我是 Java 新手，我正在使用 Java 开发 POS 应用程序。
我为这个项目买了一台 Epson POS 打印机。打印机型号是EPSON TM-U220.
我已经安装了JavaPos，我的代码片段如下。但是在运行时出现此错误。
感谢是否有人可以帮助我解决这个问题。
run:
jpos.JposException: Service does not exist in loaded JCL registry
StarReceiptTest finished.
at jpos.loader.simple.SimpleServiceManager.createConnection(SimpleServiceManager.java:179)
at jpos.loader.JposServiceLoader.findService(JposServiceLoader.java:154)
at jpos.BaseJposControl.open(BaseJposControl.java:481)
at StarReceiptTest.main(StarReceiptTest.java:54)
BUILD SUCCESSFUL (total time: 1 second)
import jpos.JposConst;
import jpos.JposException;
import jpos.POSPrinter;
import jpos.POSPrinterConst;
import jpos.util.JposPropertiesConst;
public class StarReceiptTest
{
public static void main(String[] args){
/*
If you want to place the jpos.xml file elsewhere on your local file system then uncomment the
following line and specify the full path to jpos.xml.
If you want to place the jpos.xml file on a webserver for access over the internet then uncomment
the second System.setProperty line below and specify the full URL to jpos.xml.
*/
//C:\Users\Udayanga\Documents\NetBeansProjects\Jpos_Sample\src
//System.setProperty(JposPropertiesConst.JPOS_POPULATOR_FILE_PROP_NAME, "jpos.xml");
System.setProperty(JposPropertiesConst.JPOS_POPULATOR_FILE_PROP_NAME, "C:\\Users\\Udayanga\\Documents\\NetBeansProjects\\Jpos_Sample\\src\\jpos.xml");
//System.setProperty(JposPropertiesConst.JPOS_POPULATOR_FILE_URL_PROP_NAME, "http://some-where-remote.com/jpos.xml");
// constants defined for convience sake (could be inlined)
String ESC = ((char) 0x1b) + "";
String LF = ((char) 0x0a) + "";
String SPACES = " ";
// instantiate a new jpos.POSPrinter object
POSPrinter printer = new POSPrinter();
//ESDPRT001 = Port
try
{
// open the printer object according to the entry names defined in jpos.xml
//printer.open("startsp");
//ESDPRT001
printer.open("TM-U220");
// claim exclsive usage of the printer object
printer.claim(1);
// enable the device for input and output
printer.setDeviceEnabled(true);
// set map mode to metric - all dimensions specified in 1/100mm units
printer.setMapMode(POSPrinterConst.PTR_MM_METRIC); // unit = 1/100 mm - i.e. 1 cm = 10 mm = 10 * 100 units
do
{
// poll for printer status
// a javax.swing based application would be best to both poll for status
// AND register for asynchronous StatusUpdateEvent notification
// see the JavaPOS specification for details on this
// check if the cover is open
if (printer.getCoverOpen() == true)
{
System.out.println("printer.getCoverOpen() == true");
// cover open so do not attempt printing
break;
}
// check if the printer is out of paper
if (printer.getRecEmpty() == true)
{
System.out.println("printer.getRecEmpty() == true");
// the printer is out of paper so do not attempt printing
break;
}
// being a transaction
// transaction mode causes all output to be buffered
// once transaction mode is terminated, the buffered data is
// outputted to the printer in one shot - increased reliability
printer.transactionPrint(POSPrinterConst.PTR_S_RECEIPT, POSPrinterConst.PTR_TP_TRANSACTION);
if (printer.getCapRecBitmap() == true){
// print an image file
try
{
printer.printBitmap(POSPrinterConst.PTR_S_RECEIPT, "star.gif", POSPrinterConst.PTR_BM_ASIS, POSPrinterConst.PTR_BM_CENTER);
}
catch (JposException e)
{
if (e.getErrorCode () != JposConst.JPOS_E_NOEXIST)
{
// error other than file not exist - propogate it
throw e;
}
// image file not found - ignore this error & proceed
}
}
// call printNormal repeatedly to generate out receipt
// the following JavaPOS-POSPrinter control code sequences are used here
// ESC + "|cA" -> center alignment
// ESC + "|4C" -> double high double wide character printing
// ESC + "|bC" -> bold character printing
// ESC + "|uC" -> underline character printing
// ESC + "|rA" -> right alignment
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|cA" + ESC + "|4C" + ESC + "|bC" + "Star Grocer" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|cA" + ESC + "|bC" + "Shizuoka, Japan" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|cA" + ESC + "|bC" + "054-555-5555" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|uC" + "Qnty Unit Tx Description" + SPACES.substring(0, printer.getRecLineChars() - "Qnty Unit Tx Description".length()) + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 1 830 Soba Noodles" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 1 180 Daikon Radish" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 1 350 Shouyu Soy Sauce" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 1 80 Negi Green Onions" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 1 100 Wasabi Horse Radish" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, " 2 200 Tx Hashi Chop Sticks" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|rA" + "Subtotal: 2160" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|rA" + "Tax: 24" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|rA" + ESC + "|bC" + "Total: 2184" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|rA" + "Tender: 2200" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|rA" + ESC + "|bC" + "Change: 16" + LF);
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, LF);
if (printer.getCapRecBarCode() == true)
