Vue项目要在内网环境进行预览，pdf可以直接使用浏览器自带的方式进行预览，但是word和excel需要借助插件，预览本地文件，或者是内网文件，可以使用以下方法进行预览：

Word: docx-preview

Excel: SheetJS

PDF：vue-pdf

txt: iframe

word预览

安装依赖

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npm i docx-preview@0.1.4
npm i jszip

预览在线地址文件

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<template>
  <div class="home">
    <div ref="file"></div>
  </div>
</template>

<script>
import axios from 'axios'
const docx = require('docx-preview')

// 如果 docx-preview 版本比较新需要 es6 导出
// import { renderAsync } from 'docx-preview'

window.JSZip = require('jszip')
export default {
  mounted(){
    axios({
      method: 'get',
      responseType: 'blob', // 设置响应文件格式
      url: '/docx',
    }).then(({data}) => {
      docx.renderAsync(data,this.$refs.file) // 渲染到页面预览
    })
  }
}
</script>

预览本地文件

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<template>
  <div class="my-component" ref="preview">
    <input type="file" @change="preview" ref="file">
  </div>
</template>

<script>
const docx = require('docx-preview');
window.JSZip = require('jszip')
export default {
  methods: {
    preview(e){
      docx.renderAsync(this.$refs.file.files[0],this.$refs.preview) // 渲染到页面预览
    }
  }
}
</script>

<style>
.my-component{
  width: 100%;
  height: 90vh;
  border: 1px solid #000;
}
</style>

excel预览

安装依赖

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npm install --save xlsx

excel.vue

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<template>
  <div id="table">
    <el-table :data="tableData" style="width: 100%">
      <el-table-column
        v-for="(key,index) in tableHeader"
        :key="index"
        :prop="key"
        :label="key"
      ></el-table-column>
    </el-table>
  </div>
</template>

<script>
import XLSX from 'xlsx'
export default {
  data() {
    return {
      tableData: [],
      tableHeader: [],
      workbook: {},
      excelURL: '',
    }
  },
  mounted() {
    this.excelURL = this.$route.query.excelURL
    this.readWorkbookFromRemoteFile(this.excelURL)
  },
  methods: {
    readWorkbookFromRemoteFile(url) {
      var xhr = new XMLHttpRequest()
      xhr.open('get', url, true)
      xhr.responseType = 'arraybuffer'
      let _this = this
      xhr.onload = function(e) {
        if (xhr.status === 200) {
          var data = new Uint8Array(xhr.response)
          var workbook = XLSX.read(data, { type: 'array' })

          var sheetNames = workbook.SheetNames; // 工作表名称集合
          _this.workbook = workbook;
          _this.getTable(sheetNames[0])
        }
      };
      xhr.send()
    },
    getTable(sheetName) {
      var worksheet = this.workbook.Sheets[sheetName]
      this.tableData = XLSX.utils.sheet_to_json(worksheet)

      this.tableHeader = []
      if (this.tableData.length > 0) {
        for (var i in this.tableData[0]) {
          this.tableHeader.push(i)
        }
      }
    }
  }
}
</script>

<style scoped>
#table {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #2c3e50;
  margin-top: 60px;
  border: 1px solid #ebebeb;
  padding: 20px;
  width: 80%;
  margin: 20px auto;
  border-shadow: 0 0 8px 0 rgba(232, 237, 250, 0.6), 0 2px 4px 0 rgba(232, 237, 250, 0.5);
  border-radius: 10px;
  overflow: scroll;
  height: 100%;

  .tab {
    margin: 0 0 20px 0;
    display: flex;
    flex-direction: row;
  }
}
</style>

<style scoped>
.is-active {
  background-color: #409eff;
}
span {
  background-color: red;
}
</style>

pdf预览

安装依赖

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npm install --save vue-pdf

pdf.vue

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<template>
  <div>
    <pdf ref="pdf" :src="pdfUrl" style="width:100%;" />
  </div>
</template>
<script>
import pdf from 'vue-pdf'
export default {
  data() {
    return: {
      pdfUrl: '',
    }
  }
  created() {
    const path = 'test.pdf'// 你获取到的pdf路径
    // pdf.createLoadingTask解决文件件跨域问题
    this.pdfUrl = pdf.createLoadingTask(path)
  }
}
</script>

txt预览

txt.vue

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<template>
  <iframe :src="fileurl" frameborder="0" width="100%" height="600" />
</template>