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我正在編寫程序來生成標籤並使用標籤紙打印標準打印標籤。我可以創建一張圖像並保存，但是，我在標籤紙上打印圖像時遇到問題。它是空白的。我可以將圖像寫入磁盤並打開圖像，它似乎是一個有效的圖像。但是，無論我做什麼，我都無法打印它。我寫了一個測試程序來嘗試打印它無濟於事。我從網上下載了一張圖片，並能夠打印該圖片。無法將標籤打印到打印機
創建的標籤需要打印在標籤紙上（從上到下包含6個標籤）。我需要創建一個標籤並從表單上的所需標籤開始打印。
LabelImage類爲標籤創建圖像。圖像最多可以在標籤左側打印4位數字（順時針旋轉90度），然後顯示一些字符串值。我不得不在單獨的圖像中創建數字，因爲我無法在單個圖像中正確旋轉數字。
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Stroke;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
public class LabelImage {
public static final Map <String, Color> ColorMap = new HashMap <>();
// Define label size
public static final int LABEL_WIDTH = 830;
public static final int LABEL_HALF_WIDTH = LABEL_WIDTH/2;
public static final int LABEL_HEIGHT = 190;
public static final int LABEL_HALF_HEIGHT = LABEL_HEIGHT/2;
// Define rectangle to print out digits in for the label
public static final int LEFT_DIGIT_RECT_TLX = 15;
public static final int LEFT_DIGIT_RECT_TLY = 30;
public static final int LEFT_DIGIT_RECT_WIDTH = 80;
public static final int LEFT_DIGIT_RECT_HEIGHT = (LABEL_HEIGHT - (LEFT_DIGIT_RECT_TLY * 2));
public static final int LEFT_DIGIT_TLX_OFFSET = -10;
public static final int LEFT_DIGIT_TLY_OFFSET = 15;
public static final int LEFT_DIGIT_ROTATE_X = LEFT_DIGIT_RECT_WIDTH/2;
public static final int LEFT_DIGIT_ROTATE_Y = LEFT_DIGIT_RECT_TLY + (LEFT_DIGIT_RECT_HEIGHT/4);
public static final int LEFT_DIGIT_ROTATE_Y2 = LEFT_DIGIT_ROTATE_Y + (LEFT_DIGIT_RECT_HEIGHT/2);
// Create a separate image of the digits, then rotate the image
public static final int LEFT_DIGIT_TLX = 20;
public static final int LEFT_DIGIT_TLX2 = (LEFT_DIGIT_RECT_HEIGHT/2) + LEFT_DIGIT_TLX;
public static final int LEFT_DIGIT_TLY = (LEFT_DIGIT_RECT_WIDTH - 25);
public static final int ROTATE_X = 0;
public static final int ROTATE_Y = 0;
public static final float DIGIT_FRAME_THICKNESS = 5;
public static final int CLIENT_ID_X = 380;
public static final int CLIENT_ID_Y = 30;
public static final int CLIENT_ID_Y2 = LABEL_HALF_HEIGHT + CLIENT_ID_Y;
public static final int CLIENT_NAME_X = 450;
public static final int CLIENT_NAME_Y = 30;
public static final int CLIENT_NAME_Y2 = LABEL_HALF_HEIGHT + CLIENT_NAME_Y;
public static final int PROJECT_NAME_X = CLIENT_NAME_X;
public static final int PROJECT_NAME_Y = 50;
public static final int PROJECT_NAME_Y2 = LABEL_HALF_HEIGHT + PROJECT_NAME_Y;
public static final int OTHER_X = CLIENT_ID_X;
public static final int OTHER_Y = 70;
public static final int OTHER_Y2 = LABEL_HALF_HEIGHT + OTHER_Y;
Font normalFont = new Font("TimesRoman", Font.BOLD, 14);
Font leftDigitFont = new Font("TimesRoman", Font.BOLD, 42);
static {
ColorMap.put("0", new Color(255, 120, 130, 100));
ColorMap.put("1", new Color(252, 0, 105, 100));
ColorMap.put("2", new Color(255, 165, 10, 100));
ColorMap.put("3", new Color(255, 85, 10, 100));
ColorMap.put("4", new Color(122, 252, 12, 100));
ColorMap.put("5", new Color(0, 145, 0, 100));
ColorMap.put("6", new Color(60, 255, 255, 100));
ColorMap.put("7", new Color(40, 0, 120, 100));
ColorMap.put("8", new Color(222, 182, 245, 100));
ColorMap.put("9", new Color(145, 55, 0, 100));
ColorMap.put("0", new Color(196, 23, 27, 100));
ColorMap.put("1", new Color(232, 85, 66, 100));
ColorMap.put("2", new Color(236, 131, 101, 100));
ColorMap.put("3", new Color(230, 229, 48, 100));
ColorMap.put("4", new Color(184, 224, 101, 100));
ColorMap.put("5", new Color(53, 161, 19, 100));
ColorMap.put("6", new Color(66, 142, 232, 100));
ColorMap.put("7", new Color(98, 83, 234, 100));
ColorMap.put("8", new Color(26, 15, 126, 100));
ColorMap.put("9", new Color(95, 17, 143, 100));
}
/**
* Prints a digit on the left hand side of the label, rotated 90 degrees
* clockwise. At the specified digit location.
