思路：因为要打印的文件在服务器端，需要在客户端与服务端交互且执行PDF打印
很显然需要个浏览器插件，来读取pdf文件，这样自然想到adobe reader adobe reader可以在线打开pdf文件，
且有相应接口给js调用 顺着这个思路，下面工作就很简单了。
第一步：客户端必须装adobe reader，需要个判断是否安装了，没安装提示要安装
function Check_AdobeReader() {var displayString;var acrobat = new Object();acrobat.installed = false;acrobat.version = "0.0";if (navigator.plugins && navigator.plugins.length) {for (x = 0; x < navigator.plugins.length; x++) {if (navigator.plugins[x].description.indexOf("Adobe Acrobat") != -1) {acrobat.version = parseFloat(navigator.plugins[x].description.split("Version ")[1]);if (acrobat.version.toString().length == 1) acrobat.version += ".0";acrobat.installed = true;displayString = "Acrobat Version: " + acrobat.version;break;} else if (navigator.plugins[x].description.indexOf("Adobe PDF Plug-In") != -1) {acrobat.installed = true;acrobat.version = "8+";displayString = "Acrobat Version 8 or Above";}}} else if (window.ActiveXObject) {for (x = 2; x < 10; x++) {try {oAcro = eval("new ActiveXObject('PDF.PdfCtrl." + x + "');");if (oAcro) {acrobat.installed = true;acrobat.version = x + ".0";displayString = "Acrobat Version: " + acrobat.version;}}catch (e) { }}try {oAcro4 = new ActiveXObject("PDF.PdfCtrl.1");if (oAcro4) {acrobat.installed = true;acrobat.version = '4.0';displayString = 'Acrobat Version: ' + acrobat.version;}}catch (e) { }try {oAcro7 = new ActiveXObject('AcroPDF.PDF.1');if (oAcro7) {acrobat.installed = true;acrobat.version = '7.0';displayString = 'Acrobat Version: ' + acrobat.version;}}catch (e) { }}return acrobat;}if (Check_AdobeReader().version == "0.0") {alert("未安装Adobe Reader,请下载安装");window.open("/cn/reader/");}else {doprintall();}
2.安装后要批量调用且打印，选中文件后，点击批量打印，自动生成页面代码，并加载打印页面
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="/1999/xhtml"><head><title></title></head><body><div><input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTg0NTYxMzIxNWRkMxzW+RBkXTnBrKPs7n04X+5iq/I=" /></div><div><object classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" name="PDF1" width="0"height="0" border="0"><param name="SRC" value="/pdf/test1.pdf" /></object></div><script language="JavaScript" type="text/javascript"> PDF1.printAll();</script><div><object classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" name="PDF2" width="0" height="0" border="0"><param name="SRC" value="/pdf/test2.pdf" /></object></div><script language="JavaScript" type="text/javascript"> PDF2.printAll();</script><div><object classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" name="PDF3" width="0" height="0" border="0"><param name="SRC" value="/pdf/test5.pdf" /></object></div><script language="JavaScript" type="text/javascript"> PDF3.printAll();</script><div><object classid="clsid:CA8A9780-280D-11CF-A24D-444553540000" name="PDF4" width="0" height="0" border="0"><param name="SRC" value="/pdf/test4.pdf" /></object></div><script language="JavaScript" type="text/javascript"> PDF4.printAll();</script></body></html>
实现效果如下：
