{"id":34189,"date":"2024-11-25T11:50:56","date_gmt":"2024-11-25T03:50:56","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34189\/"},"modified":"2024-11-25T11:50:56","modified_gmt":"2024-11-25T03:50:56","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8%e5%b0%8f%e7%a8%8b%e5%ba%8f%e7%9a%84canvas%e6%9d%a5%e7%bb%98%e5%88%b6%e4%ba%8c%e7%bb%b4%e7%a0%81%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34189\/","title":{"rendered":"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f"},"content":{"rendered":"<p>\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5982\u4f55\u751f\u6210\u4e8c\u7ef4\u7801\uff1f\u4e0b\u9762\u672c\u7bc7\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e00\u4e0b\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u80fd\u529b\u7ed8\u5236\u4e8c\u7ef4\u7801\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\/61d64ee89d288417.jpg\" class=\"aligncenter\" title=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe\" alt=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe\" \/><\/p>\n<p>\u5728\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u7684\u4e1a\u52a1\u4e2d\u4f1a\u6709\u4e00\u4e9b\u9700\u8981\u5c55\u793a\u4e8c\u7ef4\u7801\u7684\u573a\u666f\u3002\u9759\u6001\u4e8c\u7ef4\u7801\u53ef\u4ee5\u76f4\u63a5\u5b58\u653e\u5728\u672c\u5730\uff0c\u4f7f\u7528\u56fe\u7247\u65b9\u5f0f\u5c55\u793a\uff0c\u4f46\u4e0d\u9002\u5408\u6839\u636e\u7528\u6237\u76f8\u5173\u4fe1\u606f\u751f\u6210\u52a8\u6001\u7684\u4e8c\u7ef4\u7801\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e0b\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u80fd\u529b\u7ed8\u5236\u4e8c\u7ef4\u7801\u3002<\/p>\n<h2>1 \u65b9\u6cd5\u4e00\uff1a\u901a\u8fc7wx-qr\u76f4\u63a5\u751f\u6210<\/h2>\n<p><strong><span style=\"font-size: 16px\">1.1 DEMO<\/span><\/strong><\/p>\n<\/p>\n<table>\n<tbody>\n<tr>\n<td> <img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/414\/636\/607\/1641434319281933.png\" style=\"max-width:90%\" class=\"aligncenter\" title=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe1\" alt=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe1\" \/> \u542b\u80cc\u666f\u56fe <\/td>\n<td> <img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/278\/257\/442\/1641434328678342.png\" style=\"max-width:90%\" class=\"aligncenter\" title=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe2\" alt=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe2\" \/> \u542blogo <\/td>\n<td> <img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/871\/396\/214\/1641434334765322.png\" style=\"max-width:90%\" class=\"aligncenter\" title=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe3\" alt=\"\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\u63d2\u56fe3\" \/> \u542blogo+\u80cc\u666f\u56fe <\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong><span style=\"font-size: 16px\">1.2 \u5b89\u88c5<\/span><\/strong><\/p>\n<pre>#&nbsp;\u901a\u8fc7&nbsp;npm&nbsp;\u5b89\u88c5\nnpm&nbsp;i&nbsp;wx-qr&nbsp;-S\n\n#&nbsp;\u901a\u8fc7&nbsp;yarn&nbsp;\u5b89\u88c5\nyarn&nbsp;add&nbsp;wx-qr<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong><span style=\"font-size: 16px\">1.3 \u4f7f\u7528\u7ec4\u4ef6<\/span><\/strong><\/p>\n<p>\u9996\u5148\u5728\u4f60\u6240\u5f00\u53d1\u7684\u5c0f\u7a0b\u5e8f\u6839\u76ee\u5f55&nbsp;app.json&nbsp;\u6216\u9700\u8981\u4f7f\u7528\u8be5\u7ec4\u4ef6\u7684&nbsp;xxx.json&nbsp;\u4e2d\u5f15\u7528\u7ec4\u4ef6<\/p>\n<p>\uff08\u6ce8\u610f\uff1a\u8bf7\u4e0d\u8981\u5c06\u7ec4\u4ef6\u547d\u540d\u4e3a&nbsp;wx-xxx&nbsp;\u5f00\u5934\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u89e3\u6790 tag \u5931\u8d25 \uff09<\/p>\n<pre>{\n&nbsp;&nbsp;\"usingComponents\":&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;\"qr-container\":&nbsp;\"wx-qr\"\n&nbsp;&nbsp;}\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4e4b\u540e\u5c31\u53ef\u4ee5\u5728 wxml \u4e2d\u76f4\u63a5\u4f7f\u7528\u7ec4\u4ef6<\/p>\n<pre>&lt;qr-container&gt;&lt;\/qr-container&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<pre>Page({\n&nbsp;&nbsp;&nbsp;&nbsp;data:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;qrTxt:&nbsp;'https:\/\/github.com\/liuxdi\/wx-qr',\n&nbsp;&nbsp;&nbsp;&nbsp;},\n});<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5f53\u7136\uff0c\u8fd8\u53ef\u4ee5\u652f\u6301\u5f88\u591a\u79cd\u914d\u7f6e\uff0c\u8be6\u89c1&nbsp;\u6216\u8005&nbsp;\u6587\u6863\u3002<\/p>\n<h2>2. \u65b9\u5f0f\u4e8c\uff1a\u57fa\u4e8eQRCode.js\u7ed3\u5408canvas\u7ed8\u5236<\/h2>\n<p><strong><span style=\"font-size: 16px\">2.0 \u4e8c\u7ef4\u7801\u7684\u7ec4\u6210\u90e8\u5206<\/span><\/strong><\/p>\n<blockquote><p>\n  \u5b9a\u4f4d\u56fe\u6848Position Detection Pattern\u662f\u5b9a\u4f4d\u56fe\u6848\uff0c\u7528\u4e8e\u6807\u8bb0\u4e8c\u7ef4\u7801\u7684\u77e9\u5f62\u5927\u5c0f\u3002\u8fd9\u4e09\u4e2a\u5b9a\u4f4d\u56fe\u6848\u6709\u767d\u8fb9\u53ebSeparators for Postion Detection Patterns\u3002\u4e4b\u6240\u4ee5\u4e09\u4e2a\u800c\u4e0d\u662f\u56db\u4e2a\u610f\u601d\u5c31\u662f\u4e09\u4e2a\u5c31\u53ef\u4ee5\u6807\u8bc6\u4e00\u4e2a\u77e9\u5f62\u4e86\u3002Timing Patterns\u4e5f\u662f\u7528\u4e8e\u5b9a\u4f4d\u7684\u3002\u539f\u56e0\u662f\u4e8c\u7ef4\u7801\u670940\u79cd\u5c3a\u5bf8\uff0c\u5c3a\u5bf8\u8fc7\u5927\u4e86\u540e\u9700\u8981\u6709\u6839\u6807\u51c6\u7ebf\uff0c\u4e0d\u7136\u626b\u63cf\u7684\u65f6\u5019\u53ef\u80fd\u4f1a\u626b\u6b6a\u4e86\u3002Alignment