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@@ -1,60 +1,59 @@
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-const fsm = wx.getFileSystemManager();
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-const FILE_BASE_NAME = 'tmp_base64src'; //自定义文件名
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+const fsm = wx.getFileSystemManager()
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+const FILE_BASE_NAME = 'tmp_base64src' //自定义文件名
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-export const base64src = function(base64data, cb) {
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- const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || [];
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+export const base64src = function (base64data, cb) {
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+ const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || []
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if (!format) {
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- return (new Error('ERROR_BASE64SRC_PARSE'));
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+ return new Error('ERROR_BASE64SRC_PARSE')
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}
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- const filePath = `${wx.env.USER_DATA_PATH}/${FILE_BASE_NAME}.${format}`;
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- const buffer = wx.base64ToArrayBuffer(bodyData);
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+ const filePath = `${wx.env.USER_DATA_PATH}/${FILE_BASE_NAME}.${format}`
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+ const buffer = wx.base64ToArrayBuffer(bodyData)
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fsm.writeFile({
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filePath,
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data: buffer,
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encoding: 'binary',
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success() {
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- cb(filePath);
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+ cb(filePath)
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},
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fail() {
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- return (new Error('ERROR_BASE64SRC_WRITE'));
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- },
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- });
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-};
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+ return new Error('ERROR_BASE64SRC_WRITE')
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+ }
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+ })
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+}
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-export const toBase64src = function(imageUrl) {
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+export const toBase64src = function (imageUrl) {
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return new Promise((resolve, reject) => {
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// 创建一个新的Image对象
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- var img = new Image();
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+ var img = new Image()
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// 设置图片加载完成时的回调函数
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- img.onload = function() {
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+ img.onload = function () {
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// 创建一个Canvas元素
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- var canvas = document.createElement('canvas');
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- canvas.width = img.width;
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- canvas.height = img.height;
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+ var canvas = document.createElement('canvas')
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+ canvas.width = img.width
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+ canvas.height = img.height
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// 获取2D上下文
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- var ctx = canvas.getContext('2d');
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+ var ctx = canvas.getContext('2d')
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// 在Canvas上绘制图片
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- ctx.drawImage(img, 0, 0, img.width, img.height);
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+ ctx.drawImage(img, 0, 0, img.width, img.height)
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// 将Canvas内容转换为Base64编码
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- var base64String = canvas.toDataURL('image/jpeg'); // 您可以根据需要选择不同的图片格式
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+ var base64String = canvas.toDataURL('image/jpeg') // 您可以根据需要选择不同的图片格式
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// 在此处使用 base64String，例如将其用于<img>标签的src属性
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- resolve(base64String);
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- };
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+ resolve(base64String)
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+ }
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// 设置图片源
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- img.setAttribute('crossOrigin', 'anonymous');
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+ img.setAttribute('crossOrigin', 'anonymous')
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// img.crossOrigin = 'Anonymous';
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- img.src = imageUrl;
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-
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+ img.src = imageUrl
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})
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-};
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+}
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export default {
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- base64src,
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+ base64src,
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toBase64src
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}
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linwenxin