java
Javaを使用して、サーマルプリンターでレシートを印刷する必要があります。私はすべてをやった。私のプログラムはデータベースからデータを取得し、特殊文字、タブ、\ nを使用して1つの文字列に変換します。次に、文字列はグラフィックスに変換する別のメソッドに渡されます。
問題は、印刷ボタンをクリックすると白い紙が出てくることです。文字列の最初の4〜5文字が紙幣の右端の請求書の最後の行に印刷されていることに気付きました。私のプリンターはEpson TM-T81です。
public void printThisBill()
{
DefaultTableModel mod = (DefaultTableModel) jTable1.getModel();
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
DateFormat timeFormat = new SimpleDateFormat("HH:mm");
//get current date time with Date()
Date date = new Date();
Date time = new Date();
String Date = dateFormat.format(date);
String Time = timeFormat.format(time);
String Header =
" ****Super Market**** \n"
+ "Date: "+Date+" Time: "+Time+"\n"
+ "---------------------------------\n"
+ "Name Qty Rate Amt\n"
+ "---------------------------------\n";
String amt =
"\n \n \nTotal Amount = "+ amt() +"\n"
+ "Tax =" + tax() + "\n"
+ "*********************************\n"
+ "Thank you. \n";
String bill = Header;
int i = 0;
do
{
String name = ""+ mod.getValueAt(i, 2);
String qty = ""+ mod.getValueAt(i, 3);
String rate = ""+ mod.getValueAt(i, 4);
String amount = ""+ mod.getValueAt(i, 6);
if(name.length() > 12)
{
name = name.substring(0, 12)+" ";
}
else
{
for(int j= name.length()-12; j<= name.length(); j++);
{
name = name+" ";
}
}
if(qty.length()<=5)
{
for(int j= 0; j<= qty.length()-5; j++);
{
qty = qty+" ";
}
}
rate = rate;
String items =
name+"\t"+qty+"\t"+rate+"\t"+amount+"\n";
bill = bill+ items;
i++;
} while(i <= mod.getRowCount()-1);
bill = bill+amt;
System.out.println(bill);
printCard(bill);
dispose();
}
請求書を印刷する方法は次のとおりです。
public static void printCard(final String bill )
{
Printable contentToPrint = new Printable(){
@Override
public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException
{
if (page > 0) {
return NO_SUCH_PAGE;
}
pageFormat.setOrientation(PageFormat.LANDSCAPE);
Graphics2D g2d = (Graphics2D)graphics.create();
g2d.setPaint(Color.black);
g2d.setFont(new Font("Arial", Font.BOLD, 10));
g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableX());
g2d.drawString(bill, 0, 0);
return PAGE_EXISTS;
}
};
PrinterJob job = PrinterJob.getPrinterJob();
job.setPrintable(contentToPrint);
//You can show a print dialog before printing by job by wrapping the following blocks with a conditional statement if(job.printDialog()){...}
try
{
job.print();
} catch (PrinterException e)
{
System.err.println(e.getMessage());
}
}
問題は何ですか？どのように解決できますか？ drawString（）メソッドで正しいパラメータを設定していないと思います。
それとも別のものですか？どんな助けも私に感謝します。
私はこれを見つけました：
それは私のために働いた。外部ライブラリは必要ありません。
import Java.awt.Font;
import Java.awt.Graphics;
import Java.awt.Graphics2D;
import Java.awt.print.PageFormat;
import Java.awt.print.Printable;
import Java.awt.print.PrinterException;
import Java.util.ArrayList;
import Java.util.List;
import javax.print.Doc;
import javax.print.DocFlavor;
import javax.print.DocPrintJob;
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
import javax.print.SimpleDoc;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
public class PrinterService implements Printable {
public List<String> getPrinters(){
DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
PrintService printServices[] = PrintServiceLookup.lookupPrintServices(
flavor, pras);
List<String> printerList = new ArrayList<String>();
for(PrintService printerService: printServices){
printerList.add( printerService.getName());
}
return printerList;
}
@Override
public int print(Graphics g, PageFormat pf, int page)
throws PrinterException {
if (page > 0) { /* We have only one page, and 'page' is zero-based */
return NO_SUCH_PAGE;
}
/*
* User (0,0) is typically outside the imageable area, so we must
* translate by the X and Y values in the PageFormat to avoid clipping
*/
Graphics2D g2d = (Graphics2D) g;
g2d.translate(pf.getImageableX(), pf.getImageableY());