Patterns \u53ea\u6709Version 2\u4ee5\u4e0a\uff08\u5305\u62ecVersion2\uff09\u7684\u4e8c\u7ef4\u7801\u9700\u8981\u8fd9\u4e2a\u4e1c\u4e1c\uff0c\u540c\u6837\u662f\u4e3a\u4e86\u5b9a\u4f4d\u7528\u7684\u3002\u529f\u80fd\u6027\u6570\u636eFormat Information \u5b58\u5728\u4e8e\u6240\u6709\u7684\u5c3a\u5bf8\u4e2d\uff0c\u7528\u4e8e\u5b58\u653e\u4e00\u4e9b\u683c\u5f0f\u5316\u6570\u636e\u7684\u3002Version Information \u5728 &gt;= Version 7\u4ee5\u4e0a\uff0c\u9700\u8981\u9884\u7559\u4e24\u57573 x 6\u7684\u533a\u57df\u5b58\u653e\u4e00\u4e9b\u7248\u672c\u4fe1\u606f\u3002\u6570\u636e\u7801\u548c\u7ea0\u9519\u7801\u9664\u4e86\u4e0a\u8ff0\u7684\u90a3\u4e9b\u5730\u65b9\uff0c\u5269\u4e0b\u7684\u5730\u65b9\u5b58\u653e Data Code \u6570\u636e\u7801 \u548c Error Correction Code \u7ea0\u9519\u7801\u3002\n<\/p><\/blockquote>\n<p><strong><span style=\"font-size: 16px\">2.1 \u5f15\u5165\u4e8c\u7ef4\u7801\u6570\u636e\u751f\u6210\u5e93<\/span><\/strong><\/p>\n<p>\u590d\u5236\u81f3\u4f60\u7684\u5c0f\u7a0b\u5e8f\u76f8\u5e94\u76ee\u5f55\u3002<\/p>\n<p><span style=\"font-size: 16px\"><strong>2.2 \u5c0f\u7a0b\u5e8f\u4e2d\u5efa\u7acbcanvas\u6807\u7b7e\uff0c\u5e76\u7ed9canvas\u8bbe\u7f6e\u957f\u5bbd<\/strong><\/span><\/p>\n<pre>&lt;canvas&gt;&lt;\/canvas&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><span style=\"font-size: 16px\"><strong>2.3\u83b7\u53d6canvas\u5b9e\u4f8b\u53ca\u4e0a\u4e0b\u6587<\/strong><\/span><\/p>\n<pre>const&nbsp;query&nbsp;=&nbsp;this.createSelectorQuery();\nlet&nbsp;dpr&nbsp;=&nbsp;wx.getSystemInfoSync().pixelRatio;\nquery.select('#qr').fields({&nbsp;node:&nbsp;true,&nbsp;size:&nbsp;true,&nbsp;id:&nbsp;true&nbsp;})\n&nbsp;&nbsp;.exec((res)&nbsp;=&amp;gt;&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;{&nbsp;node:&nbsp;canvas,&nbsp;height,&nbsp;width&nbsp;}&nbsp;=&nbsp;res[0];\n&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;ctx&nbsp;=&nbsp;canvas.getContext('2d');\n&nbsp;&nbsp;&nbsp;&nbsp;canvas.width&nbsp;=&nbsp;width&nbsp;*&nbsp;dpr\n&nbsp;&nbsp;&nbsp;&nbsp;canvas.height&nbsp;=&nbsp;height&nbsp;*&nbsp;dpr\n&nbsp;&nbsp;&nbsp;&nbsp;ctx.scale(dpr,&nbsp;dpr);\n&nbsp;&nbsp;})<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><span style=\"font-size: 16px\"><strong>2.4 \u5b9a\u4e49\u4e00\u4e9b\u53d8\u91cf\u53ca\u7ed8\u5236\u4e8c\u7ef4\u7801\u7684\u6570\u636e\u7801\u533a<\/strong><\/span><\/p>\n<p>\u5176\u4e2d<strong>QRCodeModel<\/strong>\u662f\u4eceqrCode.js\u4e2d\u5bfc\u5165\u7684<\/p>\n<pre>\/\/&nbsp;\u4e8c\u7ef4\u7801\u7684\u989c\u8272\nconst&nbsp;colorDark&nbsp;=&nbsp;'#000';\n\/\/&nbsp;\u83b7\u53d6\u4e8c\u7ef4\u7801\u7684\u5927\u5c0f\uff0c\u56e0css\u8bbe\u7f6e\u7684\u4e3a750rpx\uff0c\u5c06\u5176