{"id":994,"date":"2023-03-12T07:56:20","date_gmt":"2023-03-11T23:56:20","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=994"},"modified":"2023-04-29T13:20:41","modified_gmt":"2023-04-29T05:20:41","slug":"several-methods-for-front-end-receiving-backend-file-streams-and-downloading-them","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/03\/12\/several-methods-for-front-end-receiving-backend-file-streams-and-downloading-them\/","title":{"rendered":"\u524d\u7aef\u63a5\u6536\u540e\u7aef\u6587\u4ef6\u6d41\u5e76\u4e0b\u8f7d\u7684\u51e0\u79cd\u65b9\u6cd5"},"content":{"rendered":"<p>\u9879\u76ee\u4e2d\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u5bfc\u51fa\u5217\u8868\u5185\u5bb9\uff0c\u6216\u8005\u4e0b\u8f7d\u6587\u4ef6\u4e4b\u7c7b\u7684\u9700\u6c42\u3002<\/p>\n<h2>\u65b9\u6cd5\u4e00<\/h2>\n<h3>\u4f7f\u7528\u573a\u666f<\/h3>\n<p><!-- more --><\/p>\n<p>\u9488\u5bf9\u540e\u7aef\u7684<code>get<\/code>\u8bf7\u6c42<\/p>\n<h3>\u5177\u4f53\u5b9e\u73b0<\/h3>\n<pre><code class=\"language-html\">&lt;a href=&quot;\u540e\u7aef\u6587\u4ef6\u4e0b\u8f7d\u63a5\u53e3\u5730\u5740&quot; &gt;\u4e0b\u8f7d\u6587\u4ef6&lt;\/a&gt;<\/code><\/pre>\n<p>\u76f4\u63a5\u7528\u4e2a<code>&lt;a&gt;<\/code>\u6807\u7b7e\u6765\u63a5\u6536\u540e\u7aef\u7684\u6587\u4ef6\u6d41<\/p>\n<h2>\u65b9\u6cd5\u4e8c<\/h2>\n<h3>\u4f7f\u7528\u573a\u666f<\/h3>\n<p>\u9488\u5bf9\u540e\u7aef\u7684<code>post<\/code>\u8bf7\u6c42\uff0c\u5229\u7528\u539f\u751f\u7684<code>XMLHttpRequest<\/code>\u65b9\u6cd5\u5b9e\u73b0<\/p>\n<h3>\u5177\u4f53\u5b9e\u73b0<\/h3>\n<pre><code class=\"language-javascript\">function request () {\n    const req = new XMLHttpRequest();\n    req.open(&#039;POST&#039;, &#039;&lt;\u63a5\u53e3\u5730\u5740&gt;&#039;, true);\n    req.responseType = &#039;blob&#039;;\n    req.setRequestHeader(&#039;Content-Type&#039;, &#039;application\/json&#039;);\n    req.onload = function() {\n      const data = req.response;\n      const blob = new Blob([data]);\n      const blobUrl = window.URL.createObjectURL(blob);\n      download(blobUrl) ;\n    };\n    req.send(&#039;&lt;\u8bf7\u6c42\u53c2\u6570\uff1ajson\u5b57\u7b26\u4e32&gt;&#039;);\n  };\n\nfunction download(blobUrl) {\n  const a = document.createElement(&#039;a&#039;);\n  a.download = &#039;&lt;\u6587\u4ef6\u540d&gt;&#039;;\n  a.href = blobUrl;\n  a.click();\n}\n\nrequest();<\/code><\/pre>\n<h2>\u65b9\u6cd5\u4e09<\/h2>\n<h3>\u4f7f\u7528\u573a\u666f<\/h3>\n<p>\u9488\u5bf9\u540e\u7aef\u7684<code>post<\/code>\u8bf7\u6c42\uff0c\u5229\u7528\u539f\u751f\u7684<code>fetch<\/code>\u65b9\u6cd5\u5b9e\u73b0<\/p>\n<h3>\u5177\u4f53\u5b9e\u73b0<\/h3>\n<pre><code class=\"language-javascript\">function request() {\n  fetch(&#039;&lt;\u63a5\u53e3\u5730\u5740&gt;&#039;, {\n    method: &#039;POST&#039;,\n    headers: {\n      &#039;Content-Type&#039;: &#039;application\/json&#039;,\n    },\n    body: &#039;&lt;\u8bf7\u6c42\u53c2\u6570\uff1ajson\u5b57\u7b26\u4e32&gt;&#039;,\n  })\n  .then(res =&gt; res.blob())\n  .then(data =&gt; {\n    let blobUrl = window.URL.createObjectURL(data);\n    download(blobUrl);\n  });\n}\n\nfunction download(blobUrl) {\n  