From af4f967ec9ea9938ae4a0f4ab5b098679f6892fd Mon Sep 17 00:00:00 2001
From: hhs <386998068@qq.com>
Date: Mon, 18 May 2026 21:32:25 +0800
Subject: [PATCH] vault backup: 2026-05-18 21:32:25

---
 hhs/DEV/跨域问题/跨域问题.md | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/hhs/DEV/跨域问题/跨域问题.md b/hhs/DEV/跨域问题/跨域问题.md
index 7ec7909..a646363 100644
--- a/hhs/DEV/跨域问题/跨域问题.md
+++ b/hhs/DEV/跨域问题/跨域问题.md
@@ -169,9 +169,8 @@ server {
         try_files $uri $uri/ /index.html;
     }
 
-    # --- API 反代 + CORS ---
-    location /api/ {
-        # 处理预检请求
+    # --- Location 1: OPTIONS 预检请求（直接返回，不通后端）---
+    location ~ ^/api/.*$ {
         if ($request_method = 'OPTIONS') {
             add_header 'Access-Control-Allow-Origin' '$http_origin';
             add_header 'Access-Control-Allow-Methods' 'GET, POST, PUT, DELETE, OPTIONS';
@@ -179,10 +178,12 @@ server {
             add_header 'Access-Control-Max-Age' 1728000;
             add_header 'Content-Type' 'text/plain; charset=utf-8';
             add_header 'Content-Length' 0;
-            return 204;   # 直接结束预检，不走后端
+            return 204;
         }
+    }
 
-        # 真实请求，注入响应头
+    # --- Location 2: 真实请求（反向代理 + CORS 头）---
+    location /api/ {
         add_header 'Access-Control-Allow-Origin' '$http_origin' always;
         add_header 'Access-Control-Allow-Credentials' 'true' always;
         add_header 'Access-Control-Expose-Headers' 'Content-Length,Content-Range';