Merge pull request #2217 from dataease/pr@dev@fix_template-export

frontend/src/views/panel/list/PanelViewShow.vue

@@ -266,6 +266,7 @@ export default {
     downloadToTemplate() {
       const _this = this
       _this.dataLoading = true
+      try {
         _this.findStaticSource(function(staticResource) {
           html2canvas(document.getElementById('canvasInfoTemp')).then(canvas => {
             _this.dataLoading = false
@@ -285,16 +286,20 @@ export default {
             }
           })
         })
+      } catch (e) {
+        console.error(e)
+        _this.dataLoading = false
+      }
     },
     // 解析静态文件
     findStaticSource(callBack) {
       const staticResource = []
       // 系统背景文件
-      if (this.canvasStyleData.panel.imageUrl && this.canvasStyleData.panel.imageUrl.indexOf('static-resource') > -1) {
+      if (typeof this.canvasStyleData.panel.imageUrl === 'string' && this.canvasStyleData.panel.imageUrl.indexOf('static-resource') > -1) {
         staticResource.push(this.canvasStyleData.panel.imageUrl)
       }
       this.componentData.forEach(item => {
-        if (item.commonBackground && item.commonBackground.outerImage && item.commonBackground.outerImage.indexOf('static-resource') > -1) {
+        if (typeof item.commonBackground.outerImage === 'string' && item.commonBackground.outerImage.indexOf('static-resource') > -1) {
           staticResource.push(item.commonBackground.outerImage)
         }
       })
@@ -308,7 +313,9 @@ export default {
           callBack()
         }
       } else {
+        setTimeout(() => {
           callBack()
+        }, 0)
       }
     },