\u8f6c\u4e3apx\nconst&nbsp;rawViewportSize&nbsp;=&nbsp;getPxFromRpx(750);\n\/\/&nbsp;\u4e8c\u7ef4\u7801\u5bb9\u9519\u7387{&nbsp;L:&nbsp;1,&nbsp;M:&nbsp;0,&nbsp;Q:&nbsp;3,&nbsp;H:&nbsp;2&nbsp;}\nconst&nbsp;correctLevel&nbsp;=&nbsp;0;\n\/\/&nbsp;\u521b\u5efa\u4e8c\u7ef4\u7801\u5b9e\u4f8b\u5bf9\u8c61\uff0c\u5e76\u6dfb\u52a0\u6570\u636e\u8fdb\u884c\u751f\u6210\nconst&nbsp;qrCode&nbsp;=&nbsp;new&nbsp;QRCodeModel(-1,&nbsp;correctLevel);\nqrCode.addData(url);\nqrCode.make();\n\n\/\/&nbsp;\u6bcf\u4e2a\u65b9\u5411\u7684\u4e8c\u7ef4\u7801\u6570\u91cf\nconst&nbsp;nCount&nbsp;=&nbsp;qrCode.moduleCount;\n\/\/&nbsp;\u8ba1\u7b97\u6bcf\u4e2a\u4e8c\u7ef4\u7801\u65b9\u5757\u7684\u5927\u5c0f\nconst&nbsp;nSize&nbsp;=&nbsp;getRoundNum(rawViewportSize&nbsp;\/&nbsp;nCount,&nbsp;3)\n\/\/&nbsp;\u6bcf\u5757\u4e8c\u7ef4\u7801\u70b9\u7684\u5927\u5c0f\u6bd4\u4f8b\nconst&nbsp;dataScale&nbsp;=&nbsp;1;\n\/\/&nbsp;\u8ba1\u7b97\u51fadataScale\u4e0d\u4e3a1\u65f6\uff0c\u6bcf\u4e2a\u70b9\u7684\u504f\u79fb\u503c\nconst&nbsp;dataXyOffset&nbsp;=&nbsp;(1&nbsp;-&nbsp;dataScale)&nbsp;*&nbsp;0.5;\n\/\/&nbsp;\u5faa\u73af\u884c\u5217\u7ed8\u5236\u6570\u636e\u7801\u533a\nfor&nbsp;(let&nbsp;row&nbsp;=&nbsp;0;&nbsp;row&nbsp;=&nbsp;nCount&nbsp;-&nbsp;8))&nbsp;||&nbsp;(col&nbsp;&amp;gt;=&nbsp;nCount&nbsp;-&nbsp;8&nbsp;&amp;amp;&amp;amp;&nbsp;row&nbsp;=&nbsp;8&nbsp;&amp;amp;&amp;amp;&nbsp;col&nbsp;=&nbsp;8&nbsp;&amp;amp;&amp;amp;&nbsp;row&nbsp;&lt;p&gt;\u6b64\u65f6\u5df2\u7ecf\u7ed8\u5236\u51fa\u4e8c\u7ef4\u7801\u7684\u6570\u636e\u7801\u533a\uff1a&lt;\/p&gt;&lt;p&gt;&lt;img src=\"https:\/\/img.php.cn\/upload\/image\/103\/900\/786\/1641434416683001.png\" title=\"1641434416683001.png\" alt=\"5.png\"&gt;&lt;\/p&gt;&lt;p&gt;&lt;span   style=\"max-width:90%\"&gt;&lt;strong&gt;2.5 \u7ed8\u5236\u56fe\u5f62\u8bc6\u522b\u533a&lt;\/strong&gt;&lt;\/span&gt;&lt;\/p&gt;&lt;pre class=\"brush:js;toolbar:false;\"&gt;\/\/&nbsp;\u7ed8\u5236Position&nbsp;Detection&nbsp;Pattern\nctx.fillStyle&nbsp;=&nbsp;colorDark;\nctx.fillRect(0,&nbsp;0,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect((nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;0,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect(0,&nbsp;6&nbsp;*&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect((nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;6&nbsp;*&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect(0,&nbsp;(nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect(0,&nbsp;(nCount&nbsp;-&nbsp;7&nbsp;+&nbsp;6)&nbsp;*&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize,&nbsp;nSize);\nctx.fillRect(0,&nbsp;0,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect(6&nbsp;*&nbsp;nSize,&nbsp