vue使用lodop打印控件实现浏览器兼容打印的方法

前言

此控件直接进行打印底部会有水印，通过官网购买可以解决；
如不想购买，可先执行预览，弹出预览框进行打印；
需要用到的js文件和api文档附后，请注意查看。
首先需要在局部或全局引入LodopFuncs.js文件
import {getLodop} from '../../../components/js/LodopFuncs'

方法中调用

print(){
   let LODOP = getLodop();
   LODOP.PRINT_INITA(0,0,800,1600,"打印库位名称");
   LODOP.SET_PRINT_PAGESIZE(1,700,500,"") //设定纸张大小
    LODOP.NewPage();//初始化
    LODOP.SET_PRINT_MODE("RESELECT_PRINTER",true);
    LODOP.ADD_PRINT_TEXT('10mm','50mm','30mm','20mm','iphone20Plus');//打印文字
    LODOP.SET_PRINT_STYLEA(0,"FontSize",30);//字体样式
    LODOP.ADD_PRINT_LINE('10mm','35mm','40mm','35mm',0,1);//打印直线
    LODOP.ADD_PRINT_BARCODE('10mm','2.5mm','35mm','35mm',"QRCode",'123456');//打印二维码
    LODOP.SET_PRINT_STYLEA(0,"AlignJustify",2);//二维码样式和规则
    LODOP.SET_PRINTER_INDEXA("TSC TTP-244 Pro");//选择打印机
   // LODOP.PRINT_DESIGN()//打开设置
   // LODOP.PREVIEW(); //预览
    LODOP.PRINT() //直接打印
  },

LodopFuncs.js文件

//==本JS是加载Lodop插件及CLodop服务的综合示例，可直接使用，建议看懂后融进自己页面程序==

var CreatedOKLodopObject, CLodopIsLocal, CLodopJsState;


//==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))
      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;
  }
}

//==引用CLodop的主JS,用双端口8000和18000(以防其中一个被占):==
if (needCLodop()) {
  var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
  
  var JS1 = document.createElement("script");
  JS1.src = "http://localhost:8000/CLodopfuncs.js?priority=1";
  head.insertBefore(JS1, head.firstChild);

  var JS2 = document.createElement("script");
  JS2.src = "http://localhost:18000/CLodopfuncs.js?priority=0";
  head.insertBefore(JS2, head.firstChild);

  CLodopIsLocal = !!((JS1.src + JS2.src).match(/\/\/localho|\/\/127.0.0./i));

  if (JS1.attachEvent) {
  	CLodopJsState = "loading";
    var onChange = function(){ 
	   if (window.event.srcElement.readyState == 'loaded')        
	   CLodopJsState = "complete";
	};
	JS1.attachEvent('onreadystatechange',onChange);
	JS2.attachEvent('onreadystatechange',onChange);
  }
}

//==获取LODOP对象主过程,判断是否安装、需否升级:==
export function getLodop(oOBJECT, oEMBED) {
  var strHtmInstall = "
打印控件未安装!点击这里执行安装,安装后请刷新页面或重新进入。";
  var strHtmUpdate = "
打印控件需要升级!点击这里执行升级,升级后请重新进入。";
  var strHtm64_Install = "
打印控件未安装!点击这里执行安装,安装后请刷新页面或重新进入。";
  var strHtm64_Update = "
打印控件需要升级!点击这里执行升级,升级后请重新进入。";
  var strHtmFireFox = "

（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）";
  var strHtmChrome = "

(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）";
  var strCLodopInstall_1 = "
Web打印服务CLodop未安装启动，点击这里下载执行安装";
  var strCLodopInstall_2 = "
（若此前已安装过，可点这里直接再次启动）";
  var strCLodopInstall_3 = "，成功后请刷新本页面。";
  var strCLodopUpdate = "
Web打印服务CLodop需升级!点击这里执行升级,升级后请刷新页面。";
  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" || (isIE && CLodopJsState == "loading")) ) {
        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 < "3.0.9.3") {
          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,否则新建:==
      if (oOBJECT || oEMBED) {
        if (isIE)
          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 (isIE)
          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)) {
        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);
  }
}

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