在windows平台下，使用java与usb通信

javax.usb.UsbPlatformException: Unable to load UsbServices class 'org.usb4java.javax.Services'
at javax.usb.UsbHostManager.initialize(UsbHostManager.java:38)
at javax.usb.UsbHostManager.getUsbServices(UsbHostManager.java:24)
at com.accu.testJUsb.manage.UsbConn.main(UsbConn.java:70)
device = findMissileLauncher(UsbHostManager.getUsbServices()
.getRootUsbHub());