页面nginx配置
1,前端页面放在域名根目录,比如,http://www.xuecheng.com/ ,对应的nginx配置:- #门户
- location / {
- alias D:/Z_lhy/SpringCloud/xuecheng_online/www/xc-ui-pc-static-portal/;
- index index.html;
- }
复制代码 页面目录:

接口nginx配置
2,前端请求接口路径,在域名后面加一个目录- url : "<strong>http://www.xuecheng.com/api/auth/oauth/token</strong>",//发送请求的地址
复制代码- function login(){ var uname = $("#username").val(); var pwd = $("#password").val(); $.ajax({ url : "<strong>http://www.xuecheng.com/api/auth/oauth/token</strong>",//发送请求的地址 type: "post", dataType: "json", data : "username="+uname+"&password="+pwd+"&grant_type=password", beforeSend:function (request) { // 如果后台没有跨域处理,这个自定义 request.setRequestHeader("Authorization","Basic RG9jV2ViQXBwOjEyMzQ1Ng=="); // 禁用按钮,防止重复提交 $("#submit").attr({ disabled: "disabled" }); }, error : function() { alert("error occured!!!");//请求失败时弹出的信息 }, success : function(data) {//返回的信息展示出来 alert(JSON.stringify(data)) } }); };
复制代码 nginx 对api接口配置- location /api/ {
- add_header 'Access-Control-Allow-Origin' $http_origin;
- add_header 'Access-Control-Allow-Credentials' 'true';
- add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
- add_header 'Access-Control-Allow-Headers' 'DNT,Authorization,Accept,Origin,Keep-Alive,User-Agent,X-Mx-ReqToken,X-Data-Type,X-Auth-Token,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
- add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
- if ($request_method = 'OPTIONS') {
- add_header 'Access-Control-Max-Age' 1728000;
- add_header 'Content-Type' 'text/plain; charset=utf-8';
- add_header 'Content-Length' 0;
- return 204;
- }
- proxy_pass http://apiserver/;
- 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;
- proxy_connect_timeout 5;
- }
-
复制代码 其中的
$http_origin
$http_origin并不是nginx的内置参数,nginx支持取自定义的参数值,$http_XXX这个格式是nginx取请求中header的XXX的值的。这里取的是origin,而一般跨域请求都会将请求的来源放在origin中(浏览器会往跨域请求的header上面加origin这个header)。

这样配置的话,前端页面在域名下:www.xuecheng.com,而访问的接口则是www.xuecheng.com/api/xxx ,这样就不存在跨域问题了,
其实nginx不配置 Access-Control-Allow-Origin也没事,因为前后端在一个域下了。
注意事项
如果你前后端访问存在跨域问题,而且你需要使用cookie,后端要想获取到前端携带过来的cookie,前后端都要做配置:
前端:- var xhr = new XMLHttpRequest()
- xhr.withCredentials = true
- xhr.open('GET', 'http://localhost:8888/', true)
- xhr.send(null)
复制代码 后端:- Access-Control-Allow-Origin: http://www.abc.com(这里必须域名不能是*)
- Access-Control-Allow-Credentials: true
复制代码 完整nginx配置
- #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; #微服务网关 [b] upstream apiserver{ server [/b][b]127.0.0.1:50101[/b][b]; }[/b] server { listen 80; [b] server_name www.xuecheng.com;[/b] ssi on; ssi_silent_errors on; #charset koi8-r; #access_log logs/host.access.log main; [b] #门户 location [/b][b]/ { alias D:/Z_lhy/SpringCloud/xuecheng_online/www/xc-ui-pc-static-portal/[/b][b]; index index.html; }[/b] #location / { # root /neworiental/www/jiaofu; # index index.html; # try_files $uri /index.html; #} # proxy_pass末尾有/,请求地址:http://localhost/api/test,转发地址:http://127.0.0.1:8000/test location /api/ {
- add_header 'Access-Control-Allow-Origin' $http_origin;
- add_header 'Access-Control-Allow-Credentials' 'true';
- add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
- add_header 'Access-Control-Allow-Headers' 'DNT,Authorization,Accept,Origin,Keep-Alive,User-Agent,X-Mx-ReqToken,X-Data-Type,X-Auth-Token,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
- add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';
- if ($request_method = 'OPTIONS') {
- add_header 'Access-Control-Max-Age' 1728000;
- add_header 'Content-Type' 'text/plain; charset=utf-8';
- add_header 'Content-Length' 0;
- return 204;
- }
- proxy_pass http://apiserver/;
- 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 $scheme;
- proxy_connect_timeout 5;
- }
- location ^~ /openapi/auth/ { proxy_pass http://apiserver/auth/; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # 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; # } #}}
复制代码 参考:
正确的Nginx跨域配置:https://blog.csdn.net/envon123/article/details/83270277
跨域资源共享(CORS)安全性:https://blog.csdn.net/weixin_43964148/article/details/109352413
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