* @param digit the digit to print
* @param ndx the index location to print at
*/
private void printLeftDigit(Graphics2D g2, String digit, int ndx) {
// find the top-left coordinate of the rectangle
int tlx = LEFT_DIGIT_RECT_TLX + (LEFT_DIGIT_RECT_WIDTH * ndx);
int tly = LEFT_DIGIT_RECT_TLY;
// Draw the colored rectangle
Color origColor = g2.getColor();
g2.setColor(ColorMap.get(digit));
g2.fillRect(tlx, tly, LEFT_DIGIT_RECT_WIDTH, LEFT_DIGIT_RECT_HEIGHT);
g2.setColor(origColor);
// Draw a black outline for the box over the rectangle
Stroke oldStroke = g2.getStroke();
g2.setStroke(new BasicStroke(DIGIT_FRAME_THICKNESS));
g2.drawRect(tlx, tly, LEFT_DIGIT_RECT_WIDTH-1, LEFT_DIGIT_RECT_HEIGHT);
g2.setStroke(oldStroke);
// Center of digit to rotate around
int cdx = tlx + LEFT_DIGIT_ROTATE_X;
// Write the digit in the rectangle
AffineTransform origTransform = g2.getTransform();
g2.setFont(leftDigitFont);
//g2.rotate(Math.PI/25);
double angle = Math.toRadians(90.0);
g2.setColor(Color.BLACK);
g2.rotate(angle, cdx, LEFT_DIGIT_ROTATE_Y);
g2.drawString(digit, cdx + LEFT_DIGIT_TLX_OFFSET, LEFT_DIGIT_ROTATE_Y + LEFT_DIGIT_TLY_OFFSET);
g2.setTransform(origTransform);
//g2.setColor(Color.GREEN);
g2.rotate(angle, cdx, LEFT_DIGIT_ROTATE_Y2);
g2.drawString(digit, cdx + LEFT_DIGIT_TLX_OFFSET, LEFT_DIGIT_ROTATE_Y2 + LEFT_DIGIT_TLY_OFFSET);
g2.setTransform(origTransform);
}
/**
* This method creates a 2nd image for the digits, then rotates the image and puts it
* over the label image.
*
* @param g2
* @param digit
* @param ndx
*/
private void printLeftDigit2(Graphics2D g2, String digit, int ndx) {
// Width is the top to bottom rectangle size
// height is the left to right rectangle width (because it will be rotated)
//BufferedImage image = new BufferedImage(LEFT_DIGIT_RECT_HEIGHT, LEFT_DIGIT_RECT_WIDTH, BufferedImage.TYPE_INT_ARGB);
BufferedImage image = new BufferedImage(LEFT_DIGIT_RECT_HEIGHT, LEFT_DIGIT_RECT_WIDTH, BufferedImage.TYPE_INT_RGB);
Graphics2D imageGraphics = image.createGraphics();
// Fill the rectangle with the expected color
imageGraphics.setColor(ColorMap.get(digit));
imageGraphics.fillRect(0, 0, LEFT_DIGIT_RECT_HEIGHT, LEFT_DIGIT_RECT_WIDTH);
// Draw a black outline for the box over the rectangle
imageGraphics.setColor(Color.BLACK);
Stroke oldStroke = imageGraphics.getStroke();
imageGraphics.setStroke(new BasicStroke(DIGIT_FRAME_THICKNESS));
imageGraphics.drawRect(0, 0, LEFT_DIGIT_RECT_HEIGHT, LEFT_DIGIT_RECT_WIDTH);
imageGraphics.setStroke(oldStroke);
// Draw the Digits in the rectangle (top-left of digit)
imageGraphics.setFont(leftDigitFont);
imageGraphics.drawString(digit, LEFT_DIGIT_TLX, LEFT_DIGIT_TLY);
imageGraphics.drawString(digit, LEFT_DIGIT_TLX2, LEFT_DIGIT_TLY);
imageGraphics.dispose();
// Put the image on the current graphic
