StupidBTMIDlet.java
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.AlertType;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.List;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.
MIDletStateChangeException;
/**
* @author Jagie
*
* MIDlet
*/
public class StupidBTMIDlet extends
MIDlet implements CommandListener
{
List list;
ServerBox sb;
ClientBox cb;
/*
* (non-Javadoc)
*
* @see javax.microedition.
midlet.MIDlet#startApp()
*/
protected void startApp()
throws MIDletStateChangeException
{
list = new List
("蓝牙入门", List.IMPLICIT);
list.append("Client", null);
list.append("Server", null);
list.setCommandListener(this);
Display.getDisplay(this).setCurrent(list);
}
/**
* debug方法
* @param s 要显示的字串
*/
public void showString(String s)
{
Displayable dp =
Display.getDisplay(this).getCurrent();
Alert al = new Alert(null, s,
null, AlertType.INFO);
al.setTimeout(2000);
Display.getDisplay(this).setCurrent(al, dp);
}
/**
* 显示主菜单
*
*/
public void showMainMenu()
{
Display.getDisplay(this).
setCurrent(list);
}
protected void pauseApp()
{
// TODO Auto-generated method stub
}
public void commandAction
(Command com, Displayable disp)
{
if (com == List.SELECT_COMMAND)
{
List list = (List) disp;
int index = list.getSelectedIndex();
if (index == 1)
{
if (sb == null)
{
sb = new ServerBox(this);
}
sb.setString(null);
Display.getDisplay(this)
.setCurrent(sb);
} else {
//每次都生成新的客户端实例
cb = null;
System.gc();
cb = new ClientBox(this);
Display.getDisplay(this)
.setCurrent(cb);
}
}
}
protected void destroyApp(boolean arg0)
throws MIDletStateChangeException
{
// TODO Auto-generated method stub
}
}
ClientBox.java
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Vector;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Gauge;
import javax.microedition.lcdui.StringItem;
import javax.microedition.lcdui.TextField;
//jsr082 API
import javax.bluetooth.BluetoothStateException;
import javax.bluetooth.DeviceClass;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.DiscoveryListener;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.RemoteDevice;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
/**
* 客户端GUI
* @author Jagie
*
* TODO To change the template for
this generated type comment go to
* Window - Preferences -
Java - Code Style - Code Templates
*/
public class ClientBox extends
Form implements Runnable, CommandListener,
DiscoveryListener
{
//字串输入框
TextField input =
new TextField(null, "", 50, TextField.ANY);
//loger
StringItem result =
new StringItem("结果:", "");
private DiscoveryAgent discoveryAgent;
private UUID[] uuidSet;
//响应服务的UUID
private static final UUID
ECHO_SERVER_UUID = new UUID(
"F0E0D0C0B0A000908070605040302010", false);
//设备集合
Vector devices = new Vector();
//服务集合
Vector records = new Vector();
//服务搜索的事务id集合
int[] transIDs;
StupidBTMIDlet midlet;
public ClientBox(StupidBTMIDlet midlet)
{
super("");
this.midlet=midlet;
this.append(result);
this.addCommand(new Command
("取消",Command.CANCEL,1));
this.setCommandListener(this);
new Thread(this).start();
}
public void commandAction
(Command arg0, Displayable arg1)
{
if(arg0.getCommandType
()==Command.CANCEL){
midlet.showMainMenu();
}else{
//匿名内部Thread，访问远程服务。
Thread fetchThread=new Thread()
{
public void run()
{
for(int i=0;i<records.size();i++)
{
ServiceRecord sr=(ServiceRecord)
records.elementAt(i);
if(accessService(sr))
{
//访问到一个可用的服务即可
break;
}
}
}
};
fetchThread.start();
}
}
private boolean accessService
(ServiceRecord sr)
{
boolean result=false;
try {
String url = sr.getConnectionURL(
ServiceRecord.
