fix Bug or esLink formatting

src/utils/downloadFile.ts

@@ -1,86 +1,75 @@
-/**
- * URL方式保存文件到本地
- * @param data 文件的blob数据
- * @param name 文件名
- */
-function saveAs(data, name) {
-    const urlObject = window.URL || window.webkitURL || window
-    const export_blob = new Blob([data])
-    const save_link = document.createElement('a')
-    save_link.href = urlObject.createObjectURL(export_blob)
-    save_link.download = name
-    save_link.click()
-    urlObject.revokeObjectURL(save_link.href)
-}
-
 /**
  * 根据文件url获取文件名
  * @param url 文件url
  */
 function getFileName(url) {
-    const num = url.lastIndexOf('/') + 1
-    let fileName = url.substring(num)
-    //把参数和文件名分割开
-    fileName = decodeURI(fileName.split('?')[0])
-    return fileName
+  const num = url.lastIndexOf('/') + 1;
+  let fileName = url.substring(num);
+  //把参数和文件名分割开
+  fileName = decodeURI(fileName.split('?')[0]);
+  return fileName;
 }
 
 /**
  * 根据文件地址下载文件
  * @param {*} sUrl
  */
-export function downloadByUrl({ url, target = '_blank', fileName }: {
-    url: string
-    target?: '_self' | '_blank'
-    fileName?: string
+export function downloadByUrl({
+  url,
+  target = '_blank',
+  fileName,
+}: {
+  url: string;
+  target?: '_self' | '_blank';
+  fileName?: string;
 }): Promise<boolean> {
-    // 是否同源
-    const isSameHost = new URL(url).host == location.host
-    return new Promise<boolean>((resolve, reject) => {
-        if (isSameHost) {
-            const link = document.createElement('a')
-            link.href = url
-            link.target = target
+  // 是否同源
+  const isSameHost = new URL(url).host == location.host;
+  return new Promise<boolean>((resolve, reject) => {
+    if (isSameHost) {
+      const link = document.createElement('a');
+      link.href = url;
+      link.target = target;
 
-            if (link.download !== undefined) {
-                link.download = fileName || getFileName(url)
-            }
+      if (link.download !== undefined) {
+        link.download = fileName || getFileName(url);
+      }
 
-            if (document.createEvent) {
-                const e = document.createEvent('MouseEvents')
-                e.initEvent('click', true, true)
-                link.dispatchEvent(e)
-                return resolve(true)
-            }
+      if (document.createEvent) {
+        const e = document.createEvent('MouseEvents');
+        e.initEvent('click', true, true);
+        link.dispatchEvent(e);
+        return resolve(true);
+      }
 
-            if (url.indexOf('?') === -1) {
-                url += '?download'
-            }
+      if (url.indexOf('?') === -1) {
+        url += '?download';
+      }
 
-            window.open(url, target)
-            return resolve(true)
-        } else {
-            const canvas = document.createElement('canvas')
-            const img = document.createElement('img')
-            img.setAttribute('crossOrigin', 'Anonymous')
-            img.src = url
-            img.onload = (e) => {
-                canvas.width = img.width
-                canvas.height = img.height
-                const context = canvas.getContext('2d')!
-                context.drawImage(img, 0, 0, img.width, img.height)
-                // window.navigator.msSaveBlob(canvas.msToBlob(),'image.jpg');
-                // saveAs(imageDataUrl, '附件');
-                canvas.toBlob((blob) => {
-                    const link = document.createElement('a')
-                    link.href = window.URL.createObjectURL(blob)
-                    link.download = getFileName(url)
-                    link.click()
-                    URL.revokeObjectURL(link.href)
-                    resolve(true)
-                }, 'image/jpeg')
-            }
-            img.onerror = (e) => reject(e)
-        }
-    })
+      window.open(url, target);
+      return resolve(true);
+    } else {
+      const canvas = document.createElement('canvas');
+      const img = document.createElement('img');
+      img.setAttribute('crossOrigin', 'Anonymous');
+      img.src = url;
+      img.onload = () => {
+        canvas.width = img.width;
+        canvas.height = img.height;
+        const context = canvas.getContext('2d')!;
+        context.drawImage(img, 0, 0, img.width, img.height);
+        // window.navigator.msSaveBlob(canvas.msToBlob(),'image.jpg');
+        // saveAs(imageDataUrl, '附件');
+        canvas.toBlob((blob) => {
+          const link = document.createElement('a');
+          link.href = window.URL.createObjectURL(blob);
+          link.download = getFileName(url);
+          link.click();
+          URL.revokeObjectURL(link.href);
+          resolve(true);
+        }, 'image/jpeg');
+      };
+      img.onerror = (e) => reject(e);
+    }
+  });
 }