express + nginx 项目配置问题

express + nginx 项目，代码上线后，单独访问接口是可以的，但是在前端项目中调接口的时候就报 405 ，有大哥知道这是怎么回事吗？ nginx 配置如下：

server { lisen 80; listen 443 ssl; server_name xxx; ssl_certificate /usr/local/nginx/conf/ssl/xxx.com.pem; ssl_certificate_key /usr/local/nginx/conf/ssl/xxx.com.key; ssl_protocols TLSv1.2; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; location / { proxy_pass http://127.0.0.1:3000; proxy_http_version 1.1; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-NginX-Proxy true; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade"; proxy_set_header X-Forwarded-Proto $scheme; proxy_set_header X-Forwarded-Method $request_method; add_header 'Access-Control-Allow-Origin' '*'; add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS'; add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range'; add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range'; } } 

前端项目配置了跨域，代码如下：

import { defineConfig } from "vite"; export default defineConfig({ ... server: { open: true, proxy: { "/api": { target: nginx 中配置的 server_name ， changeOrigin: true, }, }, }, ... }); 

请各位大哥指点一下