下载java API及lib库地址：http://usb4java.org/index.html
1、导入所需要的库：
2、添加配置文件：文件名：javax.usb.properties；内容：javax.usb.services = org.usb4java.javax.Services
目录结构如下：
3、具体代码实现如下：
1 package com.test.usb;
2
3 import java.util.List;
4
5 import javax.usb.UsbConfiguration;
6 import javax.usb.UsbDevice;
7 import javax.usb.UsbDeviceDescriptor;
8 import javax.usb.UsbEndpoint;
9 import javax.usb.UsbHostManager;
10 import javax.usb.UsbHub;
11 import javax.usb.UsbInterface;
12 import javax.usb.UsbPipe;
13
14 public class UsbUtil {
15 private static short idVendor = (short)0x8888;
16 private static short idProduct = (short)0x0006;
17
18 public static void main(String[] args) {
19 try {
20 UsbPipe sendUsbPipe = new UsbUtil().useUsb();
21
22 if (sendUsbPipe != null) {
23 byte[] buff = new byte[64];
24 for (int i = 0; i < 9; i++) {
25 buff[i] = (byte)i;
26 sendMassge(sendUsbPipe, buff);
27 }
28 }
29
30 } catch (Exception e) {
31 e.printStackTrace();
32 }
33 }
34
35 public UsbPipe useUsb() throws Exception{
36 UsbInterface iface = linkDevice();
37 if (iface == null) {
38 return null;
39 }
40 UsbEndpoint receivedUsbEndpoint,sendUsbEndpoint;
41
42 sendUsbEndpoint = (UsbEndpoint)iface.getUsbEndpoints().get(0);
43 if (!sendUsbEndpoint.getUsbEndpointDescriptor().toString().contains("OUT")) {
44 receivedUsbEndpoint = sendUsbEndpoint;
45 sendUsbEndpoint = (UsbEndpoint)iface.getUsbEndpoints().get(1);
46 } else {
47 receivedUsbEndpoint = (UsbEndpoint)iface.getUsbEndpoints().get(1);
48 }
49
50 //发送：
51 UsbPipe sendUsbPipe = sendUsbEndpoint.getUsbPipe();
52 sendUsbPipe.open();
53
54 //接收
55 final UsbPipe receivedUsbPipe = receivedUsbEndpoint.getUsbPipe();
56 receivedUsbPipe.open();
57
58 new Thread(new Runnable() {
59 public void run() {
60 try {
61 receivedMassge(receivedUsbPipe);
62 } catch (Exception e) {
63 e.printStackTrace();
64 }
65 }
66 }).start();
67 return sendUsbPipe;
68 }
69
70 public UsbInterface linkDevice() throws Exception{
71
72 UsbDevice device = null;
73 if (device == null) {
74 device = findDevice(UsbHostManager.getUsbServices()
75 .getRootUsbHub());
76 }
77 if (device == null) {
78 System.out.println("设备未找到！");
79 return null;
80 }
81 UsbConfiguration configuration = device.getActiveUsbConfiguration();
82 UsbInterface iface = null;
83 if (configuration.getUsbInterfaces().size() > 0) {
84 iface = (UsbInterface)configuration.getUsbInterfaces().get(0);
85 } else {
86 return null;
87 }
88 iface.claim();
89 return iface;
90 }
91
92 public void receivedMassge(UsbPipe usbPipe) throws Exception{
93 byte[] b = new byte[64];
94 int length = 0;
95 while (true) {
96 length = usbPipe.syncSubmit(b);//阻塞
97 System.out.println("接收长度：" + length);
98 for (int i = 0; i < length; i++) {
99 System.out.print(Byte.toUnsignedInt(b[i])+" ");
100 }
101 }
102 }
103
104 public static void sendMassge(UsbPipe usbPipe,byte[] buff) throws Exception{
105 usbPipe.syncSubmit(buff);//阻塞
106 //usbPipe.asyncSubmit(buff);//非阻塞
107 }
108
109 public UsbDevice findDevice(UsbHub hub)
110 {
111 UsbDevice device = null;
112 List list = (List) hub.getAttachedUsbDevices();
113 for (int i = 0;i<list.size();i++)
114 {
115 device = (UsbDevice)list.get(i);
116 UsbDeviceDescriptor desc = device.getUsbDeviceDescriptor();
117 if (desc.idVendor() == idVendor && desc.idProduct() == idProduct) {return device;}
118 if (device.isUsbHub())
119 {
120 device = findDevice((UsbHub) device);
121 if (device != null) return device;
122 }
123 }
124 return null;
125 }
126 }
注意点：发送和接收数据长度要与设备匹配