图片懒加载

src/saas/AppCountryAlbum/Watermark.vue

@@ -181,7 +181,7 @@
         this.albumId = query.albumId
       }
 
-      this.img = query.url
+      this.img = decodeURIComponent(query.url)
       this.height = uni.getSystemInfoSync().windowHeight
 
       this.getLocation()
@@ -248,11 +248,10 @@
         this.$nextTick(() => {
           html2canvas(this.$refs.waterMarker, {
             allowTaint: true,
-            useCORS: true,
-            dpi: 300
+            useCORS: true
           }).then((canvas) => {
-            let dataURL = canvas.toDataURL('image/png')
-            const file = this.dataURLtoFile(dataURL, 'photo.png')
+            let dataURL = canvas.toDataURL('image/jpg')
+            const file = this.dataURLtoFile(dataURL, 'photo.jpg')
             let formData = new FormData()
             formData.append('file', file)
             this.$http.post('/admin/file/add2?type=image', formData).then(res => {