Excel导出（二进制方式）

<a-button
                class="mar_r10"
                icon="download"
                type="primary"
                @click="exportData"
              >
                导出
                </a-button>
methods:{
// 导出
    exportData (type) {
      // g_exportXlsform({headId: '82cde47f4aad4ca2973cb683b6a898c9',paramsStr: {}})
      // 获取导出数据
      this.$message.loading({ content: '导出中', key: 'updatable' });
      const paramsStr = JSON.stringify({})
      g_exportXlsform({ headId: '82cde47f4aad4ca2973cb683b6a898c9', paramsStr: { paramsStr: paramsStr } }).then((res) => {
        const data = res.data;
//----------------------------------重要部分start-------------------------------------------------
        if (!data || data.size === 0) {
          this.$message.warning('文件下载失败')
          return
        }
        if (typeof window.navigator.msSaveBlob !== 'undefined') {
          window.navigator.msSaveBlob(new Blob([data]), '采购订单' + '.xls')
        } else {
          const url = window.URL.createObjectURL(new Blob([data]))
          const link = document.createElement('a')
          link.style.display = 'none'
          link.href = url
          link.setAttribute('download', '采购订单' + '.xls')
          document.body.appendChild(link)
          link.click()
          document.body.removeChild(link) // 下载完成移除元素
          window.URL.revokeObjectURL(url) // 释放掉blob对象
        }
//----------------------------------重要部分end-------------------------------------------------
      })

    },
}