最近项目中,前端采用react+antd+dva的组合,已经完成了后头管理类系统产品的更新迭代工作。
今天有一个新需求,需要在后台管理系统中实现点击打印完成指定页面的打印功能。
之前也没接触过,只知道浏览器带有打印功能的实现,window.print()。
问题来了,在react中是没有dom节点的,不过我们也是可以转为dom节点的。
常规js文件打印:
在react中,其实同样也是可以获取到节点信息的,在你需要打印的内容部分节点添加一个ID
打印按钮点击事件 print = () => { window.document.body.innerHTML = window.document.getElementById('billDetails').innerHTML; window.print(); window.location.reload();}
这样打印出来的内容是没有带样式的,因为一般css文件并不会写到行内去,所以在生成html的文件字符串时,里面没有样式信息,在打印时就会布局混乱。
要想打印出来的效果与网页上显示的效果一致,就需要在生成html的文件字符串时,带上样式信息。
方法1:把样式信息写在行内
在文件信息不复杂时,可以写在行内
方法2:使用react-inline-css
使用这个npm包,可以在配置后把样式自动添加到行内
网页效果图:
打印预览竖版效果图:
横版效果图:
打印效果图:
完整代码:
import React, { PureComponent } from 'react';import moment from 'moment';import { connect } from 'dva';import { Card, Button, Form, Table, message, } from 'antd';import PageHeaderLayout from '../../layouts/PageHeaderLayout';import { fixedZeroTo4Bit } from '../../utils/utils';import styles from './Funds.less';import { isEmptyObject } from '../../utils/reg';import { Yuan } from '../../utils/math';import watermark from '../../assets/icon/revocation.png';@connect(({ finance, loading }) => ({ finance, loading: loading.models.list,}))@Form.create()export default class LoanSettleMent extends PureComponent { constructor(props) { super(props); this.state = { loading: true, }; } componentDidMount() { const code = !isEmptyObject(this.props.match) ? this.props.match.params.id : 0; this.statisticalInfo({ receiptsCode: code }); } // 结算单列表详情 statisticalInfo(params) { this.props.dispatch({ type: 'finance/statisticalInfo', payload: params, }).then(() => { this.setState({ loading: false, }) }); } // 撤销操作 fetchRevocation(params) { this.props .dispatch({ type: 'finance/fetchRevocation', payload: params, }) .then(() => { const { finance: { revocationData } } = this.props; const { code } = revocationData; if (code === 200) { message.info('撤销货款单成功!').then(() => { window.location.href = '/funds/loansettlement'; }); } else { message.info('撤销货款单失败!'); } }); } // 撤销 cancer = () => { const code = !isEmptyObject(this.props.match) ? this.props.match.params.id : 0; this.fetchRevocation({ receiptsCode: code, }); }; // 返回 back = () => { window.history.back(); }; // 打印 print(){ window.document.body.innerHTML = window.document.getElementById('billDetails').innerHTML; window.print(); window.location.reload(); } render() { const { finance: { statisticalInfo }, loading } = this.props; let data = [], createName, createTime; if (statisticalInfo && !Array.isArray(statisticalInfo)) { data = statisticalInfo; createName = statisticalInfo.createName; createTime = statisticalInfo.createTime; } if (statisticalInfo != undefined) { data = statisticalInfo.goodsVos; } let _data = [], receiptsCode; if (statisticalInfo && !Array.isArray(statisticalInfo)) { _data = statisticalInfo; receiptsCode = statisticalInfo.receiptsCode; } const { supplierName, carNo, stallName, startTime, endTime, enable } = _data; const len = data.length; const columns = [ { title: '品种', dataIndex: 'attrName', align: 'center', }, { title: '销售货款', dataIndex: 'goodsAmount', align: 'left', render: (text, record, index) => { const { goodsAmount, goodsPaymentStr } = record; const type = goodsPaymentStr !== null ? goodsPaymentStr.split('负').length : -1; if (index < len - 1) { return {goodsAmount ? Yuan(goodsAmount, 2) : ''}; } return { children: type == 2 ? ( {goodsPaymentStr} ) : ( {goodsPaymentStr} ), props: { colSpan: 7, }, }; }, }, { title: '件数', dataIndex: 'number', align: 'center', render: (text, record, index) => { const { number } = record; if (index < len - 1) { return {number ? number : ''}; } return { children: '', props: { colSpan: 0, }, }; }, }, { title: '重量', dataIndex: 'weight', align: 'center', render: (text, record, index) => { const { weight } = record; if (index < len - 1) { return {weight ? weight : ''}; } return { children: '', props: { colSpan: 0, }, }; }, }, { title: '平均售价', dataIndex: 'averageAmount', align: 'center', render: (text, record, index) => { const { averageAmount } = record; if (index < len - 1) { return {averageAmount ? Yuan(averageAmount, 2) : ''}; } return { children: '', props: { colSpan: 0, }, }; }, }, { title: '平均重量', dataIndex: 'averageWeight', align: 'center', render: (text, record, index) => { const { averageWeight } = record; if (index < len - 1) { return {averageWeight ? averageWeight : ''}; } return { children: '', props: { colSpan: 0, }, }; }, }, { title: '费用类型', dataIndex: 'type', align: 'center', render: (text, record, index) => { const { type } = record; if (index < len - 1) { return {type}; } return { children: '', props: { colSpan: 0, }, }; }, }, { title: '扣款金额', dataIndex: 'amount', align: 'center', render: (text, record, index) => { const { amount } = record; if (index < len - 1) { return {amount !== null ? Yuan(amount, 2) : ''}; } return { children: '', props: { colSpan: 0, }, }; }, }, ]; return (); }} {stallName}
{`NO:${receiptsCode !== undefined ? receiptsCode : ''}`}商品销售车次结算单
{`货老板:${supplierName !== undefined ? supplierName : ''} ${ carNo !== undefined ? fixedZeroTo4Bit(carNo, 4) : 0 }车`}
{`到货时间:${moment(startTime).format('YYYY-MM-DD')}`}
{`售罄时间:${moment(endTime).format('YYYY-MM-DD')}`}
{`结算人:${createName !== undefined ? createName : ''}`}
{`结算时间:${moment(createTime).format( 'YYYY-MM-DD' )}`}
后续准备把dom节点转为pdf再加上去...待续