/* Now we perform our rendering */
g.setFont(new Font("Roman", 0, 8));
g.drawString("Hello world !", 0, 10);
return PAGE_EXISTS;
}
public void printString(String printerName, String text) {
// find the printService of name printerName
DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
PrintService printService[] = PrintServiceLookup.lookupPrintServices(
flavor, pras);
PrintService service = findPrintService(printerName, printService);
DocPrintJob job = service.createPrintJob();
try {
byte[] bytes;
// important for umlaut chars
bytes = text.getBytes("CP437");
Doc doc = new SimpleDoc(bytes, flavor, null);
job.print(doc, null);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void printBytes(String printerName, byte[] bytes) {
DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
PrintRequestAttributeSet pras = new HashPrintRequestAttributeSet();
PrintService printService[] = PrintServiceLookup.lookupPrintServices(
flavor, pras);
PrintService service = findPrintService(printerName, printService);
DocPrintJob job = service.createPrintJob();
try {
Doc doc = new SimpleDoc(bytes, flavor, null);
job.print(doc, null);
} catch (Exception e) {
e.printStackTrace();
}
}
private PrintService findPrintService(String printerName,
PrintService[] services) {
for (PrintService service : services) {
if (service.getName().equalsIgnoreCase(printerName)) {
return service;
}
}
return null;
}
}
そしてメインクラス：
public class Main {
public static void main(String[] args) {
PrinterService printerService = new PrinterService();
System.out.println(printerService.getPrinters());
//print some stuff. Change the printer name to your thermal printer name.
printerService.printString("EPSON-TM-T20II", "\n\n testing testing 1 2 3eeeee \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
// cut that paper!
byte[] cutP = new byte[] { 0x1d, 'V', 1 };
printerService.printBytes("EPSON-TM-T20II", cutP);
}
}
うーん、、、私はあなたがあなたのプリンターのためにESC/POSコマンドを使うべきだと思う、 Epson TM-T81 のためのプリンター技術マニュアルを読んでください。 TM-U220Dでも同様の問題があり、そのためのクラスを作成しました。プリンターが異なるため、これは役に立たないかもしれませんが、とにかくそれを参照として添付しています：
//------------------------
//-- PrinterOptions.Java
//------------------------
public class PrinterOptions {
String commandSet = "";
public String initialize() {
final byte[] Init = {27, 64};
commandSet += new String(Init);
return new String(Init);
}
public String chooseFont(int Options) {
String s = "";
final byte[] ChooseFontA = {27, 77, 0};
final byte[] ChooseFontB = {27, 77, 1};
final byte[] ChooseFontC = {27, 77, 48};
final byte[] ChooseFontD = {27, 77, 49};
switch(Options) {
case 1:
s = new String(ChooseFontA);
break;
case 2:
s = new String(ChooseFontB);
break;
case 3:
s = new String(ChooseFontC);
break;
case 4:
s = new String(ChooseFontD);
break;
default:
s = new String(ChooseFontB);
}
commandSet += s;
return new String(s);
}
public String feedBack(byte lines) {
final byte[] Feed = {27,101,lines};
String s = new String(Feed);
commandSet += s;
return s;
}
public String feed(byte lines) {
final byte[] Feed = {27,100,lines};
String s = new String(Feed);
commandSet += s;
return s;
}
public String alignLeft() {
final byte[] AlignLeft = {27, 97,48};
String s = new String(AlignLeft);
commandSet += s;
return s;
}
public String alignCenter() {
final byte[] AlignCenter = {27, 97,49};
String s = new String(AlignCenter);
commandSet += s;
return s;
}
public String alignRight() {
final byte[] AlignRight = {27, 97,50};
String s = new String(AlignRight);
commandSet += s;
return s;
}
public String newLine() {
final byte[] LF = {10};
String s = new String(LF);
commandSet += s;
return s;
}
public String reverseColorMode(boolean enabled) {
final byte[] ReverseModeColorOn = {29, 66, 1};
final byte[] ReverseModeColorOff = {29, 66, 0};
String s = "";
if(enabled)
s = new String(ReverseModeColorOn);
