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<template>
<div style="z-index: 1000; height: 75vh; overflow: auto;">
<img v-if="imgUrl" :src="imgUrl" alt="" style="width: 100%; height: 100%"/>
<!-- pdf和txt使用iframe -->
<pdf-view v-if="pdfUrl" v-model="pdfUrl" :fileName="fileName"></pdf-view>
<!--<iframe v-if="pdfUrl" :src="pdfUrl" frameborder="0" style="width: 100%; height: 100%; min-height: 100vh"></iframe>-->
<video v-if="videoUrl" :src="videoUrl" controls style="width: 100%; height: 100%; max-height: 800px"></video>
<div v-if="docFile" ref="word" style="height:100%">
<iframe v-if="fileUrl" :src="fileUrl" width='100%' height='100%' frameborder='1'></iframe>
</div>
<div v-if="docxFile">
<div ref="file"></div>
</div>
<div v-if="xlsFile" class="excel-view-container">
<!-- Excel使用tab选项卡来模拟表格里的sheet业 -->
<a-tabs type="card" v-if="sheetNames && sheetNames.length" @change="tabsClick">
<a-tab-pane v-for="(item, index) in sheetNames" :key="index" :tab="item">
<div id="excelView" v-html="excelView"></div>
</a-tab-pane>
</a-tabs>
</div>
</div>
</template>
<script>
import axios from 'axios'
import pdfView from '@/views/components/common/pdfView'
import { getFileExtension } from '@/views/utils/common'
//定义blob对应的type
const fileTypeMap = {
xls: 'application/vnd.ms-excel',
xlsx: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
doc: 'application/msword',
docx: 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
pdf: 'application/pdf',
ppt: 'application/pdf',
pptx: 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
png: 'image/png',
gif: 'image/gif',
jpeg: 'image/jpeg',
jpg: 'image/jpeg',
txt: 'text/plain',
};
export default {
name: 'previewFile',
props: {
value: {
type: String,
default() {
return null
},
},
fileName: {
type: String,
default() {
return null
}
}
},
components: {
pdfView
},
data() {
return {
fileType: '', //文件类型
data: '', //文件路径，blob 类型
imgUrl: '', //图片路径
pdfUrl: '', //pdf路径
videoUrl: '', //视频路径
excelView: '', //表格转换后的html数据
docFile: false, //是否是老版word文件(doc)
docxFile: false, //是否是新版word文件(docx)
xlsFile: false, //是否是Excel文件
execlArraybufferData: null, //Excelblob转换为arraybuff数据
sheetNames: null, //从数据中获取到的sheet页数组
imgType: [ 'bmp','jpg','jpeg','png','tif','gif','pcx','tga','exif','fpx','svg','psd','cdr','pcd','dxf','ufo','eps','ai','raw','WMF','webp','avif','apng' ],
videoType: [ 'wmv','asf','asx','rm','rmvb','mp4','3gp','mov','m4v','avi','dat','mkv','flv','vob' ],
wordType: [ 'text','pdf','doc','docx','xls','xlsx','ppt','pptx','rar','zip','7z','apz','ar','bz','car','dar','cpgz','f','ha','hbc','hbc2','hbe','hpk','hyp' ],
fileUrl: '',
previewAnnex: false,
previewUrl: '',
previewType: '',
fileData: null
}
},
mounted() {
this.coverUrl()
},
methods: {
// 预览文件
filePreviewPDF() {
this.fileType = this.previewType
if (this.imgType.includes(this.fileType)) {
// 图片类型的
this.imgUrl = window.URL.createObjectURL(this.data)
} else if (this.videoType.includes(this.fileType)) {
// 视频类型的
this.videoUrl = window.URL.createObjectURL(this.data)
} else if (this.fileType == 'pdf' || this.fileType == 'txt') {
// pdf和文本类型的，用iframe打开
this.pdfUrl = this.previewUrl//window.URL.createObjectURL(this.data)
} else if (this.fileType == 'doc') {
this.docFile = true
this.fileUrl = 'https://view.officeapps.live.com/op/view.aspx?src=' + location.origin + this.value
} else if (this.fileType == 'docx') {
// word类型的用docx-preview插件
this.docxFile = true
axios.request({
method: 'GET',
url: this.previewUrl,
responseType: 'arraybuffer',
}).then((res) => {
if (res) {
let docx = require('docx-preview')
docx.renderAsync(res.data, this.$refs.file)
