electron + vue + lodop实现打印预览功能
因为electron集成的客户端并不像浏览器那样自带打印功能，然后查了electron的打印，资料太少，什么静默打印乱七八糟的看不太懂，好像也没有预览的功能。。然后我找到了lodop控件，实现了打印功能步骤一:到官网下载lodop，安装到电脑。下载地址：http://www.lodop.net/download.html步骤二：修改LodopFuncs.js源码，其实很简单...
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因为electron集成的客户端并不像浏览器那样自带打印功能，然后查了electron的打印，资料太少，什么静默打印乱七八糟的看不太懂，好像也没有预览的功能。。然后我找到了lodop控件，实现了打印功能
步骤一:到官网下载lodop，安装到电脑。
下载地址：http://www.lodop.net/download.html
步骤二：修改LodopFuncs.js源码，其实很简单，就是改为es6的模块化语法，方便在vue项目中引用而已。也就是在每个function前加上export ，具体如下
var CreatedOKLodop7766 = null, CLodopIsLocal;
//====判断是否需要 Web打印服务CLodop:===
//===(不支持插件的浏览器版本需要用它)===
export function needCLodop() {
try {
var ua = navigator.userAgent;
if (ua.match(/Windows\sPhone/i))
return true;
if (ua.match(/iPhone|iPod|iPad/i))
return true;
if (ua.match(/Android/i))
return true;
if (ua.match(/Edge\D?\d+/i))
return true;
var verTrident = ua.match(/Trident\D?\d+/i);
var verIE = ua.match(/MSIE\D?\d+/i);
var verOPR = ua.match(/OPR\D?\d+/i);
var verFF = ua.match(/Firefox\D?\d+/i);
var x64 = ua.match(/x64/i);
if ((!verTrident) && (!verIE) && (x64))
return true;
else if (verFF) {
verFF = verFF[0].match(/\d+/);
if ((verFF[0] >= 41) || (x64))
return true;
} else if (verOPR) {
verOPR = verOPR[0].match(/\d+/);
if (verOPR[0] >= 32)
return true;
} else if ((!verTrident) && (!verIE)) {
var verChrome = ua.match(/Chrome\D?\d+/i);
if (verChrome) {
verChrome = verChrome[0].match(/\d+/);
if (verChrome[0] >= 41)
return true;
}
}
return false;
} catch (err) {
return true;
}
}
//====页面引用CLodop云打印必须的JS文件,用双端口(8000和18000）避免其中某个被占用：====
if (needCLodop()) {
var src1 = "http://localhost:8000/CLodopfuncs.js?priority=1";
var src2 = "http://localhost:18000/CLodopfuncs.js?priority=0";
var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
var oscript = document.createElement("script");
oscript.src = src1;
head.insertBefore(oscript, head.firstChild);
oscript = document.createElement("script");
oscript.src = src2;
head.insertBefore(oscript, head.firstChild);
CLodopIsLocal = !!((src1 + src2).match(/\/\/localho|\/\/127.0.0./i));
}
//====获取LODOP对象的主过程：====
export function getLodop(oOBJECT, oEMBED) {
var strHtmInstall = "<br><font color='#FF00FF'>打印控件未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>";
var strHtmUpdate = "<br><font color='#FF00FF'>打印控件需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>";
var strHtm64_Install = "<br><font color='#FF00FF'>打印控件未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>";
var strHtm64_Update = "<br><font color='#FF00FF'>打印控件需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>";
var strHtmFireFox = "<br><br><font color='#FF00FF'>（注意：如曾安装过Lodop旧版附件npActiveXPLugin,请在【工具】->【附加组件】->【扩展】中先卸它）</font>";
var strHtmChrome = "<br><br><font color='#FF00FF'>(如果此前正常，仅因浏览器升级或重安装而出问题，需重新执行以上安装）</font>";
var strCLodopInstall_1 = "<br><font color='#FF00FF'>Web打印服务CLodop未安装启动，点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>下载执行安装</a>";
var strCLodopInstall_2 = "<br>（若此前已安装过，可<a href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）";
var strCLodopInstall_3 = "，成功后请刷新本页面。</font>";
var strCLodopUpdate = "<br><font color='#FF00FF'>Web打印服务CLodop需升级!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行升级</a>,升级后请刷新页面。</font>";
