\u4f5c\u4e3a\u4e00\u4e2a\u8eab\u7ecf\u767e\u6218\u7684\u9762\u5411\u8c37\u6b4c\u548cGitHub\u7f16\u7a0b\u7684\u7a0b\u5e8f\u5458\uff0c\u5bf9\u5404\u79cd\u6280\u672f\u4f3c\u4e4e\u603b\u662f\u7f3a\u4e4f\u4e00\u70b9\u656c\u754f\u5fc3\u7684\u3002
\u7136\u800c\u4eca\u5929\u5728\u73a9\u4e00\u5957\u524d\u7aef\u4ee3\u7801\u7684\u65f6\u5019\uff0c\u5dee\u70b9\u5fc3\u6001\u5d29\u6389\u53ef\u8c13\u4e00\u6b21\u7f55\u89c1\u7684\u7ecf\u5386\uff0c\u8bb0\u5f55\u4e0b\u6765\u4ee5\u98e8\u8bfb\u8005\u3002<\/p>\n\n\n\n
\u56e0\u4e3a\u4f18\u79c0\u7684\u524d\u7aef\u662f\u5728\u592a\u5c11\uff08\u592a\u8d35\uff09\uff0c\u6211\u4e0d\u5f97\u4e0d\u5f00\u59cb\u4eb2\u81ea\u7814\u7a76\u524d\u7aef\u7684\u4e1c\u897f\u3002\u8c03\u7814\u4e86\u4e00\u4e0b\u70ed\u95e8\u6280\u672f\u540e\uff0c\u6211\u51b3\u5b9a\u4eceVue\u4e0b\u624b\uff0cGitHub\u4e0a\u641e\u4e86\u51e0\u5957\u4ee3\u7801\u51c6\u5907\u7167\u732b\u753b\u864e\uff0c\u8fb9\u5b66\u8fb9\u505a\u770b\u770b\u3002\u4e4b\u524d\u7684\u51e0\u4e2a\u7eaf\u524d\u7aef\u7684\u6a21\u7248\u8fd8\u633a\u987a\u5229\uff0c\u8f7b\u677e\u90fd\u8dd1\u8d77\u6765\u4e86\u3002\u6211\u4e8e\u662f\u60f3\u7740\u7ed3\u5408\u540e\u6bb5\u7684\u4e00\u8d77\u8bd5\u7740\u8dd1\u4e00\u628a\uff0c\u6700\u7ec8\u9009\u5b9a\u4e00\u5957Flask+Vue\u7684\u6a21\u677f\u3002\u7136\u800c\u590d\u5236\u7c98\u8d34\u4e00\u5806\u547d\u4ee4\u670d\u52a1\u90fd\u8d77\u6765\u4e86\uff0c\u9875\u9762\u4e5f\u51fa\u6765\u4e86\u3002\u5f53\u6211\u6f2b\u4e0d\u7ecf\u5fc3\u7684\u8f93\u5165\u4fe1\u606f\u63d0\u4ea4post\u7684\u65f6\u5019\uff0c\u5c45\u7136\u6ca1\u6709\u6309\u7167\u9884\u671f\u7684\u51fa\u73b0\u7ed3\u679c\u3002\u51ed\u7740\u6211\u5341\u51e0\u5e74\u524d\u5bf9JavaScript\u7684\u6b8b\u5b58\u8bb0\u5fc6\uff0c\u6211\u4e0d\u614c\u4e0d\u5fd9\u7684\u6253\u5f00\u201c\u5f00\u53d1\u201d\u9762\u677f\uff0c\u67e5\u770b\u63a7\u5236\u53f0\u8f93\u51fa:<\/p>\n\n\n\n
[Error] Preflight response is not successful
[Error] Fetch API cannot load http:\/\/localhost:3000\/api\/users\/login due to access control checks.
