近期因为项目的需求,需要使用到打印机来打印业务相关的条形码和其他信息,由于之前有操作其它打印机的经验,Leader就安排我来做这个了(凑哦,这能说我是懵逼的么)。于是就开始了我的探索之旅啦,不对,是踩坑之旅,总的来说还是蛮顺利的,这里就稍微总结一下经验。
ZPL(Zebra Programming Language)是斑马公司自主设计的语言(斑马公司的业务主要是制作斑马条形码打印机)。如今大部分条码打印机都是能够识别ZPL指令的,我们能够用ZPL指令编写一个模板,然后将自己主动生成的条形码值(字符串)依照一定格式格式化成新的字符串。然后将这些内容传入打印机就可以。
下面是ZPL语言的含义:
^XA——开始标签格式
^LH0,0——打印的原点位置
^F0203,203——文本开始位置
^ADN,30,30——字体类型与大小
^FDExampleString——打印正文字符串,FD后为打印的内容
^FS ——无特殊含义,一般用在一段指令段的结尾
^XZ ——结束标签格式
^BY2.0,3.0——条码线条的粗细
^B7N,5,3,,,N ——二维码的长宽比
^BCN,120,Y,N,N,A——条形码的高度
了解上面的这些指令之后就可以写一个完整的指令,来打印条形码。
^XA^LH10,10^FO90,60^ADN,20,10^BY2.0,3.0^BCN,120,Y,N,N,A^FDL000001^FS^XZ
除了上面的指令之外,当然还需要指令的发出者——后台代码,这里我是用Android(Java代码)实现的,下面贴出代码,希望能给有需要的人一些参考。
import com.tao.admin.loglib.Logger;import com.zebra.sdk.comm.BluetoothConnection;import com.zebra.sdk.comm.Connection;import com.zebra.sdk.comm.ConnectionException;import com.zebra.sdk.comm.TcpConnection;import com.zebra.sdk.printer.PrinterLanguage;import com.zebra.sdk.printer.ZebraPrinter;import com.zebra.sdk.printer.ZebraPrinterFactory;import com.zebra.sdk.printer.ZebraPrinterLanguageUnknownException;public class PrinterHelper { private static ZebraPrinter printer; private static Connection printerConnection; public static void printStr(final String printStr){ //新开线程中执行打印操作 new Thread(new Runnable() { @Override public void run() { printer = connect(); if (printer != null) { sendLabel(printer,printerConnection,printStr); } else { disconnect(printerConnection); } } }).start(); } public static ZebraPrinter connect() { printerConnection = null; try { int port = Integer.parseInt("9100"); //和打印机1对1匹配 printerConnection = new TcpConnection("10.240.161.228", port); } catch (NumberFormatException e) { Logger.e("Printer Error 1", e.getMessage()); return null; } try { printerConnection.open(); } catch (ConnectionException e) { Logger.e("Printer Error 2-1", e.getMessage()); PrinterHelper.disconnect(printerConnection); } ZebraPrinter printer = null; if (printerConnection.isConnected()) { try { printer = ZebraPrinterFactory.getInstance(printerConnection); PrinterLanguage pl = printer.getPrinterControlLanguage(); } catch (ConnectionException e) { Logger.e("Printer Error 2-2", e.getMessage()); printer = null; PrinterHelper.disconnect(printerConnection); } catch (ZebraPrinterLanguageUnknownException e) { Logger.e("Printer Error 3", e.getMessage()); printer = null; PrinterHelper.disconnect(printerConnection); } } return printer; } private static void sendLabel(ZebraPrinter printer,Connection printerConnection,String printStr) { try { byte[] configLabel = getConfigLabel(printer,printerConnection,printStr); printerConnection.write(configLabel); if (printerConnection instanceof BluetoothConnection) { String friendlyName = ((BluetoothConnection) printerConnection).getFriendlyName(); } } catch (ConnectionException e) { Logger.e("Printer Error 2-3", e.getMessage()); } finally { disconnect(printerConnection); } } /** * 发送打印指令到打印机 * @return */ private static byte[] getConfigLabel(ZebraPrinter printer,Connection printerConnection,String printStr) { PrinterLanguage printerLanguage = printer.getPrinterControlLanguage(); byte[] configLabel = null; if (printerLanguage == PrinterLanguage.ZPL) { Logger.e("Print Language","ZPL"); configLabel = ("^XA^LH10,10^FO90,60^ADN,20,10^BY2.0,3.0^BCN,120,Y,N,N,A^FD"+printStr+"^FS^XZ").getBytes(); } else if (printerLanguage == PrinterLanguage.CPCL) { Logger.e("Print Language","CPCL"); String cpclConfigLabel = "! 0 200 200 406 1\r\n" + "ON-FEED IGNORE\r\n" + "BOX 20 20 380 380 8\r\n" + "T 0 6 137 177 TEST\r\n" + "PRINT\r\n"; configLabel = cpclConfigLabel.getBytes(); } return configLabel; } public static void disconnect(Connection printerConnection) { try { if (printerConnection != null) { printerConnection.close(); } } catch (ConnectionException e) { Logger.e("Printer Error 2-4", e.getMessage()); } }}
调用打印机打印条形码:PrinterHelper.printStr("L000001");
注意:1,打印机必须要和发指令的设备(比如手机,扫描机)联网,可以通过wifi或者蓝牙,建议使用蓝牙,因为比较稳定。
2,使用上面代码记得导入相关的jar包(在build.gradle里加入api files('libs/ZSDK_ANDROID_API.jar')的dependency)。
码字不易,如果觉得有帮助,一定要给我点赞哟~~
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