vue3 使用@vue-office/excel预览excel文件 demo

显示如下：

npm地址：https://www.npmjs.com/package/@vue-office/excel
@vue-office还有pdf和docx，按需下载对应插件

npm install @vue-office/excel vue-demi

vue代码如下

app.vue

<template>
  <div class="download">
      <h1>下载及回显相关</h1>
      <div class="box">
          <h2>vue-office / excel回显</h2>
          <input type="file" id="input"
              accept=".xls,.xlsx,.csv"
              ref="inputFileRef"
              @change="openExcelHandle"
              multiple
          />
          <el-table
              v-if="tableData.length"
              ref="tableRef"
              :data="tableData"
          >
              <el-table-column
                  label="文件名称"
                  prop="name"
                  align="left"
                  >
                  <template #default="scope">
                      {{ scope.row.name }}
                  </template>
              </el-table-column>
              <el-table-column label="文件大小" prop="size"/>
              <el-table-column label="最后修改时间" prop="lastModified" />
              <el-table-column label="预览">
                  <template #default="{ row }">
                      <el-button @click="singleReview(row)">预览</el-button>
                  </template>
              </el-table-column>
          </el-table>
      </div>
      <excel ref="excelReviewRef" :propsUrl="vueOfficeExcel"/>
  </div>
</template>

<script setup name="Download">
import { ref, reactive } from 'vue'
import Excel from './components/vueOfficeExcelReview.vue'

const excelReviewRef = ref(null)
let vueOfficeExcel = reactive({})
const inputFileRef = ref(null)
const tableData = ref([])

// el-input中change事件中的event只是文件地址
// input change事件中的event有file对象
function openExcelHandle(event) {
  for(let i = 0; i < event.target.files.length; i++) {
      tableData.value.push(event.target.files[i])
  }
}
function singleReview(row) {
  if (!row) {
      excelReviewRef.value.showHandle('', true)
      return
  }
  excelReviewRef.value.showHandle(row)
}


</script>

<style scoped>
.logo {
  height: 6em;
  padding: 1.5em;
  will-change: filter;
  transition: filter 300ms;
}
.logo:hover {
  filter: drop-shadow(0 0 2em #646cffaa);
}
.logo.vue:hover {
  filter: drop-shadow(0 0 2em #42b883aa);
}
</style>

vueofficeExcelReview.vue(主要页面)

<template>
    <div class="excel-review">
        <!-- 不使用dialog弹框是可以直接在页面下方显示的 -->
        <el-dialog
            v-model="visibility"
            :title="title"
            width="98%"
            :closeOnClickModal="false"
            :closeOnPressEscape="false"
            customClass="first-login-dialog"
            @close="closeHandle"
        >
            <VueOfficeExcel
                v-if="fileUrl"
                :src="fileUrl"
                @rendered="renderedHandler"
                @error="errorHandler"/>
        </el-dialog>
    </div>
</template>

<script setup>
import VueOfficeExcel from '@vue-office/excel'
import '@vue-office/excel/lib/index.css'
import { ref, reactive } from 'vue'

const visibility = ref(false)


const fileUrl = ref(null)
function renderedHandler() {
    console.log("渲染完成")
}
function errorHandler() {
    console.log("渲染失败")
}
let file = reactive({})
const title = ref('excel预览')
function showHandle(argFile) { // 下方使用的是arraybuffer的方式，
    file = argFile
    let fileReader = new FileReader()
    fileReader.readAsArrayBuffer(file)
    fileReader.onload =  (e) => {
        fileUrl.value = fileReader.result
    }
    title.value += file.name
    visibility.value = true
}
function closeHandle() {
    title.value = 'excel预览'
    fileUrl.value = null
    visibility.value = false
}
defineExpose({
    showHandle
})

</script>
<style lang="scss" scoped>
.excel-review {
    :deep(.el-dialog) {
        margin-top: 0;
        margin-bottom: 0;
        padding: 0;
        height: 100vh;
        .el-dialog__body {
            padding: 0;
            .vue-office-excel {
                height: calc(100vh - 60px);
            }
        }
    }
}
</style>