;0,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect((nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;0,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect((nCount&nbsp;-&nbsp;7&nbsp;+&nbsp;6)&nbsp;*&nbsp;nSize,&nbsp;0,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect(0,&nbsp;(nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect(6&nbsp;*&nbsp;nSize,&nbsp;(nCount&nbsp;-&nbsp;7)&nbsp;*&nbsp;nSize,&nbsp;nSize,&nbsp;7&nbsp;*&nbsp;nSize);\nctx.fillRect(2&nbsp;*&nbsp;nSize,&nbsp;2&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize);\nctx.fillRect((nCount&nbsp;-&nbsp;7&nbsp;+&nbsp;2)&nbsp;*&nbsp;nSize,&nbsp;2&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize);\nctx.fillRect(2&nbsp;*&nbsp;nSize,&nbsp;(nCount&nbsp;-&nbsp;7&nbsp;+&nbsp;2)&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize,&nbsp;3&nbsp;*&nbsp;nSize);\n\/\/&nbsp;\u7ed8\u5236Position&nbsp;Detection&nbsp;Pattern&nbsp;\u5b8c\u6bd5\n\n\/\/&nbsp;\u7ed8\u5236Timing&nbsp;Patterns\nconst&nbsp;timingScale&nbsp;=&nbsp;1;\nconst&nbsp;timingXyOffset&nbsp;=&nbsp;(1&nbsp;-&nbsp;timingScale)&nbsp;*&nbsp;0.5;\nfor&nbsp;(let&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;&lt;p&gt;\u8fd9\u65f6\u5019\uff0c\u4e00\u4e2a\u6734\u7d20\u7684\u4e8c\u7ef4\u7801\u5c31\u7ed8\u5236\u6210\u529f\u5566~&lt;\/p&gt;&lt;p&gt;&lt;img src=\"https:\/\/img.php.cn\/upload\/image\/301\/413\/586\/1641434422913735.png\" title=\"1641434422913735.png\" alt=\"6.png\"&gt;&lt;\/p&gt;&lt;blockquote&gt;\n&lt;p&gt;\u5177\u4f53\u4ee3\u7801\u8be6\u89c1\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u4ee3\u7801\u7247\u6bb5&lt;\/p&gt;\n&lt;p&gt;https:\/\/developers.weixin.qq.com\/s\/WHJj73mX7bwv&lt;\/p&gt;\n&lt;\/blockquote&gt;&lt;p&gt;\u8be5\u4ee3\u7801\u53ea\u662f\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u4e8c\u7ef4\u7801\u7684\u751f\u6210\u903b\u8f91\u3002\u82e5\u9700\u8981\u66f4\u590d\u6742\u7684\u4e8c\u7ef4\u7801\u5c55\u793a\u529f\u80fd\uff0c\u8fd8\u662f\u5efa\u8bae\u4f7f\u7528&lt;a href=\"https:\/\/github.com\/liuxdi\/wx-qr\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" ref=\"nofollow noopener noreferrer\"&gt;wx-qr&lt;\/a&gt;\u6216\u53c2\u8003\u91cc\u9762\u7684\u5177\u4f53\u4ee3\u7801\u3002\u6b22\u8fce\u5404\u4f4d\u63d0Issue\u548cStar~~&lt;\/p&gt;&lt;p&gt;\u3010\u76f8\u5173\u5b66\u4e60\u63a8\u8350\uff1a&lt;a href=\"https:\/\/www.php.cn\/xiaochengxu.html\" target=\"_blank\"&gt;\u5c0f\u7a0b\u5e8f\u5f00\u53d1\u6559\u7a0b&lt;\/a&gt;\u3011&lt;\/p&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u6765\u7ed8\u5236\u4e8c\u7ef4\u7801\uff1f\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>\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u5982\u4f55\u751f\u6210\u4e8c\u7ef4\u7801\uff1f\u4e0b\u9762\u672c\u7bc7\u7ed9\u5927\u5bb6\u4ecb\u7ecd\u4e00\u4e0b\u5229\u7528\u5c0f\u7a0b\u5e8f\u7684canvas\u80fd\u529b\u7ed8\u5236\u4e8c\u7ef4\u7801\u7684\u65b9\u6cd5\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01 