uni-app 访问公司内网接口跨域解决

问题介绍

最近用uni-app 开发app软件遇到接口请求跨域和第三方地图资源跨域的问题，这里就简单说一下解决方案

问题出现原因

pc端开发的时候会登录公司vpn，所以实际上访问的资源都是内网资源，但是开发手机app的时候手机是没有vpn软件登录的，所以会出现跨域访问不到等问题

解决方案

本地安装nginx做一个转发，然后用uni-app模拟调试时就可以访问内网资源了

解决步骤

本机安装nginx
修改nginx配置 (nginx.conf文件)

大致解释下下面的配置，你需要根据自己需求去修改 proxy_pass 代理地址,我下面写的是假的。
监听的是本机的8091端口,重点需要修改的是proxy_pass 地址，proxy_pass地址写的是你公司内网服务器的地址，有端口加端口没有就默认80

#user  nobody;
worker_processes  1;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen 8091;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
          proxy_pass http://272.18.7.26:8003/;  # 将请求转发到本地的8091端口
          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_set_header X-Forwarded-Proto $scheme;
        }

      location /dev {
          rewrite /dev/(.*) /$1 break;
          proxy_pass  http://272.18.7.21;  # 将请求转发到本地的8091端口
          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_set_header X-Forwarded-Proto $scheme;

        }
        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

配置修改完成后启动nginx 以管理员身份打开nginx的目录执行 nginx 回车就ok

使用

调接口的时候访问地址修改成你本机的ip:8091/dev/接口地址

例如：http://192.168.1.23:8091/dev/api/getList (/api/getList是后端接口地址)