[Error] Failed to load resource: Preflight response is not successful (login, line 0)
[Error] Unhandled Promise Rejection: TypeError: Preflight response is not successful<\/p>\n\n\n\n
\u55ef\uff0c\u8c37\u6b4c\u641c\u4e86\u4e00\u4e0b\uff0c\u65e0\u4e00\u4f8b\u5916\u90fd\u8bf4\u662f\u8ddf\u8de8\u7ad9\u6709\u5173\uff0c\u89e3\u51b3\u65b9\u6cd5\u65e0\u975e\u662f\u52a0\u5404\u79cd\u914d\u7f6e\u3002\u6211\u7167\u7740\u4e00\u901a\u6539\u53d1\u73b0\u7ed3\u679c\u4f9d\u65e7\uff0cstackoverflow\u4e0a\u7684\u5404\u79cd\u65b9\u6848\u8bd5\u4e86\u4e2a\u904d\u4e5f\u6ca1\u7528\u4efb\u4f55\u53d8\u5316\u3002\u4e8e\u662f\u5f00\u59cb\u6000\u7591\u662f\u4e0d\u662f\u6d4f\u89c8\u5668\u7684\u95ee\u9898\uff0c\u6b63\u5de7\u7a81\u7136\u641c\u5230\u4e00\u4e2a\u56de\u7b54<\/a>\u5c31\u662f\u8bf4Safari\u6709\u4e2a\u4ec0\u4e48\u4ec0\u4e48bug\u4f1a\u5bfc\u81f4\u7c7b\u4f3c\u7684\u95ee\u9898\uff0c\u5fc3\u4e2d\u4e0d\u7981\u7a83\u559c\uff0c\u7136\u540e\u7f8e\u6ecb\u6ecb\u7684\u53bb\u4e0b\u8f7d\u4e86Firefox\u3002<\/p>\n\n\n\n \u5f53\u7136\uff0c\u8fd9\u5e76\u6ca1\u6709\u4ec0\u4e48\u5375\u7528\uff0cFirefox\u786e\u5b9e\u4e0d\u9519\uff0c\u4ec5\u9650\u4e8e\u9519\u8bef\u4fe1\u606f\u66f4\u52a0\u8be6\u7ec6\uff08\u4e5f\u66f4\u52a0\u5177\u6709\u8bef\u5bfc\u6027\uff09\u3002Firefox\u7684\u63a7\u5236\u53f0\u8f93\u51fa\u4e86\u5982\u4e0b\u9519\u8bef\uff1a<\/p>\n\n\n\n Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at\u00a0http:\/\/localhost:3000\/api\/users\/login<\/a>. (Reason: CORS preflight response did not succeed). \u4e8e\u662f\u6211\u66f4\u52a0\u575a\u5b9a\u662f\u8de8\u7ad9\u8bbf\u95ee\u7684\u95ee\u9898\uff0c\u4ece\u524d\u7aef\u5230\u540e\u7aef\u5404\u79cd\u914d\u7f6e\u548c\u4ee3\u7801\u90fd\u4ed4\u4ed4\u7ec6\u7ec6\u64b8\u4e86\u4e00\u904d\uff0c\u80fd\u52a0\u7684\u5404\u79cd\u5141\u8bb8\u8de8\u7ad9\u7684\u914d\u7f6e\u548c\u4ee3\u7801\u5168\u90e8\u641e\u4e86\u4e00\u5708\u3002 \u6700\u7ec8\u9762\u5bf9\u8c37\u6b4c\u91cc\u4e00\u7247\u88ab\u70b9\u8fc7\u70b9\u94fe\u63a5\u6211\u5fc3\u6001\u6709\u70b9\u5d29\u4e86\uff0c\u6ca1\u60f3\u5230\u521d\u6d89\u524d\u7aef\u5c45\u7136\u5c31\u9047\u5230\u8fd9\u4e48\u5927\u7684\u56f0\u96be\u3002\u800c\u4e14\u8de8\u7ad9\u6309\u7406\u8bf4\u6839\u672c\u4e0d\u7b97\u5565\u590d\u6742\u7684\u95ee\u9898\uff0c\u6211\u5c45\u7136\u90fd\u641e\u4e0d\u5b9a\uff0c\u4e0d\u7981\u9677\u5165\u4e86\u81ea\u6211\u5426\u5b9a\u3002\u4e0d\u8fc7\u75db\u5b9a\u601d\u75db\u8fd8\u662f\u591a\u5e74\u7684\u8df3\u5751\u7ecf\u9a8c\u62ef\u6551\u4e86\u6211\uff0c\u6839\u636e\u7ecf\u9a8c\uff1a\u5982\u679c\u4e00\u4e2abug\u975e\u5e38\u5947\u602a\uff0c\u800c\u4e14\u4f60\u5c1d\u8bd5\u8fc7\u5404\u79cd\u65b9\u6cd5\u90fd\u6ca1\u80fd\u5b8c\u7f8e\u89e3\u51b3\uff0c\u90a3\u4e48\u5b83\u7684root