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\u9996\u5148\u5728\u4f60\u6240\u5f00\u53d1\u7684\u5c0f\u7a0b\u5e8f\u6839\u76ee\u5f55&nbsp;app.json&nbsp;\u6216\u9700\u8981\u4f7f\u7528\u8be5\u7ec4\u4ef6\u7684&nbsp;xxx.json&nbsp;\u4e2d\u5f15\u7528\u7ec4\u4ef6 \uff08\u6ce8\u610f\uff1a\u8bf7\u4e0d\u8981\u5c06\u7ec4\u4ef6\u547d\u540d\u4e3a&nbsp;wx-xxx&nbsp;\u5f00\u5934\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u89e3\u6790 tag \u5931\u8d25 \uff09 { &nbsp;&nbsp;&#8220;usingComponents&#8221;:&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&#8220;qr-container&#8221;:&nbsp;&#8220;wx-qr&#8221; &nbsp;&nbsp;} } \u767b\u5f55\u540e\u590d\u5236 \u4e4b\u540e\u5c31\u53ef\u4ee5\u5728 wxml \u4e2d\u76f4\u63a5\u4f7f\u7528\u7ec4\u4ef6 &lt;qr-container&gt;&lt;\/qr-container&gt; \u767b\u5f55\u540e\u590d\u5236 Page({ &nbsp;&nbsp;&nbsp;&nbsp;data:&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;qrTxt:&nbsp;&#8216;https:\/\/github.com\/liuxdi\/wx-qr&#8217;, &nbsp;&nbsp;&nbsp;&nbsp;}, }); \u767b\u5f55\u540e\u590d\u5236 \u5f53\u7136\uff0c\u8fd8\u53ef\u4ee5\u652f\u6301\u5f88\u591a\u79cd\u914d\u7f6e\uff0c\u8be6\u89c1&nbsp;\u6216\u8005&nbsp;\u6587\u6863\u3002 2. \u65b9\u5f0f\u4e8c\uff1a\u57fa\u4e8eQRCode.js\u7ed3\u5408canvas\u7ed8\u5236 2.0 \u4e8c\u7ef4\u7801\u7684\u7ec4\u6210\u90e8\u5206 \u5b9a\u4f4d\u56fe\u6848Position Detection Pattern\u662f\u5b9a\u4f4d\u56fe\u6848\uff0c\u7528\u4e8e\u6807\u8bb0\u4e8c\u7ef4\u7801\u7684\u77e9\u5f62\u5927\u5c0f\u3002\u8fd9\u4e09\u4e2a\u5b9a\u4f4d\u56fe\u6848\u6709\u767d\u8fb9\u53ebSeparators for Postion Detection Patterns\u3002\u4e4b\u6240\u4ee5\u4e09\u4e2a\u800c\u4e0d\u662f\u56db\u4e2a\u610f\u601d\u5c31\u662f\u4e09\u4e2a\u5c31\u53ef\u4ee5\u6807\u8bc6\u4e00\u4e2a\u77e9\u5f62\u4e86\u3002Timing Patterns\u4e5f\u662f\u7528\u4e8e\u5b9a\u4f4d\u7684\u3002\u539f\u56e0\u662f\u4e8c\u7ef4\u7801\u670940\u79cd\u5c3a\u5bf8\uff0c\u5c3a\u5bf8\u8fc7\u5927\u4e86\u540e\u9700\u8981\u6709\u6839\u6807\u51c6\u7ebf\uff0c\u4e0d\u7136\u626b\u63cf\u7684\u65f6\u5019\u53ef\u80fd\u4f1a\u626b\u6b6a\u4e86\u3002Alignment Patterns \u53ea\u6709Version [&hellip;]<\/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-34189","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34189","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=34189"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34189\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}