{"id":291,"date":"2020-10-20T23:33:12","date_gmt":"2020-10-20T15:33:12","guid":{"rendered":"http:\/\/moyisuiying.com\/?p=291"},"modified":"2020-12-10T14:23:35","modified_gmt":"2020-12-10T06:23:35","slug":"flask%e8%a7%a3%e5%86%b3%e8%b7%a8%e5%9f%9f%e8%af%b7%e6%b1%82%e9%97%ae%e9%a2%98","status":"publish","type":"post","link":"http:\/\/moyisuiying.com\/index.php\/python\/291.html","title":{"rendered":"Flask\u89e3\u51b3\u8de8\u57df\u8bf7\u6c42\u95ee\u9898"},"content":{"rendered":"\n<p>\u7b14\u8005\u5728Python\u722c\u866b\u722c\u53d6\u804c\u4f4d\u4fe1\u606f\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f7f\u7528\u7684web\u6846\u67b6\u4e3aflask\uff0c\u5728\u5b9e\u9a8c\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u8bf7\u6c42\u5df2\u7ecf\u8fd4\u56de\u6210\u529f\uff0c\u4f46\u662f\u5374\u65e0\u6cd5\u5728\u9875\u9762\u4e2d\u663e\u793a\u51fa\u7ed3\u679c<br><img   class=\"lazyload\" data-src=\"https:\/\/img-blog.csdnimg.cn\/20201020232429477.png#pic_center\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p >\n<noscript><img src=\"https:\/\/img-blog.csdnimg.cn\/20201020232429477.png#pic_center\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p><\/noscript>\n\n\n\n<p>\u901a\u8fc7\u6d4f\u89c8\u5668\u7684\u63a7\u5236\u53f0\u53d1\u73b0\u662f\u56e0\u4e3a\u7531\u4e8e\u51fa\u73b0\u4e86\u7531\u4e8e\u8de8\u57df\u8bf7\u6c42\u5b89\u5168\u95ee\u9898\u5bfc\u81f4\u88ab\u6d4f\u89c8\u5668\u62e6\u622a\u4e86\u3002<br><img   class=\"lazyload\" data-src=\"https:\/\/img-blog.csdnimg.cn\/20201020232458408.png#pic_center\" src=\"https:\/\/cdn.jsdelivr.net\/gh\/moezx\/cdn@3.0.2\/img\/svg\/loader\/trans.ajax-spinner-preloader.svg\" onerror=\"imgError(this)\"  alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p >\n<noscript><img src=\"https:\/\/img-blog.csdnimg.cn\/20201020232458408.png#pic_center\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"><\/p><\/noscript>\n\n\n\n<h4>\u8de8\u57df\u8bf7\u6c42\u539f\u7406\uff1a<\/h4>\n\n\n\n<p>\u200b \u5728 HTML \u4e2d\uff0c<code>&lt;a&gt;<\/code>, <code>&lt;form&gt;<\/code>, <code>&lt;img&gt;<\/code>, <code>&lt;script&gt;<\/code>, <code>&lt;iframe&gt;<\/code>, <code>&lt;link&gt;<\/code> \u7b49\u6807\u7b7e\u4ee5\u53ca Ajax \u90fd\u53ef\u4ee5\u6307\u5411\u4e00\u4e2a\u8d44\u6e90\u5730\u5740\uff0c\u800c\u6240\u8c13\u7684<strong>\u8de8\u57df\u8bf7\u6c42<\/strong>\u5c31\u662f\u6307\uff1a\u5f53\u524d\u53d1\u8d77\u8bf7\u6c42\u7684\u57df\u4e0e\u8be5\u8bf7\u6c42\u6307\u5411\u7684\u8d44\u6e90\u6240\u5728\u7684\u57df\u4e0d\u4e00\u6837\u3002\u8fd9\u91cc\u7684\u57df\u6307\u7684\u662f\u8fd9\u6837\u7684\u4e00\u4e2a\u6982\u5ff5\uff1a\u6211\u4eec\u8ba4\u4e3a\u82e5\u534f\u8bae + \u57df\u540d + \u7aef\u53e3\u53f7\u5747\u76f8\u540c\uff0c\u90a3\u4e48\u5c31\u662f\u540c\u57df\u3002<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff1a\u5047\u5982\u4e00\u4e2a\u57df\u540d\u4e3a<code>a.com<\/code>\u7684\u7f51\u7ad9\uff0c\u5b83\u53d1\u8d77\u4e00\u4e2a\u8d44\u6e90\u8def\u5f84\u4e3a<code>a.com\/addUser<\/code>\u7684 Ajax \u8bf7\u6c42\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8bf7\u6c42\u662f\u540c\u57df\u7684\uff0c\u56e0\u4e3a\u8d44\u6e90\u8def\u5f84\u7684\u534f\u8bae\u3001\u57df\u540d\u4ee5\u53ca\u7aef\u53e3\u53f7\u4e0e\u5f53\u524d\u57df\u4e00\u81f4\uff08\u4f8b\u5b50\u4e2d\u534f\u8bae\u540d\u9ed8\u8ba4\u4e3ahttp\uff0c\u7aef\u53e3\u53f7\u9ed8\u8ba4\u4e3a80\uff09\u3002\u4f46\u662f\uff0c\u5982\u679c\u53d1\u8d77\u4e00\u4e2a\u8d44\u6e90\u8def\u5f84\u4e3ab.cn\/addUser`\u7684 Ajax \u8bf7\u6c42\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8bf7\u6c42\u5c31\u662f\u8de8\u57df\u8bf7\u6c42\uff0c\u56e0\u4e3a\u57df\u4e0d\u4e00\u81f4\uff0c\u4e0e\u6b64\u540c\u65f6\u7531\u4e8e\u5b89\u5168\u95ee\u9898\uff0c\u8fd9\u79cd\u8bf7\u6c42\u4f1a\u53d7\u5230\u540c\u6e90\u7b56\u7565\u9650\u5236\u3002<\/p>\n\n\n\n<h4>\u89e3\u51b3\u529e\u6cd5\uff1a<\/h4>\n\n\n\n<p>\u200b \u4f7f\u7528\u8de8\u6e90\u8d44\u6e90\u5171\u4eab <strong>Cross-Origin Resource Sharing(CORS)<\/strong> \u8fdb\u884c\u5904\u7406\u3002\u8de8\u6e90\u8d44\u6e90\u5171\u4eab <strong>Cross-Origin Resource Sharing(CORS)<\/strong> \u662f\u4e00\u4e2a\u65b0\u7684 W3C \u6807\u51c6\uff0c\u5b83\u65b0\u589e\u7684\u4e00\u7ec4HTTP\u9996\u90e8\u5b57\u6bb5\uff0c\u5141\u8bb8\u670d\u52a1\u7aef\u5176\u58f0\u660e\u54ea\u4e9b\u6e90\u7ad9\u6709\u6743\u9650\u8bbf\u95ee\u54ea\u4e9b\u8d44\u6e90\u3002\u6362\u8a00\u4e4b\uff0c\u5b83\u5141\u8bb8\u6d4f\u89c8\u5668\u5411\u58f0\u660e\u4e86 CORS \u7684\u8de8\u57df\u670d\u52a1\u5668\uff0c\u53d1\u51fa XMLHttpReuest \u8bf7\u6c42\uff0c\u4ece\u800c\u514b\u670d Ajax \u53ea\u80fd\u540c\u6e90\u4f7f\u7528\u7684\u9650\u5236\u3002\u8fd9\u662f\u89e3\u51b3\u8de8\u57df\u95ee\u9898\u7684\u5176\u4e2d\u4e00\u4e2a\u529e\u6cd5\uff0c\u66f4\u591a\u529e\u6cd5\u8bf7\u81ea\u884c\u767e\u5ea6\u3002<\/p>\n\n\n\n<p>\u53e6\u5916\uff0c\u89c4\u8303\u4e5f\u8981\u6c42\u5bf9\u4e8e\u975e\u7b80\u5355\u8bf7\u6c42\uff0c\u6d4f\u89c8\u5668\u5fc5\u987b\u9996\u5148\u4f7f\u7528 OPTION \u65b9\u6cd5\u53d1\u8d77\u4e00\u4e2a\u9884\u68c0\u8bf7\u6c42(preflight request)\uff0c\u4ece\u800c\u83b7\u77e5\u670d\u52a1\u7aef\u662f\u5426\u5141\u8bb8\u8be5\u8de8\u57df\u8bf7\u6c42\uff0c\u5728\u670d\u52a1\u5668\u786e\u5b9a\u5141\u8bb8\u540e\uff0c\u624d\u53d1\u8d77\u5b9e\u9645\u7684HTTP\u8bf7\u6c42\u3002\u5bf9\u4e8e\u7b80\u5355\u8bf7\u6c42\u3001\u975e\u7b80\u5355\u8bf7\u6c42\u4ee5\u53ca\u9884\u68c0\u8bf7\u6c42\u7684\u8be6\u7ec6\u8d44\u6599\u53ef\u4ee5\u9605\u8bfb<a href=\"https:\/\/developer.mozilla.org\/zh-CN\/docs\/Web\/HTTP\/Access_control_CORS\" target=\"_blank\"  rel=\"nofollow\" >\u8de8\u8d44\u6e90\u5171\u4eab<\/a>\u3002<\/p>\n\n\n\n<p>\u200b \u5177\u4f53\u6b65\u9aa4\u4e3a\uff1a<br>\uff081\uff09\u5b89\u88c5flask-core\uff1a<br>\u200b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>pip install flask-cors<\/code><\/pre>\n\n\n\n<p>\uff082\uff09\u5728flask\u7684\u63a7\u5236\u5668\u542f\u52a8\u7c7b\u4e2d\u5bfc\u5165CORS\u5373\u53ef\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>from flask import Flask, request\nfrom flask_cors import *\napp = Flask(__name__)\n# \u89e3\u51b3\u8de8\u57df\u8bf7\u6c42\u8d44\u6e90\u88ab\u62e6\u622a\u95ee\u9898\nCORS(app, supports_credentials=True, resources=r\"\/*\")<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b14\u8005\u5728Python\u722c\u866b\u722c\u53d6\u804c\u4f4d\u4fe1\u606f\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f7f\u7528\u7684web\u6846\u67b6\u4e3aflask\uff0c\u5728\u5b9e\u9a8c\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u8bf7\u6c42\u5df2\u7ecf\u8fd4\u56de\u6210\u529f\uff0c\u4f46\u662f\u5374\u65e0\u6cd5\u5728\u9875\u9762\u4e2d\u663e\u793a &#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[57],"tags":[61,60,66,65],"_links":{"self":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/291"}],"collection":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/comments?post=291"}],"version-history":[{"count":1,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/291\/revisions"}],"predecessor-version":[{"id":292,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/posts\/291\/revisions\/292"}],"wp:attachment":[{"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/media?parent=291"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/categories?post=291"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/moyisuiying.com\/index.php\/wp-json\/wp\/v2\/tags?post=291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}