vue-print打印（含多页打印带表头）-526互联

打印功能开发：
1）使用vuePlugsPrint.js
2）main.js 加入：import vuePlugsPrint from '@/utils/vuePlugsPrint'
Vue.use(vuePlugsPrint);

3）创建打印模板页面：templatePrint.vue
4）使用页面引入： <el-col :span="1.5">
<el-button type="info" plain icon="el-icon-printer" size="mini" @click="handlePrint" >打印</el-button>
<template-print :row=" modalObj.form.row " ref="printRef"></template-print>
</el-col>
<script>引入: import templatePrint from '@/views/print/templatePrint'
定义数据：modalObj: {
form: {
row: {
details: null
}
}
},
方法：handlePrint() {/**打印 **/
const row = {
details: this.queryList /**queryList为打印列表list **/
};
this.modalObj.form.row = row;
this.$nextTick(() => {
this.$refs['printRef'].start()
})
},

5）代码明细：

vuePlugsPrint.js：

// 打印类属性、方法定义
/* eslint-disable */
const Print = function (dom, options, pageSize) {

if (!(this instanceof Print)) return new Print(dom, options, pageSize);

this.options = this.extend({
'noPrint': '.no-print'
}, options, pageSize);

if ((typeof dom) === "string") {
this.dom = document.querySelector(dom);
} else {
this.isDOM(dom)
this.dom = this.isDOM(dom) ? dom : dom.$el;
}

this.init(pageSize);
};
Print.prototype = {
init: function (pageSize) {
var content = this.getStyle(pageSize) + this.getHtml();
this.writeIframe(content);
},
extend: function (obj, obj2) {
for (var k in obj2) {
obj[k] = obj2[k];
}
return obj;
},

getStyle: function (pageSize) {
var str = "",
styles = document.querySelectorAll('style,link');
for (var i = 0; i < styles.length; i++) {
str += styles[i].outerHTML;
}
str += "<style>" + (this.options.noPrint ? this.options.noPrint : '.no-print') + "{display:none;}</style>";
str += "<style>html,body,div{height: auto!important;}</style>";

str = str.replace('size: A5', `size: ${pageSize}`);

return str;
},

getHtml: function () {
var inputs = document.querySelectorAll('input');
var textareas = document.querySelectorAll('textarea');
var selects = document.querySelectorAll('select');

for (var k = 0; k < inputs.length; k++) {
if (inputs[k].type == "checkbox" || inputs[k].type == "radio") {
if (inputs[k].checked == true) {
inputs[k].setAttribute('checked', "checked")
} else {
inputs[k].removeAttribute('checked')
}
} else if (inputs[k].type == "text") {
inputs[k].setAttribute('value', inputs[k].value)
} else {
inputs[k].setAttribute('value', inputs[k].value)
}
}

for (var k2 = 0; k2 < textareas.length; k2++) {
if (textareas[k2].type == 'textarea') {
textareas[k2].innerHTML = textareas[k2].value
}
}

for (var k3 = 0; k3 < selects.length; k3++) {
if (selects[k3].type == 'select-one') {
var child = selects[k3].children;
for (var i in child) {
if (child[i].tagName == 'OPTION') {
if (child[i].selected == true) {
child[i].setAttribute('selected', "selected")
} else {
child[i].removeAttribute('selected')
}
}
}
}
}

let content = this.dom.outerHTML;
if (content.indexOf('hidden="hidden"') > -1) {
content = content.replace('hidden="hidden"', '');
}
return content;
},

writeIframe: function (content) {
var w, doc, iframe = document.createElement('iframe'), f = document.body.appendChild(iframe);
iframe.id = "myIframe";
//iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;";
iframe.setAttribute('style', 'position:absolute;width:0;height:0;top:-10px;left:-10px;');
w = f.contentWindow || f.contentDocument;
doc = f.contentDocument || f.contentWindow.document;
doc.open();
doc.write(content);
doc.close();
var _this = this
iframe.onload = function () {
_this.toPrint(w, _this.options);
setTimeout(function () {
document.body.removeChild(iframe)
}, 100)
}
},

toPrint: function (frameWindow, options) {
try {
setTimeout(function () {
frameWindow.focus();
try {
if (!frameWindow.document.execCommand('print', false, null)) {
frameWindow.print();
}
if (options.callback ) options.callback()
} catch (e) {
frameWindow.print();
}
frameWindow.close();
}, 10);
} catch (err) {
console.log('err', err);
}
},
isDOM: (typeof HTMLElement === 'object') ?
function (obj) {
return obj instanceof HTMLElement;
} :
function (obj) {
return obj && typeof obj === 'object' && obj.nodeType === 1 && typeof obj.nodeName === 'string';
},
};
const MyPlugin = {}
MyPlugin.install = function (Vue, options) {
// 4. 添加实例方法
Vue.prototype.$print = Print
}
export default MyPlugin

----------------------------------------------------------

templatePrint.vue：

<template>
<div class="template-print" ref="printRef" hidden="hidden">
<TABLE>

<THEAD>
<TR>
<TH></TH >
</TR>
</THEAD>

<TBODY>
<TR>
<TD>
<table class="common-table">

<thead>
<tr>
<th>序号</th>
<th>编码</th>
<th>名称</th>
<th>规格</th>
<th>分类</th>
</tr>
</thead>

<tbody v-if="row.details.length">
<tr v-for="item in row.details" :key="item.fid">
<td>{{ item.fid }}</td>
<td>{{ item.code }}</td>
<td>{{ item.name }}</td>
<td>{{ item.model }}</td>
<td>{{ item.type }}</td>
</tr>
</tbody>
<div v-if="!row.details.length">
<span>暂无数据</span>
</div>
</table>
</TD>
</TR>
</TBODY>

<TFOOT>
<TR>
<TD></TD>
</TR>
</TFOOT>

</TABLE>
</div>
</template>

export default {
props: ['row'],
methods: {
start() {
this.$print(this.$refs.printRef, {}, 'A4')
},
}
}
</script>

@media print {
* {
color: #000 !important;
}

table {
border-collapse: collapse;
table-layout: fixed;
width 100%;
border-spacing: 0;
}

table, tbody, thead {
width: 100% !important;
}

.template-print {
width: 100% !important;
font-size: 14px;
}

}

.template-print
padding 12px
line-height 1.8

.summary
display flex
flex-wrap wrap

.col1
width 50%

.title
font-size 18px
text-align center

.common-table
td, th
border: 0.05rem solid #000;
font-size: 12px;
text-align: center
border-color: black
</style>