Vue中如何实现在线预览word文件、excel文件

一、查看word

1.引用mammoth.js

（1）安装 npm install --save mammoth

npm install --save mammoth

（2）引入import mammoth from “mammoth”;

import mammoth from "mammoth";

2. 页面布局

<!-- word查看详情 -->
<div id="wordView" v-html="vHtml"/></div>

3. 请求URL显示数据

data() {
  return {
    vHtml: "",
    wordURL:''  //文件地址，看你对应怎末获取、赋值
  };
},
created() {
  // 具体函数调用位置根据情况而定
  this.readExcelFromRemoteFile(this.wordURL);
}
methods：{
    // 在线查看word文件
    readExcelFromRemoteFile: function (url) {
      var vm = this;
      var xhr = new XMLHttpRequest();
      xhr.open("get", url, true);
      xhr.responseType = "arraybuffer";
      xhr.onload = function () {
        if (xhr.status == 200) {
          mammoth
            .convertToHtml({ arrayBuffer: new Uint8Array(xhr.response) })
            .then(function (resultObject) {
              vm.$nextTick(() => {
                // document.querySelector("#wordView").innerHTML =
                //   resultObject.value;
                vm.vHtml = resultObject.value;
              });
            });
        }
      };
      xhr.send();
    },
}

二、查看Excel

1.引用sheetjs

（1）安装 npm install --save xlsx

npm install --save xlsx

（2）引入import XLSX from “xlsx”;

import XLSX from "xlsx";

2.页面布局

<!-- excel查看详情 -->
  <div id="table" v-if="!isWord">
    <el-table :data="excelData" style="width: 100%">
      <el-table-column
         v-for="(value, key, index) in excelData[2]"
         :key="index"
          :prop="key"
          :label="key"
      ></el-table-column>
     </el-table>
 </div>

3.请求URL显示数据

data() {
  return {
    excelData: [],
    workbook: {},
    excelURL: "", //文件地址，看你对应怎末获取、赋值
  };
},
created() {
  // 具体函数调用位置根据情况而定
  this.readWorkbookFromRemoteFile(this.wordURL);
}
methods：{
    // 在线查看excel文件
    readWorkbookFromRemoteFile: function (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" });
          console.log("workbook", workbook);
          var sheetNames = workbook.SheetNames; // 工作表名称集合
          _this.workbook = workbook;
          _this.getTable(sheetNames[0]);
        }
      };
      xhr.send();
    },
   getTable(sheetName) {
      console.log(sheetName);
      var worksheet = this.workbook.Sheets[sheetName];
      this.excelData = XLSX.utils.sheet_to_json(worksheet);
      console.log(this.excelData);
    },
}

三、项目应用：根据详情后缀分情况显示word、excel

1. 效果展示

场景说明：点击查看按钮，吊起弹框展示数据

2. 页面布局

<div :style="'border:1px dashed;width:100%;height:300px;overflow:scroll'">
  <!-- word查看详情 -->
  <div id="wordView" v-html="vHtml" v-if="isWord" />
  <!-- excel查看详情 -->
  <div id="table" v-if="!isWord">
     <el-table :data="excelData" style="width: 100%">
        <el-table-column
            v-for="(value, key, index) in excelData[2]"
            :key="index"
            :prop="key"
            :label="key"
         ></el-table-column>
     </el-table>
  </div>
  <!-- <div v-else></div> -->
</div>

3.调用函数展示数据

根据row中文件后缀判断使用哪种形式

data() {
  return {
    // 显示word excel
    vHtml: "",
    wordURL: "",
    isWord: "",
    fileType: "", // 1 word(.docx .doc) 2 excel(.xlsx .xsl) 3 其他()
    excelData: [],
    workbook: {},
    excelURL: "", //文件地址，看你对应怎末获取、赋值
  };
},
methods：{
   // 查看详情=列表操作
   // <el-button type="text" @click="handleDetail(scope.row)" v-if="!scope.row.havePassword">查看</el-button>
   handleDetail(row) {
      console.log(row, "查看row");
      this.tzOpen = true;
      this.detailForm = row;
      if (row.suffix === "docx" || row.suffix === "doc") {
        // this.fileType = 1;
        this.isWord = 1;
        // this.wordURL = row.url;
        this.readExcelFromRemoteFile(row.url);
      } else if (row.suffix === "xlsx" || row.suffix === "xls") {
        // this.fileType = 2;
        this.isWord = 0;
        // this.excelURL = row.url;
        this.readWorkbookFromRemoteFile(row.url);
      }
    },
// 在线查看excel文件
    readWorkbookFromRemoteFile: function (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" });
          console.log("workbook", workbook);
          var sheetNames = workbook.SheetNames; // 工作表名称集合
          _this.workbook = workbook;
          _this.getTable(sheetNames[0]);
        }
      };
      xhr.send();
    },
    // 在线查看word文件
    readExcelFromRemoteFile: function (url) {
      var vm = this;
      var xhr = new XMLHttpRequest();
      xhr.open("get", url, true);
      xhr.responseType = "arraybuffer";
      xhr.onload = function () {
        if (xhr.status == 200) {
          mammoth
            .convertToHtml({ arrayBuffer: new Uint8Array(xhr.response) })
            .then(function (resultObject) {
              vm.$nextTick(() => {
                // document.querySelector("#wordView").innerHTML =
                //   resultObject.value;
                vm.vHtml = resultObject.value;
              });
            });
        }
      };
      xhr.send();
    },
    getTable(sheetName) {
      console.log(sheetName);
      var worksheet = this.workbook.Sheets[sheetName];
      this.excelData = XLSX.utils.sheet_to_json(worksheet);
      console.log(this.excelData);
    },
}
#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: 100%;
  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;
  }
}