效果：

点击即可以下载打开。

代码：

                      <div v-show="item.attachment.length > 0">
                        <h3>下载附件</h3>
                        <div
                          v-for="(doc, docIndex) in item.attachment"
                          :key="docIndex"
                        >
                          <a
                            style="color: #4183c4"
                            :class="['file', docIndex == 0 ? 'firstFile' : '']"
                            @click="
                              fetchExportBill(
                                `${downloadUrl}?Id=${doc.fileId}`,
                                doc.disPlayName
                              )
                            "
                            :download="doc.disPlayName"
                          >
                            <file-zip-outlined
                              style="font-size: 14px; margin-right: 5px"
                            />{{ doc.disPlayName }}
                            <!-- <a-icon type="file-zip" style="font-size: 14px; margin-right: 5px" />{{ doc.disPlayName }} -->
                          </a>
                        </div>
                      </div>

 

 

const { downloadUrl } = window.defaultconfig;
function fetchExportBill(url, name) {
  axios.get(url, { responseType: "arraybuffer" }).then((res) => {
    const blob = new Blob([res.data], { type: "application/vnd.ms-excel" });
    const objectUrl = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.download = name;
    a.href = objectUrl;
    document.body.appendChild(a);
    a.click();
    document.body.removeChild(a);
  });
}