vue打印電子面單（后台傳來的html的解決方案）

//打印可以使用lodop這個經典的前端打印控件

1、在vue assets目錄新建LodopFuncs.js,(可以自由選擇其他路徑),里面的內容為：

var CreatedOKLodop7766=null;
 
//====判斷是否需要安裝CLodop雲打印服務器:====
export function needCLodop(){
 try{
  var ua=navigator.userAgent;
  if (ua.match(/Windows\sPhone/i) !=null) return true;
  if (ua.match(/iPhone|iPod/i) != null) return true;
  if (ua.match(/Android/i) != null) return true;
  if (ua.match(/Edge\D?\d+/i) != null) 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==null)&&(verIE==null)&&(x64!==null))
   return true; else
  if ( verFF !== null) {
   verFF = verFF[0].match(/\d+/);
   if ((verFF[0]>= 42)||(x64!==null)) return true;
  } else
  if ( verOPR !== null) {
   verOPR = verOPR[0].match(/\d+/);
   if ( verOPR[0] >= 32 ) return true;
  } else
  if ((verTrident==null)&&(verIE==null)) {
   var verChrome=ua.match(/Chrome\D?\d+/i);
   if ( verChrome !== null ) {
    verChrome = verChrome[0].match(/\d+/);
    if (verChrome[0]>=42) return true;
   };
  };
  return false;
 } catch(err) {return true;};
};
 
//====頁面引用CLodop雲打印必須的JS文件：====
if (needCLodop()) {
 var head = document.head || document.getElementsByTagName("head")[0] || document.documentElement;
 var oscript = document.createElement("script");
 oscript.src ="http://localhost:8000/CLodopfuncs.js?priority=1";
 head.insertBefore( oscript,head.firstChild );
 
 //引用雙端口(8000和18000）避免其中某個被占用：
 oscript = document.createElement("script");
 oscript.src ="http://localhost:18000/CLodopfuncs.js?priority=0";
 head.insertBefore( oscript,head.firstChild );
};
 
//====獲取LODOP對象的主過程：====
export function getLodop(oOBJECT,oEMBED){
 var strHtmInstall="<br><font color='#FF00FF'>打印控件未安裝!點擊這里<a href='install_lodop32.exe' target='_self'>執行安裝</a>,安裝后請刷新頁面或重新進入。</font>";
 var strHtmUpdate="<br><font color='#FF00FF'>打印控件需要升級!點擊這里<a href='install_lodop32.exe' target='_self'>執行升級</a>,升級后請重新進入。</font>";
 var strHtm64_Install="<br><font color='#FF00FF'>打印控件未安裝!點擊這里<a href='install_lodop64.exe' target='_self'>執行安裝</a>,安裝后請刷新頁面或重新進入。</font>";
 var strHtm64_Update="<br><font color='#FF00FF'>打印控件需要升級!點擊這里<a href='install_lodop64.exe' target='_self'>執行升級</a>,升級后請重新進入。</font>";
 var strHtmFireFox="<br><br><font color='#FF00FF'>（注意：如曾安裝過Lodop舊版附件npActiveXPLugin,請在【工具】->【附加組件】->【擴展】中先卸它）</font>";
 var strHtmChrome="<br><br><font color='#FF00FF'>(如果此前正常，僅因瀏覽器升級或重安裝而出問題，需重新執行以上安裝）</font>";
 var strCLodopInstall="<br><font color='#FF00FF'>CLodop雲打印服務(localhost本地)未安裝啟動!點擊這里<a href='http://www.c-lodop.com/download/CLodop_Setup_for_Win32NT_https_3.008Extend.zip' target='_self'>執行安裝</a>,安裝后請刷新頁面。</font>";
 var strCLodopUpdate="<br><font color='#FF00FF'>CLodop雲打印服務需升級!點擊這里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>執行升級</a>,升級后請刷新頁面。</font>";
 var LODOP;
 try{
  var isIE = (navigator.userAgent.indexOf('MSIE')>=0) || (navigator.userAgent.indexOf('Trident')>=0);
  if (needCLodop()) {
   try{ LODOP=getCLodop();} catch(err) {};
   if (!LODOP && document.readyState!=="complete") {alert("C-Lodop沒准備好，請稍后再試！"); return;};
   if (!LODOP) {
    // if (isIE) document.write(strCLodopInstall); else
     // document.documentElement.innerHTML=strCLodopInstall+document.documentElement.innerHTML;
    // return;
   } else {
 
    if (CLODOP.CVERSION<"3.0.0.2") {
     if (isIE) document.write(strCLodopUpdate); else
      document.documentElement.innerHTML=strCLodopUpdate+document.documentElement.innerHTML;
    };
    if (oEMBED && oEMBED.parentNode) oEMBED.parentNode.removeChild(oEMBED);
    if (oOBJECT && oOBJECT.parentNode) oOBJECT.parentNode.removeChild(oOBJECT);
   };
  } else {
   var is64IE = isIE && (navigator.userAgent.indexOf('x64')>=0);
   //=====如果頁面有Lodop就直接使用，沒有則新建:==========
   if (oOBJECT!=undefined || oEMBED!=undefined) {
    if (isIE) LODOP=oOBJECT; else LODOP=oEMBED;
   } else if (CreatedOKLodop7766==null){
    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插件未安裝時提示下載地址:==========
   if ((LODOP==null)||(typeof(LODOP.VERSION)=="undefined")) {
    if (navigator.userAgent.indexOf('Chrome')>=0)
     document.documentElement.innerHTML=strHtmChrome+document.documentElement.innerHTML;
    if (navigator.userAgent.indexOf('Firefox')>=0)
     document.documentElement.innerHTML=strHtmFireFox+document.documentElement.innerHTML;
    if (is64IE) document.write(strHtm64_Install); else
    if (isIE)  document.write(strHtmInstall);  else
     document.documentElement.innerHTML=strHtmInstall+document.documentElement.innerHTML;
    return LODOP;
   };
  };
  if (LODOP.VERSION<"6.0") {
   if (!needCLodop()){
    if (is64IE) document.write(strHtm64_Update); else
    if (isIE) document.write(strHtmUpdate); else
     document.documentElement.innerHTML=strHtmUpdate+document.documentElement.innerHTML;
   };
   return LODOP;
  };
  //===如下空白位置適合調用統一功能(如注冊語句、語言選擇等):===
  //LODOP.SET_LICENSES("北京XXXXX公司","8xxxxxxxxxxxxx5","","");
 
  //===========================================================
  return LODOP;
 } catch(err) {alert("getLodop出錯:"+err);};
};

　　2、在util目錄下，新建print.js,引用並封裝剛才建的loadopFuncs.js文件

import { getLodop } from "@/assets/LodopFuncs";
export const printPdf = (html) => {
    let LODOP = getLodop();
    LODOP.SET_PRINT_STYLEA(0, "HtmWaitMilSecs", 1000);

    LODOP.PRINT_INIT("訂貨單");
    LODOP.SET_PRINT_STYLE("FontSize", 18);
    LODOP.SET_PRINT_STYLE("Bold", 1);
    LODOP.ADD_PRINT_HTM(
        "0",
        "0",
        "100%",
        "100%",
        html
    );
    LODOP.PRINT();
}

　　3、頁面引用並使用

import { printPdf } from "@/utils/print";



printpdf(html);     //html指的是后台傳過來的html面單信息.

　　//注意，需要到lodop官網，下載對應的

Lodop綜合版(Lodop6.226+CLodop4.088)，安裝里面的install_lodop64.exe、CLodop_Setup_for_Win32NT.exe這兩個文件