由於公司一個地方需要用到圖片轉換ZPL格式去打印;這裏的ZPL格式是打印斑馬打印機,這裏面有一些小的地方是需要注意的.
由於斑馬打印機的型號不一樣，設置不一樣,外加自身的圖片格式(.jpg,.png的不一樣),圖片的高度和寬度也不一樣，就會直接導致打印出來的東西和你理想中的效果不一樣，所以這裏就需要設置圖片的參數和斑馬打印機自身的參數等設置。
然後下面貼出來圖片轉換爲ZPL格式的代碼,也可以當一個工具類來進行使用。
public class ZPLConveterUtils {
private int blackLimit = 380;
private int total;
private int widthBytes;
private boolean compressHex = false;
private static Map<Integer, String> mapCode = new HashMap<Integer, String>();
{
mapCode.put(1, "G");
mapCode.put(2, "H");
mapCode.put(3, "I");
mapCode.put(4, "J");
mapCode.put(5, "K");
mapCode.put(6, "L");
mapCode.put(7, "M");
mapCode.put(8, "N");
mapCode.put(9, "O");
mapCode.put(10, "P");
mapCode.put(11, "Q");
mapCode.put(12, "R");
mapCode.put(13, "S");
mapCode.put(14, "T");
mapCode.put(15, "U");
mapCode.put(16, "V");
mapCode.put(17, "W");
mapCode.put(18, "X");
mapCode.put(19, "Y");
mapCode.put(20, "g");
mapCode.put(40, "h");
mapCode.put(60, "i");
mapCode.put(80, "j");
mapCode.put(100, "k");
mapCode.put(120, "l");
mapCode.put(140, "m");
mapCode.put(160, "n");
mapCode.put(180, "o");
mapCode.put(200, "p");
mapCode.put(220, "q");
mapCode.put(240, "r");
mapCode.put(260, "s");
mapCode.put(280, "t");
mapCode.put(300, "u");
mapCode.put(320, "v");
mapCode.put(340, "w");
mapCode.put(360, "x");
mapCode.put(380, "y");
mapCode.put(400, "z");
}
public void setCompressHex(boolean compressHex) {
this.compressHex = compressHex;
}
public void setBlacknessLimitPercentage(int percentage) {
this.blackLimit = (percentage * 768 / 100);
}
private String headDoc() {
String str = "^XA " + "^FO0,0^GFA," + total + "," + total + "," + widthBytes + ", ";
return str;
}
private String footDoc() {
String str = "^FS" + "^XZ";
return str;
}
/**
* Image to zpi string data.
*
* @param image
* @return
* @throws IOException
*/
public String convertfromImg(BufferedImage image) throws IOException {
String cuerpo = createBody(image);
if (compressHex) {
cuerpo = encodeHexAscii(cuerpo,20);
}
return headDoc() + cuerpo + footDoc();
}
/* public static void main(String[] args) throws Exception {
resizeImage("image/gavin2019GY-HCK-21099224.jpg","image/cc.png",810,1220);
File file = new File("image/cc.png");
BufferedImage orginalImage = ImageIO.read(file);
ZPLConveterUtils zpl = new ZPLConveterUtils();
zpl.setCompressHex(true);
zpl.setBlacknessLimitPercentage(50);
String content = zpl.convertfromImg(orginalImage);
JSONObject jsonObject = new JSONObject();
jsonObject.put("str", content);
System.out.println(jsonObject);
}
public static void resizeImage(String srcImgPath, String distImgPath,
int width, int height) throws IOException {
File srcFile = new File(srcImgPath);
Image srcImg = ImageIO.read(srcFile);
BufferedImage buffImg = null;
buffImg = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
buffImg.getGraphics().drawImage(
srcImg.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0,
0, null);
ImageIO.write(buffImg, "JPG", new File(distImgPath));
}*/
/**
* the BufferedImage to String
*
* @param orginalImage
* @return
* @throws IOException
*/
private String createBody(BufferedImage orginalImage) throws IOException {
StringBuffer sb = new StringBuffer();
Graphics2D graphics = orginalImage.createGraphics();
graphics.drawImage(orginalImage, 0, 0, null);
int height = orginalImage.getHeight();
int width = orginalImage.getWidth();
// int newWidth = width + 200;
int rgb, red, green, blue, index = 0;
char auxBinaryChar[] = {'0', '0', '0', '0', '0', '0', '0', '0'};
// widthBytes = width / 16 ;
// widthBytes = width % 8 > 0 ? (((int) (width / 8)) + 1) : width / 8;
widthBytes = width % 8 > 0 ? (((int) (width / 8)) + 1) : width / 8;
this.total = widthBytes * height;
for (int h = 0; h < height; h++) {
for (int w = 0; w < width; w++) {
rgb = orginalImage.getRGB(w, h);
red = (rgb >> 16) & 0x000000FF;
green = (rgb >> 8) & 0x000000FF;
