vue在线预览word、excel、pdf、txt、图片的方法实例

<div id="wordView" v-html="vHtml"/></div>

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();
},
}

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

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);
},
}

<el-dialog
title="预览"
append-to-body
:visible.sync="dialog.dialogVisible"
>
<div :class="[checkClass]" class="check" />
<div v-if="dialog.isPdf" v-loading="iframeLoading" class="pdfClass">
<iframe
:src="https://www.jb51.net/article/dialog.src"
type="application/x-google-chrome-pdf"
/>
</div>
<!-- <div v-else-if="dialog.isExcel" class="excelClass" v-html="excelHtml" /> -->
<div v-else-if="dialog.isExcel">
<el-table
:data="excelData"
border
stripe
:header-cell-style="{'background':'#F5F4F7'}"
>
<el-table-column
type="index"
label="序号"
width="60"
:resizable="false"
align="center"
/>
<el-table-column
v-for="(value, key, index) in excelData[0]"
:key="index"
:prop="key"
:label="key"
/>
</el-table>
</div>
<div v-else-if="dialog.isWord" class="wordClass" v-html="wordHtml" />
<div v-else class="imgfile">
<img
:src="https://www.jb51.net/article/dialog.src"
alt=""
>
</div>
</el-dialog>

<script>
import { uploadFile, downloadFileByUniq, downloadFileByFileNames, downloadFileByUniq2 } from '@/base/api/common/'
import XLSX from 'xlsx'
import mammoth from 'mammoth'
export default {
data() {
return {
excelHtml: '',
wordHtml: '',
excelData: [],
　　　　dialog: {
dialogVisible: false,
src: '',
isPdf: false,
isExcel: false,
isWord: false
},
}
methods: {
// 预览
previewFn(item) {
if (!(item.url.includes('.png') || item.url.includes('.jpg') || item.url.includes('.jpeg') || item.url.includes('.bmp') || item.url.includes('.JPG') || item.url.includes('.PNG') || item.url.includes('.JPEG') || item.url.includes('.BMP') || item.url.includes('.pdf') || item.url.includes('.txt') || item.url.includes('.xls') || item.url.includes('.doc'))) {
this.$message.error('文件类型不支持预览')
return false
}
if (item.url.includes('.pdf') || item.url.includes('.txt')) {
this.dialog.isPdf = true
this.dialog.isExcel = false
this.dialog.isWord = false
this.dialog.src = ''
this.iframeLoading = true
downloadFileByUniq(
encodeURIComponent(item.url)
).then(res => {
const blob = new Blob([res], { type: item.url.includes('.pdf') ? 'application/pdf;' : '' })
const href = window.URL.createObjectURL(blob)
this.dialog.src = href
}).finally(() => {
this.iframeLoading = false
})
} else if (item.url.includes('.xls')) {
this.dialog.isExcel = true
this.dialog.isWord = false
this.dialog.isPdf = false
downloadFileByUniq2(
encodeURIComponent(item.url)
).then(data => {
const workbook = XLSX.read(new Uint8Array(data), { type: 'array' }) // 解析数据
var worksheet = workbook.Sheets[workbook.SheetNames[0]] // workbook.SheetNames 下存的是该文件每个工作表名字,这里取出第一个工作表
// this.excelHtml = XLSX.utils.sheet_to_html(worksheet) // 渲染成html
const sheet2JSONOpts = {
/** Default value for null/undefined values */
defval: ''// 给defval赋值为空的字符串,不然没值的这列就不显示
}
// 渲染成json
this.excelData = XLSX.utils.sheet_to_json(worksheet, sheet2JSONOpts)
console.log(this.excelData)
})
} else if (item.url.includes('.doc')) {
var vm = this
this.dialog.isWord = true
this.dialog.isExcel = false
this.dialog.isPdf = false
downloadFileByUniq2(
encodeURIComponent(item.url)
).then(data => {
mammoth.convertToHtml({ arrayBuffer: new Uint8Array(data) })
.then(function(resultObject) {
vm.$nextTick(() => {
vm.wordHtml = resultObject.value
})
})
})
} else {
this.dialog.isPdf = false
this.dialog.isExcel = false
this.dialog.isWord = false
this.dialog.src = item.downloadUrl
}
this.dialog.dialogVisible = true
this.checkClass = 'check' + item.intinvoicestatus
},}

<template>
<div class="excel-container">
<van-nav-bar
left-text="返回"
title="word查看"
left-arrow
:fixed="true"
:placeholder="true"
@click-left="back"
/>
<div ref="docPreview"></div>
</div>
</template>

<script>
import mammoth from 'mammoth'
import AlloyFinger from "../../../static/js/alloyfinger.js";
import transform from "../../../static/js/transform.js";
import To from "../../../static/js/to.js";
export default {
data () {
return {
id: '',
url:"",// excel文件地址
goPath: '',       //将要去的界面
}
},
beforeRouteEnter (to, from, next) { //监听从哪个页面过来
let path = from.fullPath;
next(vm => vm.setPath(path));
},
created(){
this.getParams()
},
mounted () {
this.previewFile();
this.getData();
},
methods: {
setPath(path) {
this.goPath = path.split("/")[1];
},
//返回键
back() {
this.$router.push({
name: this.goPath,
params: {
id: this.id
}
})
},
getParams() {
// 取到路由带过来的参数
let routerParams = this.$route.params.id
// 将数据放在当前组件的数据内
this.id = routerParams
this.url = this.$route.params.url
},
previewFile() {
let _this=this;
try {
var xhr = new XMLHttpRequest();
xhr.open("GET", this.url);
xhr.responseType = "arraybuffer";
xhr.onload = function(e) {
var arrayBuffer = xhr.response; //arrayBuffer
mammoth
.convertToHtml({ arrayBuffer: arrayBuffer })
.then(displayResult)
.done();
function displayResult(result) {
_this.$refs.docPreview.innerHTML = result.value || "";
}
};
xhr.send();
} catch (e) {
console.log(e);
_this.$emit("errorPreview");
}
},
getData() {
let that = this;
let element = that.$refs.docPreview;
Transform(element);
var initScale = 1;
this.af = new AlloyFinger(element, {
// rotate: function (evt) {  //实现旋转
//   element.rotateZ += evt.angle;
// },
multipointStart: function () {
initScale = element.scaleX;
},
pinch: function (evt) {   //实现缩放
element.scaleX = element.scaleY = initScale * evt.zoom;
},
pressMove: function (evt) {   //实现移动
element.translateX += evt.deltaX;
element.translateY += evt.deltaY;
evt.preventDefault();
},
});
},
}
}
</script>