AffineTransform aff = g2.getTransform();
double theta = Math.toRadians(90.0);
//AffineTransform rotate = AffineTransform.getRotateInstance(theta, rotx, roty);
//(x,y) = middle of rectangle
AffineTransform rotate = AffineTransform.getRotateInstance(theta, 40, 65);
//x >0 moves down; <0 moves up
//y >0: moves left; <0: moves right
int moveright = 15 - (ndx * LEFT_DIGIT_RECT_WIDTH);
rotate.translate(10, moveright);
//g2.drawImage(image, rotate, this);
}
public BufferedImage createImageWithText(ClientProject clientProject){
//ARGB = transparent
BufferedImage bufferedImage = new BufferedImage(830, 190,BufferedImage.TYPE_INT_ARGB);
Graphics g = bufferedImage.getGraphics();
g.setColor(Color.YELLOW);
g.fillRoundRect(0, 0, LABEL_WIDTH, LABEL_HEIGHT, 10, 10);
String clientId = String.valueOf(clientProject.getClientId());
String clientName = clientProject.getClientName();
String projectName = clientProject.getProjectName();
String created = "DFC: " + DateUtil.format(clientProject.getCreated(), DateUtil.LABEL_DATE_PATTERN);
// Setup for drawing to screen
g.setColor(Color.BLACK);
g.setFont(normalFont);
g.drawLine(0, LABEL_HALF_HEIGHT, LABEL_WIDTH, LABEL_HALF_HEIGHT);
// write client id on tabs
String tmp = clientId;
if (clientId.length() > 4) {
tmp = tmp.substring(0, 4);
System.out.println("tmp = " + tmp);
}
StringBuilder sb = new StringBuilder(tmp);
sb.reverse();
for (int ndx=0; ndx < sb.length(); ndx++) {
try {
printLeftDigit2((Graphics2D)g, String.valueOf(sb.charAt(ndx)), ndx);
} catch (NumberFormatException e) {
}
}
// Write client id
g.setFont(normalFont);
g.drawString(clientId, CLIENT_ID_X, CLIENT_ID_Y);
g.drawString(clientId, CLIENT_ID_X, CLIENT_ID_Y2);
// Write Client Name
g.drawString(clientName, CLIENT_NAME_X, CLIENT_NAME_Y);
g.drawString(clientName, CLIENT_NAME_X, CLIENT_NAME_Y2);
// Write Project Name
g.drawString(projectName, PROJECT_NAME_X, PROJECT_NAME_Y);
g.drawString(projectName, PROJECT_NAME_X, PROJECT_NAME_Y2);
// Write created
g.drawString(created, OTHER_X, OTHER_Y);
g.drawString(created, OTHER_X, OTHER_Y2);
return bufferedImage;
}
}
該PrintLabel程序是應該將圖像打印到標籤紙，但我不能讓它打印由上述代碼創建的圖像。我從網上的其他地方上過這門課，並試圖修改它以達到我的目的。
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.Printable;
import static java.awt.print.Printable.NO_SUCH_PAGE;
import static java.awt.print.Printable.PAGE_EXISTS;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.ImageIO;
public class PrintLabel {
protected static double fromCMToPPI(double cm) {
return toPPI(cm * 0.393700787);
}
protected static double toPPI(double inch) {
return inch * 72d;
}
protected static String dump(Paper paper) {
StringBuilder sb = new StringBuilder(64);
sb.append(paper.getWidth()).append("x").append(paper.getHeight())
.append("/").append(paper.getImageableX()).append("x").
