更换贺报下载的方法2

src/views/ebiz/generateImg/generateImg.vue

@@ -222,43 +222,21 @@ export default {
       captureAndProcessImage();
     },
     downloadFn() {
-      const clientWidth = this.$refs.generateImg.offsetWidth;//获取容易的宽高
+      const clientWidth = this.$refs.generateImg.offsetWidth;
       const clientHeight = this.$refs.generateImg.offsetHeight;
-      let canvas = document.createElement("canvas");//创建Canvas对象
+      const kh = [clientWidth, clientHeight];
-      var scale = 2;//用于渲染的比例。默认为浏览器设备像素比率
+
-      canvas.width = clientWidth * scale;
+      html2canvas(this.$refs.generateImg, { useCORS: true, logging: true }).then((canvas) => {
-      canvas.height = clientHeight * scale;
+        const dataURL = canvas.toDataURL('image/png');
-      const ops = {
+        this.download(dataURL, kh);
-        
-        width: clientWidth,//画布的宽度
-        height: clientHeight,//画布的高度
-        // 跨域配置
-        useCORS: true, // 使用跨域
-        allowTaint: true, // 允许使用跨域资源
-        tainTest: false,
-        scale: scale,
-        backgroundColor: null,
-      };
-      html2canvas(this.$refs.generateImg, ops).then((canvas) => {
-        // 转成图片，生成图片地址
-        this.imgUrl = canvas.toDataURL("image/png");
-        this.download(this.imgUrl, [canvas.width, canvas.height]);
-      });
-    },
-    download(imgUrl, kh) {
-      this.getUrlBase64(imgUrl, kh).then((base64) => {
-        const link = document.createElement("a");
-        link.href = base64;
-        link.download = `图片.png`;
-        link.click();
       });
     },
     getUrlBase64(url, kh) {
       return new Promise((resolve) => {
-        let canvas = document.createElement("canvas");
+        let canvas = document.createElement('canvas');
-        const ctx = canvas.getContext("2d");
+        const ctx = canvas.getContext('2d');
         const img = new Image();
-        img.crossOrigin = "Anonymous"; // 允许跨域
+        img.crossOrigin = 'Anonymous'; // 允许跨域
         img.src = url;
         img.onload = () => {
           // eslint-disable-next-line prefer-destructuring
@@ -266,13 +244,21 @@ export default {
           // eslint-disable-next-line prefer-destructuring
           canvas.width = kh[0];
           ctx.drawImage(img, 0, 0, kh[0], kh[1]);
-          const dataURL = canvas.toDataURL("image/png");
+          const dataURL = canvas.toDataURL('image/png');
           canvas = null;
           resolve(dataURL);
-          this.$toast('下载成功')
         };
       });
     },
+    download(imgUrl, kh) {
+      this.getUrlBase64(imgUrl, kh).then((base64) => {
+        const link = document.createElement('a');
+        link.href = base64;
+        link.download = `业绩贺报.png`;
+        link.click();
+        this.$toast('下载成功')
+      });
+    },
     close() {
       this.$emit('child-colse', '1')
       this.$refs.generateImg.src = '';