//==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):==
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==
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:==
// eslint-disable-next-line @typescript-eslint/no-unused-vars,no-unused-vars
function getLodop(oOBJECT, oEMBED) {
alert("SET_LICENSES执行了");
var strFontTag = "
打印控件";
var strLodopInstall = strFontTag + "未安装!点击这里执行安装";
var strLodopUpdate = strFontTag + "需要升级!点击这里执行升级";
var strLodop64Install = strFontTag + "未安装!点击这里执行安装";
var strLodop64Update = strFontTag + "需要升级!点击这里执行升级";
var strCLodopInstallA =
"
Web打印服务CLodop未安装启动，点击这里下载执行安装";
var strCLodopInstallB = "
（若此前已安装过，可点这里直接再次启动）";
var strCLodopUpdate =
"
Web打印服务CLodop需升级!点击这里执行升级";
var strLodop7FontTag = "
Web打印服务Lodop7";
var strLodop7HrefX86 =
"点击这里下载安装(下载后解压，点击lodop文件开始执行)";
var strLodop7HrefARM =
"点击这里下载安装(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。';
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) {
/* empty */
}
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 < '7.1.0.1') strAlertMessage = strLodop7Update_X86;
else if (isLinuxARM && LODOP.CVERSION < '7.1.0.1') strAlertMessage = strLodop7Update_ARM;
else if (CLODOP.CVERSION < '6.6.2.3') 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):=======================
alert("SET_LICENSES执行了");
LODOP.SET_LICENSES("","8B7A45DAE7262E36A87452727380929E9FC","","");
alert("SET_LICENSES执行了");
//===============================================================================
return LODOP;
} catch (err) {
alert('getLodop出错:' + err);
}
}