update 日常字符串校验 统一重构到 StringUtils 便于维护扩展

ruoyi-ui/src/utils/ossdownload.js

@@ -31,9 +31,11 @@ export function resolveBlob(res, mimeType) {
   var result = patt.exec(contentDisposition)
   var fileName = result[1]
   fileName = fileName.replace(/\"/g, '')
+  aLink.style.display = 'none'
   aLink.href = URL.createObjectURL(blob)
   aLink.setAttribute('download', decodeURI(fileName)) // 设置下载文件名称
   document.body.appendChild(aLink)
   aLink.click()
+  URL.revokeObjectURL(aLink.href);//清除引用
   document.body.removeChild(aLink);
 }