如何检查打印机是否通过Java连接到您的PC？ [英] How to check Printer is connected or not to your PC by Java?

问题描述

我能够获得之前在我的PC上安装的打印机的名称。但现在它没有物理连接到我的电脑。在使用Java转移到Print（）之前，我该如何检查它。

I am able to get the name of printer which I had installed previously on my PC.But now its not physically connected to my pc. How should I check it first before moving to Print() in Java.

推荐答案

您可以使用 PrinterState 属性，如果您的打印机支持。

You can use PrinterState attribute if it is supported by your printer.

这样的事情：

PrintServiceAttributeSet printServiceAttributes = selectedService.getAttributes();
PrinterState printerState = (PrinterState) printServiceAttributes.get(PrinterState.class);
       if (printerState != null){
          System.out.println(printerName + " is online");
       } 
       else {
          System.out.println(printerName + " is offline");
       }

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