blue = (rgb) & 0x000000FF;
char auxChar = '1';
int totalColor = red + green + blue;
if (totalColor > blackLimit) {
auxChar = '0';
}
auxBinaryChar[index] = auxChar;
index++;
if (index == 8 || w == (width - 1)) {
sb.append(fourByteBinary(new String(auxBinaryChar)));
auxBinaryChar = new char[]{'0', '0', '0', '0', '0', '0', '0', '0'};
index = 0;
}
}
sb.append("\n");
}
return sb.toString();
}
/**
* @param binaryStr
* @return
*/
private String fourByteBinary(String binaryStr) {
// int decimal = Integer.parseInt(binaryStr, 2);
int decimal = Integer.parseInt(binaryStr, 2);
return decimal > 15 ? Integer.toString(decimal, 16).toUpperCase() : "0" + Integer.toString(decimal, 16).toUpperCase();
}
/**
* @param code
* @return
*/
private String encodeHexAscii(String code) {
int maxlinea = widthBytes * 2;
StringBuffer sbCode = new StringBuffer();
StringBuffer sbLinea = new StringBuffer();
String previousLine = null;
int counter = 1;
char aux = code.charAt(0);
boolean firstChar = false;
for (int i = 1; i < code.length(); i++) {
if (firstChar) {
aux = code.charAt(i);
firstChar = false;
continue;
}
if (code.charAt(i) == '\n') {
if (counter >= maxlinea && aux == '0') {
sbLinea.append(",");
} else if (counter >= maxlinea && aux == 'F') {
sbLinea.append("!");
} else if (counter > 20) {
int multi20 = (counter / 20) * 20;
int resto20 = (counter % 20);
sbLinea.append(mapCode.get(multi20));
if (resto20 != 0) {
sbLinea.append(mapCode.get(resto20) + aux);
} else {
sbLinea.append(aux);
}
} else {
sbLinea.append(mapCode.get(counter) + aux);
if (mapCode.get(counter) == null) {
}
}
counter = 1;
firstChar = true;
if (sbLinea.toString().equals(previousLine)) {
sbCode.append(":");
} else {
sbCode.append(sbLinea.toString());
}
previousLine = sbLinea.toString();
sbLinea.setLength(0);
continue;
}
if (aux == code.charAt(i)) {
counter++;
} else {
if (counter > 20) {
int multi20 = (counter / 20) * 20;
int resto20 = (counter % 20);
sbLinea.append(mapCode.get(multi20));
if (resto20 != 0) {
sbLinea.append(mapCode.get(resto20) + aux);
} else {
sbLinea.append(aux);
}
} else {
sbLinea.append(mapCode.get(counter) + aux);
}
counter = 1;
aux = code.charAt(i);
}
}
return sbCode.toString();
}
private String encodeHexAscii(String code,int number) {
int maxlinea = widthBytes * 2;
StringBuffer sbCode = new StringBuffer();
StringBuffer sbLinea = new StringBuffer();
String previousLine = null;
int counter = 1;
char aux = code.charAt(0);
boolean firstChar = false;
for (int i = 1; i < code.length(); i++) {
if (firstChar) {
aux = code.charAt(i);
firstChar = false;
continue;
}
if (code.charAt(i) == '\n') {
if (counter >= maxlinea && aux == '0') {
sbLinea.append(",");
} else if (counter >= maxlinea && aux == 'F') {
sbLinea.append("!");
} else if (counter > number) {
int multi20 = (counter / number) * number;
int resto20 = (counter % number);
sbLinea.append(mapCode.get(multi20));
if (resto20 != 0) {
sbLinea.append(mapCode.get(resto20) + aux);
} else {
sbLinea.append(aux);
}
} else {
sbLinea.append(mapCode.get(counter) + aux);
if (mapCode.get(counter) == null) {
}
}
counter = 1;
firstChar = true;
if (sbLinea.toString().equals(previousLine)) {
sbCode.append(":");
} else {
sbCode.append(sbLinea.toString());
}
previousLine = sbLinea.toString();
sbLinea.setLength(0);
continue;
}
if (aux == code.charAt(i)) {
counter++;
} else {
if (counter > number) {
int multi20 = (counter / number) * number;
int resto20 = (counter % number);
sbLinea.append(mapCode.get(multi20));
if (resto20 != 0) {
sbLinea.append(mapCode.get(resto20) + aux);
} else {
sbLinea.append(aux);
}
} else {
sbLinea.append(mapCode.get(counter) + aux);
}
counter = 1;
aux = code.charAt(i);
}
}
return sbCode.toString();
}
注意這裏再重複下打印出來的效果不一樣；導致的原因有可能:
1 : 斑馬打印機型號問題
2 : 斑馬打印機的參數設置問題
3 : 圖片自身的類型和圖片的高度寬度等參數信息的設置