var LODOP;
try {
var ua = navigator.userAgent;
var isIE = !!(ua.match(/MSIE/i)) || !!(ua.match(/Trident/i));
if (needCLodop()) {
try {
LODOP = getCLodop();
} catch (err) {}
if (!LODOP && document.readyState !== "complete") {
alert("网页还没下载完毕，请稍等一下再操作.");
return;
}
if (!LODOP) {
document.body.innerHTML = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : "") + strCLodopInstall_3 + document.body.innerHTML;
return;
} else {
if (CLODOP.CVERSION < "3.0.8.3") {
document.body.innerHTML = strCLodopUpdate + document.body.innerHTML;
}
if (oEMBED && oEMBED.parentNode)
oEMBED.parentNode.removeChild(oEMBED);
if (oOBJECT && oOBJECT.parentNode)
oOBJECT.parentNode.removeChild(oOBJECT);
}
} else {
var is64IE = isIE && !!(ua.match(/x64/i));
//=====如果页面有Lodop就直接使用，没有则新建:==========
if (oOBJECT || oEMBED) {
if (isIE)
LODOP = oOBJECT;
else
LODOP = oEMBED;
} else if (!CreatedOKLodop7766) {
LODOP = document.createElement("object");
LODOP.setAttribute("width", 0);
LODOP.setAttribute("height", 0);
LODOP.setAttribute("style", "position:absolute;left:0px;top:-100px;width:0px;height:0px;");
if (isIE)
LODOP.setAttribute("classid", "clsid:2105C259-1E0C-4534-8141-A753534CB4CA");
else
LODOP.setAttribute("type", "application/x-print-lodop");
document.documentElement.appendChild(LODOP);
CreatedOKLodop7766 = LODOP;
} else
LODOP = CreatedOKLodop7766;
//=====Lodop插件未安装时提示下载地址:==========
if ((!LODOP) || (!LODOP.VERSION)) {
if (ua.indexOf('Chrome') >= 0)
document.body.innerHTML = strHtmChrome + document.body.innerHTML;
if (ua.indexOf('Firefox') >= 0)
document.body.innerHTML = strHtmFireFox + document.body.innerHTML;
document.body.innerHTML = (is64IE ? strHtm64_Install : strHtmInstall) + document.body.innerHTML;
return LODOP;
}
}
if (LODOP.VERSION < "6.2.2.6") {
if (!needCLodop())
document.body.innerHTML = (is64IE ? strHtm64_Update : strHtmUpdate) + document.body.innerHTML;
}
//===如下空白位置适合调用统一功能(如注册语句、语言选择等):==
//=======================================================
return LODOP;
} catch (err) {
alert("getLodop出错:" + err);
}
}
步骤三：就是在组件引入LodopFuncs.js啦
vue相应组件的script代码
<script>
import {getLodop} from "../../../config/LodopFuncs";
export default {
name: "PrintDetailDialog",
props:{
PrintDetailDialogVisible:{
type:Boolean,
default:null
}
},
data () {
return {
showClose:false,
tableData:{
one:'扭力扳手',
two:'aaaa',
three:'2019-04-23 10:12:30',
four:'1111',
five:12,
six:8,
seven:666,
eight:353,
nine:2312,
mark:'已领用已领用'
}
}
},
methods:{
handlePrintBtnClick () {
// this.$print(this.$refs.printContent);
},
printPdf() {
let LODOP = getLodop();
var strBodyStyle = '<link href="../../../assets/css/print.css" type="text/css" rel="stylesheet">';
var strTableHtml = "<head>"+strBodyStyle+"</head><body>"+document.getElementById('PrintDetailTable').innerHTML+"</body>";
LODOP.PRINT_INIT("订货单");
LODOP.SET_PRINT_STYLE("FontSize", 18);
LODOP.SET_PRINT_STYLE("Bold", 1);
// LODOP.ADD_PRINT_TEXT(50, 231, 500, 39, "打印页面部分内容");
LODOP.ADD_PRINT_HTM(0, "5%", "90%", "100%",strTableHtml);
//参数按顺序分别为，上下间距，左右间距，宽度，高度
// LODOP.PRINT();
LODOP.PREVIEW();
}
}
}
</script>template部分如下
到了这步，就可以打印预览了，
重点来了！！！！！
如果你写的外联样式，你会发现样式不生效，哈哈
所以样式写内联。。
我目前没有找到外联样式的解决方法。。搜到的方法都试了就是木有效果。。。哪位亲知道引用外联样式的方法告诉一下我，多谢啦！
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