打印机介质托盘的名称

问题描述

| 我目前使用以下代码片段检索一些有关可能的介质托盘的打印机信息：

 Media med[] = (Media[])printService.getSupportedAttributeValues(Media.class,null,null);
 if( med != null ) {    
     for (int k=0; k<med.length; k++) {
          sb.append(\"Name : \" + med[k].getClass() + \" - Value : \" + med[k].getValue() +
                \" - Name : \" + med[k].getName()+\"\\n\" );
     }
 }

可悲的是，这只会返回一些纸盘编号，我发现它们相对没有用：

Name : class javax.print.attribute.standard.MediaSizeName - Value : 40 - Name : media
Name : class javax.print.attribute.standard.MediaSizeName - Value : 41 - Name : media
Name : class javax.print.attribute.standard.MediaSizeName - Value : 42 - Name : media
... more ...
Name : class sun.print.Win32MediaTray - Value : 5 - Name : media
Name : class sun.print.Win32MediaTray - Value : 25 - Name : media
Name : class sun.print.Win32MediaTray - Value : 26 - Name : media
Name : class sun.print.Win32MediaTray - Value : 27 - Name : media

如何检索有用的名称？     

解决方法

这将为您提供所有打印机属性，包括纸盘名称

String printName = \"HP Officejet Pro 8500 A910 (Network)\";
AttributeSet aset = new HashAttributeSet();
aset.add(new PrinterName(printName,null));
PrintService[] services = PrintServiceLookup.lookupPrintServices(null,aset);
for (int i = 0; i < services.length; i++) {
  PrintService service = services[i];
  System.out.println(service);
  DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PAGEABLE;
  Object o = service.getSupportedAttributeValues(Media.class,flavor,null);
  if (o != null && o.getClass().isArray()) {
    for (Media media : (Media[]) o) {
      System.out.println(media + \" ID: \" + media.getValue() + \"\\t\" + media.getClass().getName());
    }
  }
}

    ,此代码检索打印机名称，介质托盘名称（按大小和ID）：

public static void printByName(String printName) {
//Inicio Codigo PrintByName
    try{
        AttributeSet aset = new HashAttributeSet();
        aset.add(new PrinterName(printName,null));
    PrintService[] services = PrintServiceLookup.lookupPrintServices(null,aset);
    MediaSizeName mn=null;
    MediaSize mz=null;
    Destination dd=null;
    for (int i = 0; i < services.length; i++) {
        PrintService service = services[i];
        System.out.println(service);
        DocFlavor flavor = DocFlavor.SERVICE_FORMATTED.PAGEABLE;
        Class category = Media.class;
        Object o = service.getSupportedAttributeValues(category,null);
        if (o == null) { // Attribute is not supported
            } 
        else if (o.getClass().isArray()) {
            // Attribute values are a set of values
            Media[] media = (Media[]) o;
            for (int j = 0; j < media.length; j++) {
                //System.out.println(\"ATributo: \" + media[j].getValue() );
                if(media[j] instanceof MediaSizeName) {
                mn=(MediaSizeName)media[j].clone();
                //mz=getMediaSizeForName(mn);
                mz=MediaSize.getMediaSizeForName(mn);

                //System.out.println((media[j].toString()));
                System.out.println(\"\\t Bandeja: \\t\\t\"+ mn + \" ID: \" + mn.getValue() );
                }
                }
            }
        }
    //System.exit(0);
    } catch(Exception e){
    System.out.println(\"Exception is \" + e);
            }    
}