pc端vue项目打开pdf文件；网页查看pdf文件；浏览器直接打开pdf文件

	//要求url是可以直接在地址栏打开的pdf地址
	//url = 'https://push-repair.zuihuibao.cn/ACHC00DE0421FP00359D.pdf?e=1629447429&token=vuxdWg0Cy8FEDKDawxk2AJ2Mq9guC8xVHBddeMpk:vLCjXt5DOOUAevOJlURN5epC1Cs='
    dlBkddPdf (url) {
      var a = document.createElement("a")
      a.setAttribute("href", url)
      a.setAttribute("target", "_blank")
      a.setAttribute("id", "openwin")
      document.body.appendChild(a)
      //if(!document.getElementById(id)) document.body.appendChild(a);
      a.click()
    },