a href标签下载文件遇到下载失败 打开文件的问题

<a href="/images/logo.png" download="下载资源名称">

点击并拖拽以移动
...
downloadFile(url, fileName) {
    var x = new XMLHttpRequest();
    x.open("GET", url, true);
    x.responseType = ‘blob‘;
    x.onload=function(e) {
        var url = window.URL.createObjectURL(x.response)
        var a = document.createElement(‘a‘);
        a.href = url
        a.download = fileName;
        a.click()
    }
    x.send();
},
...

//图片下载-不同源图片的下载 imgsrc地址 name图片名字
downloadIamge(imgsrc, name) {
  var image = new Image();
  // 解决跨域 Canvas 污染问题
  image.setAttribute("crossOrigin", "anonymous");
  image.onload = function() {
    var canvas = document.createElement("canvas");
    canvas.width = image.width;
    canvas.height = image.height;
    var context = canvas.getContext("2d");
    context.drawImage(image, 0, 0, image.width, image.height);
    var url = canvas.toDataURL("image/png"); //得到图片的base64编码数据
  
    var a = document.createElement("a"); // 生成一个a元素
    var event = new MouseEvent("click"); // 创建一个单击事件
    a.download = name || "photo"; // 设置图片名称
    a.href = url; // 将生成的URL设置为a.href属性
    a.dispatchEvent(event); // 触发a的单击事件
  };
  image.src = imgsrc;
},