vue实战：打印小票的实现方法
vue也能实现打印小票？下面本篇文章就带大家详细了解一下怎么通过安装 lodop 打印控件，实现打印小票，本文附有详细实例代码哦，希望对大家有所帮助！
lodop 打印控件
安装 lodop 打印控件
lodop地址: http://www.c-lodop.com/download.html
把 LodopFuncs.js 引入项目
//==本JS是加载Lodop插件或Web打印服务CLodop/Lodop7的综合示例，可直接使用，建议理解后融入自己程序==
//用双端口加载主JS文件Lodop.js(或CLodopfuncs.js兼容老版本)以防其中某端口被占:
var MainJS = "CLodopfuncs.js",
URL_WS1 = "ws://localhost:8000/" + MainJS, //ws用8000/18000
URL_WS2 = "ws://localhost:18000/" + MainJS,
URL_HTTP1 = "http://localhost:8000/" + MainJS, //http用8000/18000
URL_HTTP2 = "http://localhost:18000/" + MainJS,
URL_HTTP3 = "https://localhost.lodop.net:8443/" + MainJS; //https用8000/8443
var CreatedOKLodopObject, CLodopIsLocal, LoadJsState;
//==判断是否需要CLodop(那些不支持插件的浏览器):==
export function needCLodop() {
try {
var ua = navigator.userAgent;
if (ua.match(/Windows\sPhone/i) ||
ua.match(/iPhone|iPod|iPad/i) ||
ua.match(/Android/i) ||
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;
}
}
//==检查加载成功与否，如没成功则用http(s)再试==
//==低版本CLODOP6.561/Lodop7.043及前)用本方法==
export function checkOrTryHttp() {
if (window.getCLodop) {
LoadJsState = "complete";
return true;
}
if (LoadJsState == "loadingB" || LoadJsState == "complete") return;
LoadJsState = "loadingB";
var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
var JS1 = document.createElement("script")
, JS2 = document.createElement("script")
, JS3 = document.createElement("script");
JS1.src = URL_HTTP1;
JS2.src = URL_HTTP2;
JS3.src = URL_HTTP3;
JS1.onload = JS2.onload = JS3.onload = JS2.onerror = JS3.onerror = function () { LoadJsState = "complete"; }
JS1.onerror = function (e) {
if (window.location.protocol !== 'https:')
head.insertBefore(JS2, head.firstChild); else
head.insertBefore(JS3, head.firstChild);
}
head.insertBefore(JS1, head.firstChild);
}
//==加载Lodop对象的主过程:==
(function loadCLodop() {
if (!needCLodop()) return;
CLodopIsLocal = !!((URL_WS1 + URL_WS2).match(/\/\/localho|\/\/127.0.0./i));
LoadJsState = "loadingA";
if (!window.WebSocket && window.MozWebSocket) window.WebSocket = window.MozWebSocket;
//ws方式速度快(小于200ms)且可避免CORS错误,但要求Lodop版本足够新:
try {
var WSK1 = new WebSocket(URL_WS1);
WSK1.onopen = function (e) { setTimeout("checkOrTryHttp();", 200); }
WSK1.onmessage = function (e) { if (!window.getCLodop) eval(e.data); }
WSK1.onerror = function (e) {
var WSK2 = new WebSocket(URL_WS2);
WSK2.onopen = function (e) { setTimeout("checkOrTryHttp();", 200); }
WSK2.onmessage = function (e) { if (!window.getCLodop) eval(e.data); }
WSK2.onerror = function (e) { checkOrTryHttp(); }
}
} catch (e) {
checkOrTryHttp();
}
})();
//==获取LODOP对象主过程,判断是否安装、需否升级:==
export function getLodop(oOBJECT, oEMBED) {
var strFontTag = "<br><font color='#FF00FF'>打印控件";
var strLodopInstall = strFontTag + "未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>";
var strLodopUpdate = strFontTag + "需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>";
var strLodop64Install = strFontTag + "未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>";
var strLodop64Update = strFontTag + "需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>";
var strCLodopInstallA = "<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 strCLodopInstallB = "<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 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>";
var strLodop7FontTag = "<br><font color='#FF00FF'>Web打印服务Lodop7";
var strLodop7HrefX86 = "点击这里<a href='Lodop7_Linux_X86_64.tar.gz' target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)";