{
// print a Code 3 of 9 barcode with the data "123456789012" encoded
// the 10 * 100, 60 * 100 parameters below specify the barcode's height and width
// in the metric map mode (1cm tall, 6cm wide)
printer.printBarCode(POSPrinterConst.PTR_S_RECEIPT, "123456789012", POSPrinterConst.PTR_BCS_Code39, 10 * 100, 60 * 100, POSPrinterConst.PTR_BC_CENTER, POSPrinterConst.PTR_BC_TEXT_BELOW);
}
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|cA" + ESC + "|4C" + ESC + "|bC" + "Thank you" + LF);
// the ESC + "|100fP" control code causes the printer to execute a paper cut
// after feeding to the cutter position
printer.printNormal(POSPrinterConst.PTR_S_RECEIPT, ESC + "|100fP");
// terminate the transaction causing all of the above buffered data to be sent to the printer
printer.transactionPrint(POSPrinterConst.PTR_S_RECEIPT, POSPrinterConst.PTR_TP_NORMAL);
// exit our printing loop
} while (false);
}
catch(JposException e)
{
// display any errors that come up
e.printStackTrace();
}
finally
{
// close the printer object
try
{
printer.close();
}
catch (Exception e) {}
}
System.out.println("StarReceiptTest finished.");
System.exit(0);
}
这是 jpos.xml 文件
<!--Other non JavaPOS required property (mostly vendor properties and bus specific properties i.e. RS232 )-->
<prop name="Halftone" type="String" value="0"/>
<prop name="PhysicalPrinterName" type="String" value="TM-U220"/>
<prop name="NVRAMControlLevel" type="String" value="1"/>
<prop name="Stamp" type="String" value="0"/>
<prop name="OutputCompleteType" type="String" value="2"/>
<prop name="StatusThreadInterval" type="String" value="100"/>
<prop name="OutputTimeout" type="String" value="500"/>
<prop name="PortType" type="String" value="2"/>
<prop name="OutputBufferSize" type="String" value="65536"/>
<prop name="UsedNVRAM" type="String" value="0"/>
<prop name="FirmRecordLog" type="String" value="1"/>
<prop name="ReceiveTimeout" type="String" value="1000"/>
<prop name="SlpReverseEject" type="String" value="0"/>
<prop name="PortName" type="String" value="TM-U220"/>
<prop name="OfflineRetryIntervalTime" type="String" value="25"/>
<prop name="DefaultSlpClampTime" type="String" value="0"/>
<prop name="epson.trace.file" type="String" value="trace.log"/>
<prop name="AsyncProcessingSize" type="String" value="1"/>
<prop name="KanjiTwoWaysPrint" type="String" value="0"/>
<prop name="PulseStep" type="String" value="2"/>
<prop name="PortInterfaceName" type="String" value="USB"/>
<prop name="OutPipe" type="String" value="0"/>
<prop name="U375Compatible" type="String" value="0"/>
<prop name="PortNameType" type="String" value="0"/>
<prop name="preCutterFunction" type="String" value="0"/>
<prop name="epson.tracing" type="String" value="false"/>
<prop name="epson.trace.max.size" type="String" value="1000"/>
<prop name="RecPaperSize" type="String" value="76"/>
<prop name="DeviceDesc" type="String" value="EPSON TM-U220D POSPrinter"/>
<prop name="PageModeExt" type="String" value="0"/>
<prop name="SupportStatistics" type="String" value="1"/>
<prop name="FirmProgressRange" type="String" value="10"/>
<prop name="OutputErrorOption" type="String" value="0"/>
<prop name="SupportFirmware" type="String" value="0"/>
<prop name="InputTimeout" type="String" value="100"/>
<prop name="AutoPowerOff" type="String" value="0"/>
<prop name="SlpMoreColumns" type="String" value="0"/>
<prop name="RecPaperType" type="String" value="0"/>
<prop name="MemorySwitch" type="String" value="0"/>
<prop name="ReadThreadInterval" type="String" value="-1"/>
<prop name="QueuingOfflineTimeout" type="String" value="1000"/>
<prop name="InitializeThreadTime" type="String" value="1000"/>
<prop name="TwoColor" type="String" value="1"/>
<prop name="TwoByteCharacter" type="String" value="0"/>
<prop name="FirmLogFileSize" type="String" value="1000"/>
<prop name="Peeler" type="String" value="0"/>
<prop name="InPipe" type="String" value="1"/>
<prop name="ConfigurationFile" type="String" value="epson/xml/Setting/TM-U220DSetting.xml"/>
<prop name="Custom1Color" type="String" value="0xFF0000"/>
<prop name="preEndorseFunction" type="String" value="0"/>
<prop name="Upos.Spec_c" type="String" value="false"/>
<prop name="FirmNotifyAllProgressEvents" type="String" value="0"/>
<prop name="InitializeResponseTimeout" type="String" value="1000"/>
<prop name="ReceiveRetryTime" type="String" value="25"/>
<prop name="PrinterTransmitTimeout" type="String" value="30000"/>
<prop name="RecMoreColumns" type="String" value="0"/>
<prop name="UsedInterCharacterSet" type="String" value="0"/>
<prop name="WriteThreadInterval" type="String" value="-1"/>
<prop name="preORCBFunction" type="String" value="0"/>
<prop name="RecNearEndSensor" type="String" value="1"/>
<prop name="LogObject" type="String" value=""/>
<prop name="Cutter" type="String" value="0"/>
<prop name="PhysicalDevice" type="String" value="TM-U220D"/>
<prop name="UsedPeeler" type="String" value="0"/>
<prop name="FirmLogFileName" type="String" value="Firmware.log"/>
<prop name="InputBufferSize" type="String" value="4096"/>
<prop name="TransmitTimeout" type="String" value="5000"/>
<prop name="OfflineCount" type="String" value="2"/>
<prop name="TransmitRetryTime" type="String" value="100"/>
<prop name="DirectIOEventTimeout" type="String" value="5000"/>