尊龙凯时人生就是搏

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NginxÊÇÒ»¸ö¸ßÐÔÄܵÄWebЧÀÍÆ÷ºÍ·´ÏòÊðÀíЧÀÍÆ÷£¬±¾ÎĽ«ÏÈÈÝÔõÑùʹÓÃNginxÀ´´î½¨Ð§ÀÍÆ÷µÄ¿çÓò»á¼ûÉèÖúÍCORSЭÒéÖ§³Ö ¡£

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ΪÁËÊÚȨÆäËûÓòÃûµÄ»á¼û£¬ÎÒÃÇÊ×ÏÈÐèÒªÔÚNginxµÄÉèÖÃÎļþÖÐÌí¼Ó¿çÓò»á¼ûÉèÖà ¡£·­¿ªNginxµÄÉèÖÃÎļþ£¨Í¨³£ÊÇ/etc/nginx/nginx.conf£©£¬ÔÚhttp²¿·ÖÌí¼ÓÒÔÏÂÉèÖãº

http {
    ...
    
    # ÔÊÐí¿çÓò»á¼û
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Methods 'GET, POST, 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';
}

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$ sudo nginx -s reload

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http {
    ...
    
    # ÉèÖÃCORS
    map $http_origin $allowed_origin {
        default "";
        ~^https?://(www.)?example.com$ $http_origin;
        ~^https?://(www.)?example.net$ $http_origin;
    }
    
    server {
        ...
        
        location / {
            if ($allowed_origin != "") {
                add_header 'Access-Control-Allow-Origin' $allowed_origin;
                add_header 'Access-Control-Allow-Methods' 'GET, POST, 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';
            }
            
            ...
        }
    }
}

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ÉÏÊöÉèÖÃÖУ¬ÎÒÃÇʹÓÃÁËmapÖ¸ÁîÀ´½ç˵һ¸ö$allowed_origin±äÁ¿£¬ÓÃÓÚ´æ´¢ÔÊÐí¿çÓò»á¼ûµÄÓòÃû ¡£ÔÚserver¿éÖÐÉèÖÃÁËlocation /£¬²¢Í¨¹ýifÖ¸ÁîÅжÏÄ¿½ñÇëÇóȪԴµÄÓòÃûÊÇ·ñÔÚÔÊÐíÁбíÖÐ ¡£ÈôÊÇÊÇ£¬ÔòÌí¼ÓÏìÓ¦µÄCORSÍ·ÐÅÏ¢ ¡£±ðµÄ£¬ÎÒÃÇÒ²¿ÉÒÔƾ֤×Ô¼ºµÄÐèÒªÌí¼Ó¸ü¶àµÄ¹æÔò ¡£

CORSÇëÇóµÄÔ¤¼ì£¨preflight£©

ÔÚijЩÇéÐÎÏ£¬¿çÓòÇëÇóÐèÒª¾ÙÐÐÔ¤¼ì²Ù×÷ ¡£ÀýÈçʹÓÃÁË×Ô½ç˵µÄÇëÇóÍ·ÐÅÏ¢»ò·Ç¼òÆÓÇëÇó£¨ÀýÈçPUT¡¢DELETEµÈ£©Ê± ¡£Ô¤¼ìÇëÇóÊÇÔÚÏÖʵÇëÇó֮ǰ·¢Ë͵ÄÒ»ÖÖOPTIONSÇëÇó£¬ÓÃÓÚ»ñȡЧÀÍÆ÷¶ÔÏÖʵÇëÇóµÄÊÚȨ ¡£

ΪÁËÖ§³ÖÔ¤¼ìÇëÇó£¬ÎÒÃÇÖ»ÐèÒªÔÚlocation /¿éÖÐÌí¼ÓÒÔÏÂÉèÖü´¿É£º

location / {
    ...
    
    if ($request_method = 'OPTIONS') {
        add_header 'Access-Control-Allow-Origin' $allowed_origin;
        add_header 'Access-Control-Allow-Methods' 'GET, POST, 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';

        return 204;
    }
    
    ...
}

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[Nginx¹Ù·½Îĵµ](https://nginx.org/en/docs/)

[CORS¹Ù·½Îĵµ](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS)

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