热敏打印机Bangla Font Print不使用Java

Question

我是热敏打印机的初学者，打印结果是：我试图在热敏打印机中打印Bangla： 我也尝试过其他字符集， 怎么解决这个？提前谢谢。

我的代码在这里： Main.java

private void print(){

   PrintDefault pd=new PrintDefault();
    String Str2 = null;
    String text = null;
    text = "আপনি কি ডাটা সংরক্ষন করতে চান";
    pd.printString(Str2+"\n");
      ByteArrayOutputStream bos=new ByteArrayOutputStream();
    bos.reset();
    bos.write(29);
    bos.write((int)'V');
    bos.write(1);

    byte[] cutPaper=bos.toByteArray();

    pd.printBytes(cutPaper);

}

PrintDefault.java

public void printString(String text) {


      DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;

    PrintService service = PrintServiceLookup.lookupDefaultPrintService();

    DocPrintJob job = service.createPrintJob();

    try {

        byte[] bytes;
        // important for umlaut chars
        bytes = text.getBytes(StandardCharsets.UTF_8);
       Doc doc = new SimpleDoc(bytes, flavor, null);
        job.print(doc, null);

    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

public void printBytes(byte[] bytes) {
    DocFlavor flavor = DocFlavor.BYTE_ARRAY.AUTOSENSE;
    PrintService service = PrintServiceLookup.lookupDefaultPrintService();
    DocPrintJob job = service.createPrintJob();

    try {

        Doc doc = new SimpleDoc(bytes, flavor, null);
        job.print(doc, null);

    } catch (Exception e) {
        e.printStackTrace();
    }
}