Penyelesaian kepada kehilangan gaya pencetakan reaksi: 1. Pasang jspdf melalui arahan "npm install --save html2canvas npm install jspdf --save" 2. Gunakan jspdf untuk menukar div yang perlu dicetak pdf; 3. Hanya gunakan reaksi untuk mencetak semula.
Persekitaran pengendalian tutorial ini: sistem Windows 10, versi react18, komputer Dell G3.
Apakah yang perlu saya lakukan jika gaya cetakan tindak balas hilang?
gaya div cetakan cetak vue hilang (react universal)
Menggunakan pemalam print.js dalam talian, cetakan mendapati gaya itu hilang.
Penyelesaian> Tukar html kepada pdf, dan kemudian cetak pdf
Gunakan jspdf untuk menukar div yang perlu dicetak kepada pdf (gaya pdf yang ditukar tidak akan hilang, kerana pdf.js ialah Tukar div kepada kanvas)
Pasang jspdf
npm install --save html2canvas
Salin selepas log masuk
npm install jspdf --save
Salin selepas log masuk
Salin kod
utli.js terus, dan perhatikan kaedah outPutPdf untuk memasukkan parameter
import html2canvas from 'html2canvas';
import jsPDF from 'jspdf';
// base64转blob
export function toBlob(base64Data) {
let byteString = base64Data
if (base64Data.split(',')[0].indexOf('base64') >= 0) {
byteString = atob(base64Data.split(',')[1]); // base64 解码
} else {
byteString = unescape(base64Data.split(',')[1]);
}
// 获取文件类型
const mimeString = base64Data.split(';')[0].split(":")[1]; // mime类型
// ArrayBuffer 对象用来表示通用的、固定长度的原始二进制数据缓冲区
// let arrayBuffer = new ArrayBuffer(byteString.length) // 创建缓冲数组
// let uintArr = new Uint8Array(arrayBuffer) // 创建视图
const uintArr = new Uint8Array(byteString.length); // 创建视图
for (let i = 0; i < byteString.length; i += 1) {
uintArr[i] = byteString.charCodeAt(i);
}
// 生成blob
const blob = new Blob([uintArr], {
type: mimeString
})
// 使用 Blob 创建一个指向类型化数组的URL, URL.createObjectURL是new Blob文件的方法,可以生成一个普通的url,可以直接使用,比如用在img.src上
return blob;
};
/**
* 输出pdf
* @param {*} idName html元素
* @param {*} pdfName 输出pdf文件名
* @param {*} isDownload 是否直接下载
* @param {*} isPrint 是否直接打印
* @param {*} callback 执行后的回调
*/
export function outPutPdf(idName, pdfName, isDownload = false, isPrint = false, callback) {
const element = document.getElementById(idName); // 这个dom元素是要导出的pdf的div容器
const w = element.offsetWidth; // 获得该容器的宽
const h = element.offsetHeight; // 获得该容器的高
const offsetTop = element.offsetTop; // 获得该容器到文档顶部的距离
const offsetLeft = element.offsetLeft; // 获得该容器到文档最左的距离
const canvas = document.createElement("canvas");
let abs = 0;
const winI = document.body.clientWidth; // 获得当前可视窗口的宽度（不包含滚动条）
const winO = window.innerWidth; // 获得当前窗口的宽度（包含滚动条）
if (winO > winI) {
abs = (winO - winI) / 2; // 获得滚动条宽度的一半
}
canvas.width = w * 2; // 将画布宽&&高放大两倍
canvas.height = h * 2;
const context = canvas.getContext('2d');
context.scale(2, 2);
context.translate(-offsetLeft - abs, -offsetTop);
// 这里默认横向没有滚动条的情况，因为offset.left()，有无滚动条的时候存在差值，因此translate的时候，要把这个差值去掉
html2canvas(element, {
useCORS: true, // 允许加载跨域的图片
allowTaint: true,
scale: 2 // 提升画面质量，但是会增加文件大小
}).then(cs => {
const contentWidth = cs.width;
const contentHeight = cs.height;
// 一页pdf显示html页面生成的canvas高度
const pageHeight = contentWidth / 592.28 * 841.89;
// 未生成pdf的html页面高度
let leftHeight = contentHeight;
// 页面偏移
let position = 0;
// a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高
const imgWidth = 595.28;
const imgHeight = 592.28 / contentWidth * contentHeight;
const pageDate = cs.toDataURL('image/jpeg', 1.0);
const pdf = new jsPDF('', 'pt', 'a4');
// 有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面的高度（841.89）
// 当内容未超过pdf一页显示的范围，无需分页
if (leftHeight < pageHeight) {
pdf.addImage(pageDate, 'JPEG', 0, position, imgWidth, imgHeight);
} else { // 分页
while (leftHeight > 0) {
pdf.addImage(pageDate, 'JPEG', 0, position, imgWidth, imgHeight)
leftHeight -= pageHeight;
position -= 841.89;
// 避免添加空白页
if (leftHeight > 0) {
pdf.addPage()
}
}
}
if (isDownload) {
pdf.save(`${pdfName}.pdf`);
}
if (isPrint) {
const link = window.URL.createObjectURL(toBlob(pdf.output('datauristring')));
const myWindow = window.open(link);
myWindow.print();
}
callback && callback(pdf);
})
}Salin selepas log masuk
Bahagian yang perlu dicetak
<div id="printDiv"></div>
Salin selepas log masuk
vie semua kod
<template>
<a-modal
v-model="visible"
:title="title"
:maskClosable="false"
centered
:width="1000"
@cancel="close"
>
<div id="printDiv">
<div v-if="!pdfing">
