html代码段：

<input type="file"  @change.prevent.stop="upload">

vue 中script代码段：

data() {
    fileName: ''
},
methods: {
    upload(event) {
        let files = event.target.files[0];
        this.fileName = this.getObjectUrl(files);
    },
    getObjectUrl(file) {
      let url = null;
      if (window.createObjectURL != undefined) {
        // basic
        url = window.createObjectURL(file);
      } else if (window.webkitURL != undefined) {
        // webkit or chrome
        url = window.webkitURL.createObjectURL(file);
      } else if (window.URL != undefined) {
        // mozilla(firefox)
        url = window.URL.createObjectURL(file);
      }
      return url;
    }
}