstream tomcat{
    server 192.168.1.121:8083;
}
server {
        listen 8080;
        server_name localhost;
	location ^~ /channel/{
        proxy_pass http://tomcat;
    }
}

或者
        location /wu/ {
            proxy_pass http://192.168.1.110:8082/wu/;
            proxy_set_header Host $http_host;
            proxy_set_header    X-Forwarded-Host    $host;
            proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
        }

http://192.168.1.1:8081/chael/servi_restful/rest/polHandler/xaCancelT
另外一种，代理后台之后，不需要增加地址的方式

location /chael/servi_restful/ {
    proxy_pass http://192.168.1.25:8210/chael/servi_restful/;
    proxy_set_header Host $http_host;
    proxy_set_header    X-Forwarded-Host    $host;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
}

	或者
location ^~ /chael/servi_restful/ {
    proxy_pass http://192.168.1.25:8210/chael/servi_restful/;
    proxy_set_header Host $http_host;
    proxy_set_header    X-Forwarded-Host    $host;
    proxy_set_header    X-Forwarded-For     $proxy_add_x_forwarded_for;
}