else
s = new String(ReverseModeColorOff);
commandSet += s;
return s;
}
public String doubleStrik(boolean enabled) {
final byte[] DoubleStrikeModeOn = {27, 71, 1};
final byte[] DoubleStrikeModeOff = {27, 71, 0};
String s="";
if(enabled)
s = new String(DoubleStrikeModeOn);
else
s = new String(DoubleStrikeModeOff);
commandSet += s;
return s;
}
public String doubleHeight(boolean enabled) {
final byte[] DoubleHeight = {27, 33, 17};
final byte[] UnDoubleHeight={27, 33, 0};
String s = "";
if(enabled)
s = new String(DoubleHeight);
else
s = new String(UnDoubleHeight);
commandSet += s;
return s;
}
public String emphasized(boolean enabled) {
final byte[] EmphasizedOff={27 ,0};
final byte[] EmphasizedOn={27 ,1};
String s="";
if(enabled)
s = new String(EmphasizedOn);
else
s = new String(EmphasizedOff);
commandSet += s;
return s;
}
public String underLine(int Options) {
final byte[] UnderLine2Dot = {27, 45, 50};
final byte[] UnderLine1Dot = {27, 45, 49};
final byte[] NoUnderLine = {27, 45, 48};
String s = "";
switch(Options) {
case 0:
s = new String(NoUnderLine);
break;
case 1:
s = new String(UnderLine1Dot);
break;
default:
s = new String(UnderLine2Dot);
}
commandSet += s;
return new String(s);
}
public String color(int Options) {
final byte[] ColorRed = {27, 114, 49};
final byte[] ColorBlack = {27, 114, 48};
String s = "";
switch(Options) {
case 0:
s = new String(ColorBlack);
break;
case 1:
s = new String(ColorRed);
break;
default:
s = new String(ColorBlack);
}
commandSet += s;
return s;
}
public String finit() {
final byte[] FeedAndCut = {29, 'V', 66, 0};
String s = new String(FeedAndCut);
final byte[] DrawerKick={27,70,0,60,120};
s += new String(DrawerKick);
commandSet+=s;
return s;
}
public String addLineSeperator() {
String lineSpace = "----------------------------------------";
commandSet += lineSpace;
return lineSpace;
}
public void resetAll() {
commandSet = "";
}
public void setText(String s) {
commandSet+=s;
}
public String finalCommandSet() {
return commandSet;
}
}
feedPrinter（）-メソッド
private static boolean feedPrinter(byte[] b) {
try {
AttributeSet attrSet = new HashPrintServiceAttributeSet(new PrinterName("EPSON TM-U220 ReceiptE4", null)); //EPSON TM-U220 ReceiptE4
DocPrintJob job = PrintServiceLookup.lookupPrintServices(null, attrSet)[0].createPrintJob();
//PrintServiceLookup.lookupDefaultPrintService().createPrintJob();
DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
Doc doc = new SimpleDoc(b, flavor, null);
PrintJobWatcher pjDone = new PrintJobWatcher(job);
job.print(doc, null);
pjDone.waitForDone();
System.out.println("Done !");
} catch (javax.print.PrintException pex) {
System.out.println("Printer Error " + pex.getMessage());
return false;
} catch(Exception e) {
e.printStackTrace();
return false;
}
return true;
}
今請求書を準備します:)
PrinterOptions p=new PrinterOptions();
p.resetAll();
p.initialize();
p.feedBack((byte)2);
p.color(0);
p.alignCenter();
p.setText("The Dum Dum Name");
p.newLine();
p.setText("Restaurant Dining");
p.newLine();
p.addLineSeperator();
p.setText("Bling Bling");
p.newLine();
p.addLineSeperator();
p.newLine();
p.alignLeft();
p.setText("POD No \t: 2001 \tTable \t: E511");
p.newLine();
p.setText("Res Date \t: " + "01/01/1801 22:59");
p.newLine();
p.setText("Session \t: Evening Session");
p.newLine();
p.setText("Staff \t: Bum Dale");
p.newLine();
p.addLineSeperator();
p.newLine();
p.alignCenter();
p.setText(" - Some Items - ");
p.newLine();
p.alignLeft();
p.addLineSeperator();
p.newLine();
p.setText("No \tItem\t\tUnit\tQty");
p.newLine();
p.addLineSeperator();
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.setText("1" + "\t" + "Aliens Everywhere" + "\t" + "Rats" + "\t" + "500");
p.addLineSeperator();
p.feed((byte)3);
p.finit();
feedPrinter(p.finalCommandSet().getBytes());