<span></span>
<span>入库单</span>
<a @click="printChart">打印报表</a>
</div>
<div class="maintain-view-title pdfing" v-else>
<span>入库单</span>
</div>
<a-form :colon="true" :label-col="{ span: 8 }" :wrapper-col="{ span: 15 }">
<a-row>
<a-col :span="8">
<a-form-item label="入库单号">
<span>{{ viewInfo.accessNumber }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="供应商">
<span>{{ viewInfo.supplier }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="入库日期">
<span>{{ viewInfo.accessDate && $moment(viewInfo.accessDate).format('YYYY-MM-DD HH:mm:ss') }}</span>
</a-form-item>
</a-col>
</a-row>
<a-row>
<a-col :span="8">
<a-form-item label="仓库">
<span>{{ viewInfo.warehouse }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="来源">
<span>{{ viewInfo.source }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="经办人">
<span>{{ viewInfo.handledBy }}</span>
</a-form-item>
</a-col>
</a-row>
<a-row>
<a-col :span="8">
<a-form-item label="采购单号">
<span>{{ viewInfo.purchaseOrderNo }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="发票号">
<span>{{ viewInfo.invoiceNo }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="合同号">
<span>{{ viewInfo.contractNo }}</span>
</a-form-item>
</a-col>
</a-row>
<a-row>
<a-col :span="8">
<a-form-item label="入库类型">
<span>{{ viewInfo.accessType }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="创建时间">
<span>{{ viewInfo.addTime }}</span>
</a-form-item>
</a-col>
<a-col :span="8">
<a-form-item label="备注">
<span>{{ viewInfo.content }}</span>
</a-form-item>
</a-col>
</a-row>
</a-form>
<a-table
style="marginTop: 10px;"
:columns="columns"
:data-source="data"
:pagination="false"
:loading="loading"
row-key="id"
>
</a-table>
</div>
<template slot="footer">
<a-button key="back" type="primary" @click="close">取消</a-button>
</template>
</a-modal>
</template>
<script>
import { outPutPdf } from "@/utils/util";
import { getStorageOrderTopDetail, getStorageOrderBottomListNoPage } from "@/api/stock";
export default {
name: "StockStorageOrderViewModal",
components: {},
data() {
return {
visible: false,
form: null,
title: "出库确认",
loading: false,
viewInfo: {},
columns: [
{
title: "序号",
key: "index",
customRender: (text, render, index) => {
return index + 1
},
align: "center"
},
{
title: "产品编号",
key: "productNumber",
dataIndex: "productNumber"
},
{
title: "类别",
key: "type",
dataIndex: "type"
},
{
title: "产品名称",
key: "productName",
dataIndex: "productName"
},
{
title: "规格型号",
dataIndex: "specifications",
dataIndex: "specifications"
},
{
title: "计量单位",
key: "unit",
dataIndex: "unit"
},
{
title: "批次",
key: "batch",
dataIndex: "batch"
},
{
title: "数量",
key: "number",
dataIndex: "number"
},
{
title: "单价",
key: "price",
dataIndex: "price"
},
{
title: "金额",
key: "total",
dataIndex: "total"
},
{
title: "已入库",
key: "inbound",
dataIndex: "inbound"
},
{
title: "未入库",
key: "notInbound",
dataIndex: "notInbound"
}
],
data: [],
pdfing: false, // 打印中
};
},
methods: {
// 显示弹框
show(id) {
this.visible = true;
// 获取上方数据
getStorageOrderTopDetail({ id }).then(res => {
if (res.code === 0) {
this.viewInfo = res.data;
}
});
// 获取下方表格数据
this.getTableData(id);
},
/**
* 关闭弹框
*/
close() {
this.visible = false;
this.$emit("cancel");
},
// 获取表格数据
getTableData(warehouseRegisterId) {
const params = {
warehouseRegisterId
};
getStorageOrderBottomListNoPage(params).then(res => {
this.loading = false;
if (res.code === 0) {
this.data = res.data;
} else {
this.$common.showErrorMessage(res.msg || "请求出现错误，请稍后再试");
}
});
},
// 打印
printChart() {
this.pdfing = true;
this.$nextTick(() => {
outPutPdf('printDiv', '入库单', false, true, () => {
this.pdfing = false;
});
});
}
}
};
</script>
<style scoped>
.maintain-view-title {
display: flex;
justify-content: space-between;
align-items: center;
&.pdfing {
justify-content: center;
}
.maintain-view-title-label {
font-weight: bold;
font-size: 1.5em;
}
}
.container-title-block {
display: flex;
justify-content: space-between;
margin-top: 10px;
}
.viewForm {
/deep/.ant-form-item {
margin-bottom: 0;
}
}
</style>Salin selepas log masuk
Pembelajaran yang disyorkan: "tutorial video reaksi"
Atas ialah kandungan terperinci Perkara yang perlu dilakukan jika gaya cetakan bertindak balas hilang. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!
![[Web front-end] Permulaan pantas Node.js](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
