发现可用的打印服务

要发现所有可用的打印服务，我们可以使用 PrintServiceLookup 类。我们来看看如何：

import javax.print.PrintService;
import javax.print.PrintServiceLookup;

public class DiscoveringAvailablePrintServices {

    public static void main(String[] args) {
        discoverPrintServices();
    }

    public static void discoverPrintServices() {
        PrintService[] allPrintServices = PrintServiceLookup.lookupPrintServices(null, null);
        
        for (Printservice printService : allPrintServices) {
            System.out.println("Print service name: " + printService.getName());
        }
    }

}

该程序在 Windows 环境中执行时将打印如下内容：

Print service name: Fax
Print service name: Microsoft Print to PDF
Print service name: Microsoft XPS Document Viewer