cause\u5fc5\u7136\u975e\u5e38\u7b80\u5355\u800c\u4e14\u975e\u5e38\u611a\u8822\u3002<\/span><\/p>\n\n\n\n \u4e8e\u662f\u6211\u5f00\u59cb\u8bd5\u7740\u8c03\u8bd5\u540e\u7aef\u7684\u6bcf\u4e00\u884c\u5185\u5bb9\uff0c\u5f88\u5feb\u4fbf\u53d1\u73b0\u4ecerequest\u91cc\u62ff\u5230\u7684\u6570\u636e\u662f\u7a7a\u7684\u3002\u7136\u800c\u987a\u7740\u201c\u8bf7\u6c42\u7684body\u662f\u7a7a\u7684\u201d\u8fd9\u4e2a\u7ebf\u7d22\u4e00\u8def\u627e\u4e0b\u53bb\uff0c\u53c8\u7ed5\u4e86\u4e2a\u5f2f\u513f\uff0c\u627e\u4e86\u5f88\u591a\u4ec0\u4e48Flask get_json None\u4e4b\u7c7b\u7684\u95ee\u9898\u4e5f\u662f\u6beb\u65e0\u5e2e\u52a9\u3002\u77e5\u9053\u6700\u7ec8\u6211\u5fc3\u4e00\u6a2a\uff0c\u76f4\u63a5\u628a\u5404\u79cd\u8fd4\u56de\u7684400\u5168\u90fd\u6539\u6210\u4e86200\uff0c\u4e00\u70b9\u5c45\u7136\u6210\u529f\u767b\u9646\u4e86\u3002\u518d\u770b\u540e\u53f0log\u7528\u6237\u540d\u5bc6\u7801\u4e5f\u6b63\u5e38\u3002\u4ed4\u7ec6\u89c2\u5bdf\u53d1\u73b0\u4e00\u6b21\u8bf7\u6c42\u5c45\u7136\u6709\u4e24\u4e2arequest\uff1a\u4e00\u4e2aOPTIONS\u4e00\u4e2aPOST\u3002<\/p>\n\n\n\n \u8fd9\u53ef\u6765\u5230\u4e86\u6211\u77e5\u8bc6\u7684\u8352\u539f\uff0cPOST\u8bf7\u6c42\u6211\u77e5\u9053\uff0c\u8fd9\u4e2aOPTIONS\u662f\u5565\u73a9\u610f\uff1f\uff1f\u539f\u6765\u8fd9\u662f\u6d4f\u89c8\u5668\u81ea\u5df1\u52a0\u7684\u4e00\u4e2a\u8bf7\u6c42\uff0c\u7528\u6765\u9a8c\u8bc1\u5f53\u524d\u7684\u8bf7\u6c42\u662f\u5426\u88ab\u670d\u52a1\u5668\u5141\u8bb8\u3002\u800cGitHub\u4e0a\u4e0b\u8f7d\u7684\u8fd9\u5957\u4ee3\u7801\u4e0d\u77e5\u9053\u4e3a\u4f55\u6ca1\u6709\u5904\u7406OPTIONS\u8bf7\u6c42\uff0c\u800c\u662f\u76f4\u63a5\u5f53\u4f5cPOST\u8bf7\u6c42\u6765\u83b7\u53d6body\u4fe1\u606f\uff0c\u81ea\u7136\u4e3a\u7a7a\u4e86\u3002<\/p>\n\n\n\n \u81f3\u6b64\u771f\u76f8\u5927\u767d\uff0c\u518d\u56de\u5934\u53bb\u770b\u770b\u4e00\u5f00\u59cb\u6d4f\u89c8\u5668\u7684\u9519\u8bef\u63d0\u793a\uff0c\u5176\u5b9e\u662f\u975e\u5e38\u660e\u786e\u7684\uff1aPreflight response is not successful\uff0c\u5c31\u662fOPTIONS\u8bf7\u6c42\u6ca1\u6709\u901a\u8fc7\u3002\u7136\u800c\u56e0\u4e3a\u6211\u7f3a\u4e4f\u76f8\u5e94\u7684\u57fa\u672c\u77e5\u8bc6\uff0c\u540c\u65f6\u4e5f\u56e0\u4e3aroot