{"id":34155,"date":"2024-11-25T10:17:05","date_gmt":"2024-11-25T02:17:05","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34155\/"},"modified":"2024-11-25T10:17:05","modified_gmt":"2024-11-25T02:17:05","slug":"%e5%b0%8f%e7%a8%8b%e5%ba%8f%e6%80%8e%e4%b9%88%e6%9f%a5%e7%9c%8bbase64%e5%9b%be%e7%89%87","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34155\/","title":{"rendered":"\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247"},"content":{"rendered":"<p>\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\uff1f\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e00\u4e0b\u5c0f\u7a0b\u5e8f\u4e2d\u9884\u89c8base64\u56fe\u7247\u7684\u65b9\u6cd5\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/024\/61b6ab36c5f84702.jpg\" class=\"aligncenter\" title=\"\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u63d2\u56fe\" alt=\"\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u63d2\u56fe\" \/><\/p>\n<p>\u4e00\u3001\u540e\u53f0\u4f20\u8fc7\u6765\u7684\u56fe\u7247\u4e3abase64\u683c\u5f0f\u7684\uff0c\u663e\u793a\u7684\u8bdd\u7528\u3010&#8221;data:image\/PNG;base64,&#8221; + data\u3011\u5c31\u53ef\u4ee5\u6b63\u5e38\u663e\u793a\u3002\u7136\u540e\u5728\u8c03\u7528\u5fae\u4fe1API\u63a5\u53e3previewImage\u5374\u6709\u8bf8\u591a\u95ee\u9898\uff0c\u5982\uff1a<\/p>\n<ul>\n<li>windows\u5f00\u53d1\u5de5\u5177\u9ed1\u5c4f<\/li>\n<li>\u90e8\u5206\u5b89\u5353\u673a\u578b\u65e0\u6cd5\u663e\u793a<\/li>\n<li>\u63a7\u5236\u53f0\u62a5\u9519\u7b49<\/li>\n<\/ul>\n<p>\u4e8c\u3001\u7ecf\u8fc7\u67e5\u8be2\uff0c\u627e\u5230\u4e86\u5b98\u65b9\u7684\u56de\u7b54\u3002\u5fae\u4fe1\u5b98\u65b9\u7684\u610f\u601d\u662f\u9700\u8981\u7528url\u5730\u5740\uff0c\u4e0d\u652f\u6301base64\u683c\u5f0f\uff0c\u4ee5\u4e0b\u662f\u5fae\u4fe1\u5b98\u65b9\u56de\u7b54\uff1a<\/p>\n<blockquote><p>\n  wx.previewImage API \u9884\u89c8base64\u56fe\u7247\u5bfc\u81f4\u5fae\u4fe1\u95ea\u9000? | \u5fae\u4fe1\u5f00\u653e\u793e\u533a (qq.com)https:\/\/developers.weixin.qq.com\/community\/develop\/doc\/00088c9e44c3d880597ab22b15bc00?highLine=wx.previewImage%20base64\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/798\/557\/744\/1639360850991125.png\" class=\"aligncenter\" title=\"\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u63d2\u56fe1\" alt=\"\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u63d2\u56fe1\" \/><\/p>\n<h2>\u89e3\u51b3\u65b9\u6848<\/h2>\n<blockquote>\n<p>\u601d\u8def\uff1a\u5148\u628abase64\u4f5c\u4e3a\u4e34\u65f6\u6587\u4ef6\u5b58\u5230\u672c\u5730\uff0c\u7136\u540e\u9884\u89c8\uff0c\u9884\u89c8\u7ed3\u675f\u65f6\u5220\u9664\u4e34\u65f6\u6587\u4ef6<\/p>\n<\/blockquote>\n<pre>\/\/&nbsp;\u83b7\u53d6\u5e94\u7528\u5b9e\u4f8b\nconst&nbsp;app&nbsp;=&nbsp;getApp()\n\nPage({\n&nbsp;&nbsp;data:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/base64\u6570\u636e\uff0c\u7531\u540e\u53f0\u4f20\u8fc7\u6765\n&nbsp;&nbsp;&nbsp;&nbsp;base64:&nbsp;'',\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/\u672c\u673a\u7684\u4e34\u65f6\u6587\u4ef6\u8def\u5f84\n&nbsp;&nbsp;&nbsp;&nbsp