NOAUTHENTICATE_NOENCRYPT, false);
StreamConnection
conn = (StreamConnection)
Connector.open(url);
DataOutputStream dos=
conn.openDataOutputStream();
dos.writeUTF(input.getString());
dos.close();
DataInputStream dis=conn.openDataInputStream();
String echo=dis.readUTF();
dis.close();
showInfo("反馈结果是:"+echo);
result=true;
} catch (IOException e)
{
}
return result;
}
public synchronized void run()
{
//发现设备和服务的过程中，
给用户以Gauge
Gauge g=new Gauge(null,false,Gauge.INDEFINITE,
Gauge.CONTINUOUS_RUNNING);
this.append(g);
showInfo("蓝牙初始化...");
boolean isBTReady = false;
try
{
LocalDevice localDevice
= LocalDevice.getLocalDevice();
discoveryAgent
= localDevice.getDiscoveryAgent();
isBTReady = true;
} catch (Exception e)
{
e.printStackTrace();
}
if (!isBTReady)
{
showInfo("蓝牙不可用");
//删除Gauge
this.delete(1);
return;
}
uuidSet = new UUID[2];
//标志我们的响应服务的UUID集合
uuidSet[0] = new UUID(0x1101);
uuidSet[1] = ECHO_SERVER_UUID;
try {
discoveryAgent.startInquiry
(DiscoveryAgent.GIAC, this);
} catch (BluetoothStateException e)
{
}
try {
//阻塞,由inquiryCompleted()回调方法唤醒
wait();
} catch (InterruptedException e1)
{
e1.printStackTrace();
}
showInfo("设备搜索完毕,共找到"
+devices.size()+"个设备,开始搜索服务");
transIDs = new int[devices.size()];
for (int i = 0; i < devices.size(); i++)
{
RemoteDevice rd = (RemoteDevice)
devices.elementAt(i);
try {
//记录每一次服务搜索的事务id
transIDs[i] =
discoveryAgent.searchServices
(null, uuidSet,
rd, this);
} catch (BluetoothStateException e)
{
continue;
}
}
try {
//阻塞,由serviceSearchCompleted()
回调方法在所有设备都搜索完的情况下唤醒
wait();
} catch (InterruptedException e1)
{
e1.printStackTrace();
}
showInfo("服务搜索完毕,
共找到"+records.size()+
"个服务,准备发送请求");
if(records.size()>0){
this.append(input);
this.addCommand(new Command
("发送",Command.OK,0));
}
//删除Gauge
this.delete(1);
}
/**
* debug
* @param s
*/
private void showInfo(String s){
StringBuffer sb=new
StringBuffer(result.getText());
if(sb.length()>0){
sb.append("\n");
}
sb.append(s);
result.setText(sb.toString());
}
/**
* 回调方法
*/
public void deviceDiscovered
(RemoteDevice btDevice, DeviceClass cod)
{
if (devices.indexOf(btDevice) == -1)
{
devices.addElement(btDevice);
}
}
/**
* 回调方法，唤醒初始化线程
*/
public void inquiryCompleted(int discType)
{
synchronized (this)
{
notify();
}
}
/**
* 回调方法
*/
public void servicesDiscovered
(int transID, ServiceRecord[] servRecord)
{
for (int i = 0; i < servRecord.length; i++)
{
records.addElement(servRecord[i]);
}
}
/**
* 回调方法，唤醒初始化线程
*/
public void serviceSearchCompleted
(int transID, int respCode)
{
for (int i = 0; i < transIDs.length; i++)
{
if (transIDs[i] == transID)
{
transIDs[i] = -1;
break;
}
}
//如果所有的设备都已经搜索服务完毕，
则唤醒初始化线程。
boolean finished = true;
for (int i = 0; i < transIDs.length; i++)
{
if (transIDs[i] != -1)
{
finished = false;
break;
}
}
if (finished)
{
synchronized (this)
{
notify();
}
}
}
}
ServerBox.java
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Vector;
import javax.bluetooth.DiscoveryAgent;
import javax.bluetooth.LocalDevice;
import javax.bluetooth.ServiceRecord;
import javax.bluetooth.UUID;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.io.
StreamConnectionNotifier;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
/**
* 服务端GUI
* @author Jagie
*
* TODO To change the template
for this generated type comment go to
* Window - Preferences
- Java - Code Style - Code Templates
*/
public class ServerBox extends
TextBox implements Runnable, CommandListener
{
Command com_pub = new Command
("开启服务", Command.OK, 0);
Command com_cancel = new Command
("终止服务", Command.CANCEL, 0);
Command com_back = new Command
("返回", Command.BACK, 1);
LocalDevice localDevice;
StreamConnectionNotifier notifier;
ServiceRecord record;
boolean isClosed;
ClientProcessor processor;
StupidBTMIDlet midlet;
//响应服务的uuid
private static final UUID
ECHO_SERVER_UUID = new UUID(
"F0E0D0C0B0A000908070605040302010", false);
public ServerBox(StupidBTMIDlet midlet)
{
super(null, "", 500, TextField.ANY);
this.midlet = midlet;
this.addCommand(com_pub);
this.addCommand(com_back);
this.setCommandListener(this);
}
public void run()
{
boolean isBTReady = false;
try {
localDevice =
LocalDevice.getLocalDevice();
if (!localDevice.setDiscoverable
(DiscoveryAgent.GIAC))
{
showInfo("无法设置设备发现模式");
return;
}
// prepare a URL to create a notifier
StringBuffer url =
new StringBuffer("btspp://");
// indicate this is a server
url.append("localhost").append(':');
// add the UUID to identify this service
url.append(ECHO_SERVER_UUID.toString());
// add the name for our service
url.append(";name=Echo Server");
// request all of the
client not to be authorized
// some devices fail on authorize=true
url.append(";authorize=false");
// create notifier now
notifier = (StreamConnectionNotifier)
Connector
.open(url.toString());
record = localDevice.getRecord(notifier);
// remember we've reached this point.