const a = document.createElement(&#039;a&#039;);\n  a.download = &#039;&lt;\u6587\u4ef6\u540d&gt;&#039;;\n  a.href = blobUrl;\n  a.click();\n}\n\nrequest();<\/code><\/pre>\n<h2>\u603b\u7ed3<\/h2>\n<ul>\n<li>\u5982\u679c\u540e\u7aef\u63d0\u4f9b\u7684\u4e0b\u8f7d\u63a5\u53e3\u662f<code>get<\/code>\u7c7b\u578b\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u65b9\u6cd5\u4e00\uff0c\u7b80\u5355\u53c8\u4fbf\u6377\uff1b\u5f53\u7136\u5982\u679c\u60f3\u4f7f\u7528\u65b9\u6cd5\u4e8c\u3001\u4e09\u4e5f\u662f\u53ef\u4ee5\u7684\u3002<\/li>\n<li>\u5982\u679c\u540e\u7aef\u63d0\u4f9b\u7684\u4e0b\u8f7d\u63a5\u53e3\u662f<code>post<\/code>\u7c7b\u578b\uff0c\u5c31\u5fc5\u987b\u8981\u7528\u65b9\u6cd5\u4e8c\u6216\u8005\u65b9\u6cd5\u4e09\u3002<\/li>\n<\/ul>\n<p>\u65b9\u6cd5\u4e8c\u548c\u65b9\u6cd5\u4e09\u600e\u4e48\u53d6\u820d\uff1f<\/p>\n<p>\u5f53\u9879\u76ee\u7684\u63a5\u53e3\u8bf7\u6c42\u5168\u662f\u57fa\u4e8e<code>XMLHttpRequest<\/code>\u5b9e\u73b0\u7684\uff0c\u65b9\u6cd5\u4e8c\u66f4\u52a0\u9002\u5408\uff0c\u53ea\u8981\u57fa\u4e8e\u539f\u6765\u9879\u76ee\u4e2d\u7684\u63a5\u53e3\u8bf7\u6c42\u5de5\u5177\u7c7b\u52a0\u4ee5\u6269\u5c55\u5373\u53ef\u3002<br \/>\n\u5f53\u9879\u76ee\u7684\u63a5\u53e3\u8bf7\u6c42\u5168\u662f\u57fa\u4e8e<code>fetch<\/code>\u5b9e\u73b0\u7684\uff0c\u65b9\u6cd5\u4e09\u66f4\u52a0\u9002\u5408\uff0c\u6bd4\u5982\u57fa\u4e8e<code>Ant Design Pro<\/code>\u7684\u540e\u53f0\u7ba1\u7406\u7cfb\u7edf\u9879\u76ee\uff0c\u91cc\u9762\u7684\u8bf7\u6c42\u7c7b\u5c31\u662f\u57fa\u4e8e<code>fetch<\/code>\u7684\uff0c\u6240\u4ee5\u76f4\u63a5\u4f7f\u7528\u65b9\u6cd5\u4e09\uff0c\u53ea\u8981\u5728\u5176<code>request.js<\/code>\u6587\u4ef6\u4e2d\u7a0d\u4f5c\u4fee\u6539\u5373\u53ef\u3002<\/p>\n<p>\u5f53\u7136\u8fd9\u91cc\u8ba8\u8bba\u7684\u662f\u4e24\u79cd\u539f\u751f\u7684\u8bf7\u6c42\u65b9\u5f0f\uff0c\u5982\u679c\u9879\u76ee\u4e2d\u5f15\u7528\u4e86\u7b2c\u4e09\u65b9\u8bf7\u6c42\u5305\u6765\u53d1\u9001\u8bf7\u6c42\uff0c\u6bd4\u5982<code>axios<\/code>\u4e4b\u7c7b\u7684\uff0c\u90a3\u5c31\u53e6\u5f53\u522b\u8bba\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9879\u76ee\u4e2d\u7ecf\u5e38\u4f1a\u9047\u5230\u9700\u8981\u5bfc\u51fa\u5217\u8868\u5185\u5bb9\uff0c\u6216\u8005\u4e0b\u8f7d\u6587\u4ef6\u4e4b\u7c7b\u7684\u9700\u6c42\u3002 \u65b9\u6cd5\u4e00 \u4f7f\u7528\u573a\u666f \u9488\u5bf9\u540e\u7aef\u7684get\u8bf7\u6c42 \u5177\u4f53\u5b9e\u73b0  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[84],"class_list":["post-994","post","type-post","status-publish","format-standard","hentry","category-frontend-basic","tag-javascript"],"_links":{"self":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/994","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/comments?post=994"}],"version-history":[{"count":0,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/posts\/994\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/media?parent=994"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/categories?post=994"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.appblog.cn\/index.php\/wp-json\/wp\/v2\/tags?post=994"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}