beforeUpload2(file) {
        /*if (file.type.indexOf('image/') == -1) {
          this.$modal.msgError('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。')
        } else if (file.size > 10 * 1024 * 1024) {
          this.$message.error('上传图片不能大于10M')
          return false
        } else {
          let formData = new FormData()
          formData.append('avatarfile', file)
          formData.append('id', this.form.id)
          formData.append('iutype', 1)
          imgUpload(formData).then(response => {
            if (response.code === 200) {
              this.imgUrls.iu2 = process.env.VUE_APP_BASE_API + response.imgUrl
              this.form.gPicUrl = response.imgUrl
              this.$modal.msgSuccess('修改成功')
            } else {
              this.$modal.msgError(response.msg)
            }
          })
        }*/
        const isJPG =
          file.type === "image/jpg" ||
          file.type === "image/jpeg" ||
          file.type === "image/png" ||
          file.type === "image/gif";
        const isLt2M = file.size / 1024 / 1024 < 10;
        if (!isJPG) {
          this.$message.error("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
        }
        if (!isLt2M) {
          this.$message.error("上传图片不能大于10M");
        }
        const isSize = new Promise(function(resolve, reject) {
          let width = 378;
          let height = 200;
          let _URL = window.URL || window.webkitURL;
          let image = new Image();
          image.onload = function() {
            let valid = image.width == width && image.height == height;
            valid ? resolve() : reject();
          };
          image.src = _URL.createObjectURL(file);
        }).then(
          () => {
            let formData = new FormData()
            formData.append('avatarfile', file)
            formData.append('id', this.form.id)
            formData.append('iutype', 1)
            imgUpload(formData).then(response => {
              if (response.code === 200) {
                this.imgUrls.iu2 = process.env.VUE_APP_BASE_API + response.imgUrl
                this.form.gPicUrl = response.imgUrl
                this.$modal.msgSuccess('修改成功')
              } else {
                this.$modal.msgError(response.msg)
              }
            })
            return file;
          },
          () => {
            this.$message.error("上传头像图片尺寸不符合,只能是378*200");
            return Promise.reject();
          }
        );
        return isJPG && isLt2M && isSize;
      },