isBTReady = true;
} catch (Exception e) {
e.printStackTrace();
}
// nothing to do if no bluetooth available
if (isBTReady) {
showInfo("初始化成功，等待连接");
this.removeCommand(com_pub);
this.addCommand(com_cancel);
} else {
showInfo("初始化失败,退出");
return;
}
// 生成服务端服务线程对象
processor = new ClientProcessor();
// ok, start accepting connections then
while (!isClosed) {
StreamConnection conn = null;
try {
conn = notifier.acceptAndOpen();
} catch (IOException e) {
// wrong client or interrupted
- continue anyway
continue;
}
processor.addConnection(conn);
}
}
public void publish()
{
isClosed = false;
this.setString(null);
new Thread(this).start();
}
public void cancelService()
{
isClosed = true;
showInfo("服务终止");
this.removeCommand(com_cancel);
this.addCommand(com_pub);
}
/*
* (non-Javadoc)
*
* @see javax.microedition.lcdui.
CommandListener#commandAction
(javax.microedition.lcdui.Command,
* javax.microedition.lcdui.Displayable)
*/
public void commandAction
(Command arg0, Displayable arg1)
{
if (arg0 == com_pub)
{
//发布service
publish();
} else if (arg0 == com_cancel)
{
cancelService();
} else
{
cancelService();
midlet.showMainMenu();
}
}
/**
* 内部类，服务端服务线程。
* @author Jagie
*
* TODO To change the template for
this generated type comment go to
* Window - Preferences
- Java - Code Style - Code Templates
*/
private class ClientProcessor implements Runnable
{
private Thread processorThread;
private Vector queue = new Vector();
private boolean isOk = true;
ClientProcessor() {
processorThread = new Thread(this);
processorThread.start();
}
public void run() {
while (!isClosed) {
synchronized (this) {
if (queue.size() == 0)
{
try {
//阻塞，直到有新客户连接
wait();
}
catch (InterruptedException e)
{
}
}
}
//处理连接队列
StreamConnection conn;
synchronized (this)
{
if (isClosed)
{
return;
}
conn = (StreamConnection)
queue.firstElement();
queue.removeElementAt(0);
processConnection(conn);
}
}
}
/**
* 往连接队列添加新连接，同时唤醒处理线程
* @param conn
*/
void addConnection(StreamConnection conn)
{
synchronized (this)
{
queue.addElement(conn);
notify();
}
}
}
/**
* 从StreamConnection读取输入
* @param conn
* @return
*/
private String readInputString
(StreamConnection conn)
{
String inputString = null;
try {
DataInputStream dis
= conn.openDataInputStream();
inputString = dis.readUTF();
dis.close();
} catch (Exception e)
{
e.printStackTrace();
}
return inputString;
}
/**
* debug
* @param s
*/
private void showInfo(String s)
{
StringBuffer sb =
new StringBuffer(this.getString());
if (sb.length() > 0) {
sb.append("\n");
}
sb.append(s);
this.setString(sb.toString());
}
/**
* 处理客户端连接
* @param conn
*/
private void processConnection
(StreamConnection conn)
{
// 读取输入
String inputString =
readInputString(conn);
//生成响应
String outputString =
inputString.toUpperCase();
//输出响应
sendOutputData(outputString, conn);
try {
conn.close();
} catch (IOException e) {
} // ignore
showInfo("客户端输入:" +
inputString + ",已成功响应!");
}
/**
* 输出响应
* @param outputData
* @param conn
*/
private void sendOutputData
(String outputData, StreamConnection conn)
{
try
{
DataOutputStream dos =
conn.openDataOutputStream();
dos.writeUTF(outputData);
dos.close();
} catch (IOException e) {
}
}
} |
