nginx处理跨域 当status_code 不等于200时不添加头部

Question

我的nginx配置如下，我发现在status_code 200的时候会返回add_header
如果是其他状态码就不会返回，请问是我哪里配置有问题么？

server{
    listen  80;
    server_name ppt.com;
    root    /public;
    index index.html index.php;

    location ~ \.php$ {
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }
        
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS,PUT,DELETE';
    add_header Access-Control-Allow-Headers '*';
 
    if ($request_method = 'OPTIONS') {
        return 204;
    }

    location / { 
        try_files $uri $uri/ /index.php?$query_string;
    } 

    access_log  ./nginx/ppt.server.log;
    error_log  ./nginx/ppt.server.error.log;
}

Answer 1

add_header Access-Control-Allow-Origin * always;
    add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS,PUT,DELETE' always;
    add_header Access-Control-Allow-Headers '*' always;

在add_header最后添加 always