cause\u5b9e\u5728\u592a\u8fc7\u4e8e\u7b80\u5355\uff0c\u5bfc\u81f4\u7f51\u4e0a\u5404\u79cd\u5bf9\u8fd9\u4e2a\u9519\u8bef\u4ee3\u7801\u7684\u5206\u6790\u91cc\u51e0\u4e4e\u6ca1\u4eba\u63d0\u51fa\u8fd9\u79cd\u53ef\u80fd\u6027\u3002 \u4f5c\u4e3a\u4e00\u4e2a\u8eab\u7ecf\u767e\u6218\u7684\u9762\u5411\u8c37\u6b4c\u548cGitHub\u7f16\u7a0b\u7684\u7a0b\u5e8f\u5458\uff0c\u5bf9\u5404\u79cd\u6280\u672f\u4f3c\u4e4e\u603b\u662f\u7f3a\u4e4f\u4e00\u70b9\u656c\u754f\u5fc3\u7684\u3002\u7136\u800c\u4eca\u5929\u5728\u73a9\u4e00\u5957\u524d\u7aef\u4ee3\u7801\u7684\u65f6\u5019\uff0c\u5dee\u70b9\u5fc3\u6001\u5d29\u6389\u53ef\u8c13\u4e00\u6b21\u7f55\u89c1\u7684\u7ecf\u5386\uff0c\u8bb0\u5f55\u4e0b\u6765\u4ee5\u98e8\u8bfb\u8005\u3002 \u56e0\u4e3a\u4f18\u79c0\u7684\u524d\u7aef\u662f\u5728\u592a\u5c11\uff08\u592a...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-6005","post","type-post","status-publish","format-standard","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/gemchen.cn\/index.php?rest_route=\/wp\/v2\/posts\/6005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gemchen.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gemchen.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gemchen.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gemchen.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6005"}],"version-history":[{"count":0,"href":"https:\/\/gemchen.cn\/index.php?rest_route=\/wp\/v2\/posts\/6005\/revisions"}],"wp:attachment":[{"href":"https:\/\/gemchen.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gemchen.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gemchen.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at\u00a0http:\/\/localhost:3000\/api\/users\/login<\/a>. (Reason: CORS request did not succeed).
TypeError: NetworkError when attempting to fetch resource.<\/p>\n\n\n\n
\u7136\u800c\uff0c\u8fd8\u662f\u6ca1\u6709\u5375\u7528\u3002<\/p>\n\n\n\n
\u540e\u9762\u6211\u53c8\u67e5\u4e86\u4e00\u4e0bOPTIONS\u8bf7\u6c42\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u53d1\u73b0\u786e\u5b9e\u4e0d\u5c11\u4eba\u88ab\u8fd9\u4e1c\u897f\u5751\uff0c\u611f\u89c9\u5230\u8fd9\u6b21\u731c\u5751\u7ecf\u5386\u8fd8\u662f\u5f88\u6709\u610f\u4e49\u7684\uff0c\u4ee5\u4e3a\u8bb0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"