} else {
this.$message.error('数据接口请求失败！')
}
})
} else if (this.fileType == 'xls' || this.fileType == 'xlsx') {
// 表格类型的用xlsx插件
this.xlsFile = true
axios.request({
method: 'GET',
url: this.previewUrl,
responseType: 'blob',
headers: {
"Content-Type": "application/vnd.ms-excel;application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
},
}).then((res) => {
if (res) {
let reader = new FileReader()
reader.readAsArrayBuffer(res.data) // blob类型转换为ArrayBuffer类型
this.tabChange(0, reader)
} else {
this.$message.error('数据接口请求失败！')
}
})
} else {
//this.handleClose();
this.$message.error('不支持此文件预览')
}
},
tabChange(index, reader) {
this.excelView = ''
let XLSX = require('xlsx')
let _this = this
// 如果第一次进来
if (!this.sheetNames) {
// 文件转换加载完成后
reader.onload = function () {
let arraybufferData = this.result
this.execlArraybufferData = arraybufferData
let data = new Uint8Array(arraybufferData) // es2017的方法
let workbook = XLSX.read(data, { type: 'array' }) // 得到表格的array数据
_this.workbooks = workbook // 赋值到此组件最外面，一会要用
let sheetNames = workbook.SheetNames // 得到execl工作表名称集合，结果类似这样['sheet1','sheet2']
_this.sheetNames = sheetNames // 赋值到此组件最外面，一会要用
let worksheet = workbook.Sheets[sheetNames[index]] // 获取第几个工作表0就是'sheet1'，以此类推
_this['excelView'] = XLSX.utils.sheet_to_html(worksheet) // 把表格的array数据转换成html数据
_this.$nextTick(function () {
// DOM加载完毕后执行，解决HTMLConnection有内容但是length为0问题。
_this.setStyle4ExcelHtml()
})
}
} else {
// 已经有数据了的时候直接获取对应sheet里的内容
let worksheet = this.workbooks.Sheets[this.sheetNames[index]]
this['excelView'] = XLSX.utils.sheet_to_html(worksheet)
this.$nextTick(function () {
// DOM加载完毕后执行，解决HTMLConnection有内容但是length为0问题。
this.setStyle4ExcelHtml()
})
}
},
// 设置Excel转成HTML后的样式
setStyle4ExcelHtml() {
const excelViewDOM = document.getElementById('excelView')
if (excelViewDOM) {
const excelViewTDNodes = excelViewDOM.getElementsByTagName('td') // 获取的是HTMLConnection
if (excelViewTDNodes) {
const excelViewTDArr = Array.prototype.slice.call(excelViewTDNodes)
for (const i in excelViewTDArr) {
const id = excelViewTDArr[i].id // 默认生成的id格式为sjs-A1、sjs-A2......
if (id) {
const idNum = id.replace(/[^0-9]/gi, '') // 提取id中的数字，即行号
if (idNum && (idNum === '1' || idNum === 1)) {
// 第一行标题行
excelViewTDArr[i].classList.add('class4Title')
}
if (idNum && (idNum === '1' || idNum === 1)) {
// 第二行表头行
excelViewTDArr[i].classList.add('class4TableTh')
}
}
}
}
}
},
tabsClick (key) {
this.tabChange(key)
},
//文件预览判断
coverUrl () {
var type = getFileExtension(this.fileName)
this.previewType = type
this.previewUrl = this.value
this.previewAnnex = true
this.filePreviewPDF()
return Promise.resolve()
},
},
watch: {
previewType: {
handler(value) {
this.fileType = value
},
immediate: true, // 重点
deep: true, // 重点
},
previewUrl: {
handler(value) {
this.data = value
},
immediate: true, // 重点
deep: true, // 重点
},
},
};
</script>
<style lang="less" scoped="">
::v-deep table {
width: 100% !important;
border-collapse: collapse !important;
border-spacing: 0 !important;
text-align: center !important;
border: 0px !important;
overflow-x: auto !important;
}
::v-deep table tr td {
border: 2px solid gray !important;
width: 300px !important;
height: 33px !important;
}
/**整体样式 */
::v-deep .excel-view-container {
background-color: #ffffff;
}
/**标题样式 */
::v-deep .class4Title {
font-size: 22px !important;
font-weight: bold !important;
padding: 10px !important;
}
/**表格表头样式 */
::v-deep .class4TableTh {
/* font-size: 14px !important; */
font-weight: bold !important;
padding: 2px !important;
background-color: #ccc !important;
}
</style>