;localImgUrl:&nbsp;''\n&nbsp;&nbsp;},\n\n&nbsp;&nbsp;onShow:&nbsp;function()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/&nbsp;\u5728\u8fd9\u91cc\u5220\u9664\u4e34\u65f6\u6587\u4ef6\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;localImgUrl&nbsp;=&nbsp;this.data.localImgUrl;\n&nbsp;&nbsp;&nbsp;&nbsp;if(localImgUrl)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;fs&nbsp;=&nbsp;wx.getFileSystemManager();\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fs.unlinkSync(localImgUrl);\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fs.closeSync();\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;\n&nbsp;&nbsp;\/\/\u9884\u89c8\u56fe\u7247\n&nbsp;&nbsp;onPreviewImage()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;base64&nbsp;=&nbsp;\"data:image\/PNG;base64,\"&nbsp;+&nbsp;this.data.base64;\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;imgPath&nbsp;=&nbsp;wx.env.USER_DATA_PATH&nbsp;+&nbsp;'\/e-invoice'&nbsp;+&nbsp;Date.parse(new&nbsp;Date())&nbsp;+&nbsp;'.png';\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;imageData&nbsp;=&nbsp;base64.replace(\/^data:image\/w+;base64,\/,&nbsp;\"\");\n&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;fs&nbsp;=&nbsp;wx.getFileSystemManager();\n&nbsp;&nbsp;&nbsp;&nbsp;fs.writeFileSync(imgPath,&nbsp;imageData,&nbsp;\"base64\");\n&nbsp;&nbsp;&nbsp;&nbsp;fs.close();\n&nbsp;&nbsp;&nbsp;&nbsp;this.setData({\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;localImgUrl:&nbsp;imgPath\n&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;&nbsp;&nbsp;wx.previewImage({\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;urls:&nbsp;[imgPath]&nbsp;\/\/&nbsp;\u9700\u8981\u9884\u89c8\u7684\u56fe\u7247http\u94fe\u63a5\u5217\u8868\n&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;}\n})<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u3010\u76f8\u5173\u5b66\u4e60\u63a8\u8350\uff1a\u3011<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\uff1f\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e00\u4e0b\u5c0f\u7a0b\u5e8f\u4e2d\u9884\u89c8base64\u56fe\u7247\u7684\u65b9\u6cd5\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01 \u4e00\u3001\u540e\u53f0\u4f20\u8fc7\u6765\u7684\u56fe\u7247\u4e3abase64\u683c\u5f0f\u7684\uff0c\u663e\u793a\u7684\u8bdd\u7528\u3010&#8221;data:image\/PNG;base64,&#8221; + data\u3011\u5c31\u53ef\u4ee5\u6b63\u5e38\u663e\u793a\u3002\u7136\u540e\u5728\u8c03\u7528\u5fae\u4fe1API\u63a5\u53e3previewImage\u5374\u6709\u8bf8\u591a\u95ee\u9898\uff0c\u5982\uff1a windows\u5f00\u53d1\u5de5\u5177\u9ed1\u5c4f \u90e8\u5206\u5b89\u5353\u673a\u578b\u65e0\u6cd5\u663e\u793a \u63a7\u5236\u53f0\u62a5\u9519\u7b49 \u4e8c\u3001\u7ecf\u8fc7\u67e5\u8be2\uff0c\u627e\u5230\u4e86\u5b98\u65b9\u7684\u56de\u7b54\u3002\u5fae\u4fe1\u5b98\u65b9\u7684\u610f\u601d\u662f\u9700\u8981\u7528url\u5730\u5740\uff0c\u4e0d\u652f\u6301base64\u683c\u5f0f\uff0c\u4ee5\u4e0b\u662f\u5fae\u4fe1\u5b98\u65b9\u56de\u7b54\uff1a wx.previewImage API \u9884\u89c8base64\u56fe\u7247\u5bfc\u81f4\u5fae\u4fe1\u95ea\u9000? | \u5fae\u4fe1\u5f00\u653e\u793e\u533a (qq.com)https:\/\/developers.weixin.qq.com\/community\/develop\/doc\/00088c9e44c3d880597ab22b15bc00?highLine=wx.previewImage%20base64 \u89e3\u51b3\u65b9\u6848 \u601d\u8def\uff1a\u5148\u628abase64\u4f5c\u4e3a\u4e34\u65f6\u6587\u4ef6\u5b58\u5230\u672c\u5730\uff0c\u7136\u540e\u9884\u89c8\uff0c\u9884\u89c8\u7ed3\u675f\u65f6\u5220\u9664\u4e34\u65f6\u6587\u4ef6 \/\/&nbsp;\u83b7\u53d6\u5e94\u7528\u5b9e\u4f8b const&nbsp;app&nbsp;=&nbsp;getApp() Page({ &nbsp;&nbsp;data:&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;\/\/base64\u6570\u636e\uff0c\u7531\u540e\u53f0\u4f20\u8fc7\u6765 &nbsp;&nbsp;&nbsp;&nbsp;base64:&nbsp;&#8221;, &nbsp;&nbsp;&nbsp;&nbsp;\/\/\u672c\u673a\u7684\u4e34\u65f6\u6587\u4ef6\u8def\u5f84 &nbsp;&nbsp;&nbsp;&nbsp;localImgUrl:&nbsp;&#8221; &nbsp;&nbsp;}, &nbsp;&nbsp;onShow:&nbsp;function()&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;\/\/&nbsp;\u5728\u8fd9\u91cc\u5220\u9664\u4e34\u65f6\u6587\u4ef6 &nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;localImgUrl&nbsp;=&nbsp;this.data.localImgUrl; &nbsp;&nbsp;&nbsp;&nbsp;if(localImgUrl)&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;fs&nbsp;=&nbsp;wx.getFileSystemManager(); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fs.unlinkSync(localImgUrl); &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fs.closeSync(); &nbsp;&nbsp;&nbsp;&nbsp;} &nbsp;&nbsp;}, &nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;\/\/\u9884\u89c8\u56fe\u7247 &nbsp;&nbsp;onPreviewImage()&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;base64&nbsp;=&nbsp;&#8220;data:image\/PNG;base64,&#8221;&nbsp;+&nbsp;this.data.base64; &nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;imgPath&nbsp;=&nbsp;wx.env.USER_DATA_PATH&nbsp;+&nbsp;&#8216;\/e-invoice&#8217;&nbsp;+&nbsp;Date.parse(new&nbsp;Date())&nbsp;+&nbsp;&#8216;.png&#8217;; &nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;imageData&nbsp;=&nbsp;base64.replace(\/^data:image\/w+;base64,\/,&nbsp;&#8220;&#8221;); &nbsp;&nbsp;&nbsp;&nbsp;var&nbsp;fs&nbsp;=&nbsp;wx.getFileSystemManager(); &nbsp;&nbsp;&nbsp;&nbsp;fs.writeFileSync(imgPath,&nbsp;imageData,&nbsp;&#8220;base64&#8221;); &nbsp;&nbsp;&nbsp;&nbsp;fs.close(); &nbsp;&nbsp;&nbsp;&nbsp;this.setData({ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;localImgUrl:&nbsp;imgPath &nbsp;&nbsp;&nbsp;&nbsp;}) &nbsp;&nbsp;&nbsp;&nbsp;wx.previewImage({ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;urls:&nbsp;[imgPath]&nbsp;\/\/&nbsp;\u9700\u8981\u9884\u89c8\u7684\u56fe\u7247http\u94fe\u63a5\u5217\u8868 &nbsp;&nbsp;&nbsp;&nbsp;}) &nbsp;&nbsp;} }) \u767b\u5f55\u540e\u590d\u5236 \u3010\u76f8\u5173\u5b66\u4e60\u63a8\u8350\uff1a\u3011 \u4ee5\u4e0a\u5c31\u662f\u5c0f\u7a0b\u5e8f\u600e\u4e48\u67e5\u770bbase64\u56fe\u7247\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-34155","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=34155"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34155\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}