var strLodop7HrefARM = "点击这里<a href='Lodop7_Linux_ARM64.tar.gz' target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)";
var strLodop7Install_X86 = strLodop7FontTag + "未安装启动，" + strLodop7HrefX86;
var strLodop7Install_ARM = strLodop7FontTag + "未安装启动，" + strLodop7HrefARM;
var strLodop7Update_X86 = strLodop7FontTag + "需升级，" + strLodop7HrefX86;
var strLodop7Update_ARM = strLodop7FontTag + "需升级，" + strLodop7HrefARM;
var strInstallOK = "，成功后请刷新本页面或重启浏览器。</font>";
var LODOP;
try {
var isWinIE = (/MSIE/i.test(navigator.userAgent)) || (/Trident/i.test(navigator.userAgent));
var isWinIE64 = isWinIE && (/x64/i.test(navigator.userAgent));
var isLinuxX86 = (/Linux/i.test(navigator.platform)) && (/x86/i.test(navigator.platform));
var isLinuxARM = (/Linux/i.test(navigator.platform)) && (/aarch/i.test(navigator.platform));
if (needCLodop() || isLinuxX86 || isLinuxARM) {
try {
LODOP = window.getCLodop();
} catch (err) { }
if (!LODOP && LoadJsState !== "complete") {
if (!LoadJsState)
alert("未曾加载Lodop主JS文件，请先调用loadCLodop过程."); else
alert("网页还没下载完毕，请稍等一下再操作.");
return;
}
var strAlertMessage;
if (!LODOP) {
if (isLinuxX86)
strAlertMessage = strLodop7Install_X86;
else if (isLinuxARM)
strAlertMessage = strLodop7Install_ARM;
else
strAlertMessage = strCLodopInstallA + (CLodopIsLocal ? strCLodopInstallB : "");
document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML;
return;
} else {
if (isLinuxX86 && LODOP.CVERSION < "7.0.4.3")
strAlertMessage = strLodop7Update_X86;
else if (isLinuxARM && LODOP.CVERSION < "7.0.4.3")
strAlertMessage = strLodop7Update_ARM;
else if (CLODOP.CVERSION < "6.5.7.0")
strAlertMessage = strCLodopUpdate;
if (strAlertMessage)
document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML;
}
} else {
//==如果页面有Lodop插件就直接使用,否则新建:==
if (oOBJECT || oEMBED) {
if (isWinIE)
LODOP = oOBJECT;
else
LODOP = oEMBED;
} else if (!CreatedOKLodopObject) {
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 (isWinIE)
LODOP.setAttribute("classid", "clsid:2105C259-1E0C-4534-8141-A753534CB4CA");
else
LODOP.setAttribute("type", "application/x-print-lodop");
document.documentElement.appendChild(LODOP);
CreatedOKLodopObject = LODOP;
} else
LODOP = CreatedOKLodopObject;
//==Lodop插件未安装时提示下载地址:==
if ((!LODOP) || (!LODOP.VERSION)) {
document.body.innerHTML = (isWinIE64 ? strLodop64Install : strLodopInstall) + strInstallOK + document.body.innerHTML;
return LODOP;
}
if (LODOP.VERSION < "6.2.2.6") {
document.body.innerHTML = (isWinIE64 ? strLodop64Update : strLodopUpdate) + strInstallOK + 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);
}
}去掉测试版本
myPreview1() {
// this.CreateImage();
// this.LODOP.PRINT();
let LODOP = getLodop();
console.log(' LODOP', LODOP)
var strHTML = document.getElementById("box").innerHTML;
LODOP.PRINT_INIT("")
LODOP.SET_LICENSES("", "EE0887D00FCC7D29375A695F728489A6", "C94CEE276DB2187AE6B65D56B3FC2848", ""); //去掉测试版本
// LODOP.SET_PRINT_PAGESIZE(3, "80mm", "10mm", "CreateCustomPage"); //80打印机不需要加这行
LODOP.SET_PRINT_STYLE("FontSize", 15); // 设置打印字体
LODOP.SET_PRINT_STYLE("Bold", 1); // 设置加粗
LODOP.SET_PRINT_MODE("PRINT_PAGE_PERCENT", "Height:90%");
LODOP.SET_PRINT_MODE("PRINT_PAGE_PERCENT", "Full-Width");
LODOP.ADD_PRINT_HTM(10, 10, "90%", "70%", strHTML);
LODOP.PRINT();//
// this.LODOP.PREVIEW()
},（学习视频分享：vuejs入门教程、编程基础视频）
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