append(paper.getImageableY()).append(" - ").append(paper
.getImageableWidth()).append("x").append(paper.getImageableHeight());
return sb.toString();
}
protected static String dump(PageFormat pf) {
Paper paper = pf.getPaper();
return dump(paper);
}
public void process() {
PrinterJob pj = PrinterJob.getPrinterJob();
if (pj.printDialog()) {
PageFormat pf = pj.defaultPage();
Paper paper = pf.getPaper();
double width = fromCMToPPI(20.3);
double height = fromCMToPPI(25.4);
paper.setSize(width, height);
paper.setImageableArea(
fromCMToPPI(0.25),
fromCMToPPI(0.5),
width - fromCMToPPI(0.35),
height - fromCMToPPI(1));
System.out.println("Before- " + dump(paper));
pf.setOrientation(PageFormat.PORTRAIT);
pf.setPaper(paper);
System.out.println("After- " + dump(paper));
System.out.println("After- " + dump(pf));
//dump(pf);
PageFormat validatePage = pj.validatePage(pf);
System.out.println("Valid- " + dump(validatePage));
MyPrintable printable = new MyPrintable();
printable.labels.add(new ClientProject(112, 208, "Taxes", "Tax Refund"));
printable.determinePageCount();
pj.setPrintable(printable, pf);
try {
pj.print();
} catch (PrinterException ex) {
ex.printStackTrace();
}
}
}
public static void main(String[] args) {
PrintLabel pl = new PrintLabel();
pl.process();
}
public class MyPrintable implements Printable {
public int startAtLabel = 0;
public int totalPages = 0;
public List <ClientProject> labels = new ArrayList <>();
private List <ClientProject> printed = new ArrayList <>();
/**
* Determines how many pages to print, there are 6 labels per page. If we
* start at index 5 (the last one) and there are 2 labels, there are 2
* pages to print.
*/
public void determinePageCount() {
int max = this.startAtLabel + this.labels.size();
this.totalPages = max/6;
if ((max % 6) != 0) {
this.totalPages++;
}
}
@Override
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex)
throws PrinterException {
System.out.println(pageIndex);
int result = NO_SUCH_PAGE;
// first page is index 0, if 1 page max index is 0
if (pageIndex < this.totalPages) {
Graphics2D g2d = (Graphics2D) graphics;
System.out.println("[Print] " + dump(pageFormat));
double width = pageFormat.getImageableWidth();
double height = pageFormat.getImageableHeight();
g2d.translate((int) pageFormat.getImageableX(),
(int) pageFormat.getImageableY());
System.out.printf("wxh = (%fx%f)", width,height);
// Max of 6 labels per page
int maxLabelsOnPage = 6;
if (pageIndex == 0) {
maxLabelsOnPage = 6 - startAtLabel;
}
// Loop for up to the max number of labels or until we run out
// of labels
for (int labelCnt=0; labelCnt < maxLabelsOnPage; labelCnt++) {
// We have run out of labels and there is nothing left to print
if (this.labels.isEmpty()) {
break;
}
// Remove the label from the list and add it to the printed list
ClientProject cp = this.labels.remove(0);
this.printed.add(cp);
// Create the image for the label
BufferedImage image = null;
try {
// Create the image for the label
LabelImage li = new LabelImage();
BufferedImage bi = li.createImageWithText(cp);
// Load the label image
//image = ImageIO.read(new File("C:\\Consulting\\Development\\JJCPA\\finland.png"));
System.out.printf("image %d x %d%n", bi.getWidth(), bi.getHeight());
// Draw the image at the label offset
graphics.drawImage(bi, 0, 0, bi.getWidth(), bi.getHeight(), null);
// Write to a file to verify the image is valid
File outputfile = new File("image.png");
ImageIO.write(bi, "png", outputfile);
} catch (IOException e) {
}
}
result = PAGE_EXISTS;
}
return result;
}
}
}
ClientProject是一個簡單的數據結構。
public class ClientProject {
private final SimpleIntegerProperty projectId;
private final SimpleIntegerProperty clientId;
private final SimpleStringProperty category;
private final SimpleStringProperty type;
private final SimpleStringProperty projectDesc;
private final SimpleStringProperty projectName;
private final SimpleStringProperty projectName2;
private final SimpleStringProperty fileOrBinder;
private final ObjectProperty <LocalDate> created;
private final ObjectProperty <LocalDate> destroyed;
這是一個非常多的不必要的代碼 - 你能提供一個[最小的，完整的和可驗證的]（http://stackoverflow.com/help/mcve）的例子嗎？ – Jerrybibo
這是完整的示例程序。我只是一個測試打印：阿貝爾計劃，簡單地從文件加載一個圖像，並打印它，它的工作。我在這裏創建了一個PrintLabel應用程序不喜歡的圖像。我無法弄清楚它是什麼。除了刪除一些調試（這是我的錯誤沒有得到它全部），沒有太多的刪除，將離開正在運行的程序與我試圖解決的問題。 – user1777296