package com.yang.serialport.manage;

import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.NoSuchPortException;
import gnu.io.PortInUseException;
import gnu.io.SerialPort;
import gnu.io.SerialPortEventListener;
import gnu.io.UnsupportedCommOperationException;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.TooManyListenersException;

import com.yang.serialport.exception.NoSuchPort;
import com.yang.serialport.exception.NotASerialPort;
import com.yang.serialport.exception.PortInUse;
import com.yang.serialport.exception.ReadDataFromSerialPortFailure;
import com.yang.serialport.exception.SendDataToSerialPortFailure;
import com.yang.serialport.exception.SerialPortInputStreamCloseFailure;
import com.yang.serialport.exception.SerialPortOutputStreamCloseFailure;
import com.yang.serialport.exception.SerialPortParameterFailure;
import com.yang.serialport.exception.TooManyListeners;

/**
 * 串口管理
 * 
 * @author yangle
 */
public class SerialPortManager {

 /**
 * 查找所有可用端口
 * 
 * @return 可用端口名稱列表
 */
 @SuppressWarnings("unchecked")
 public static final ArrayList<String> findPort() {
 // 獲得當(dāng)前所有可用串口
 Enumeration<CommPortIdentifier> portList = CommPortIdentifier
  .getPortIdentifiers();
 ArrayList<String> portNameList = new ArrayList<String>();
 // 將可用串口名添加到List并返回該List
 while (portList.hasMoreElements()) {
  String portName = portList.nextElement().getName();
  portNameList.add(portName);
 }
 return portNameList;
 }

 /**
 * 打開串口
 * 
 * @param portName
 *  端口名稱
 * @param baudrate
 *  波特率
 * @return 串口對象
 * @throws SerialPortParameterFailure
 *  設(shè)置串口參數(shù)失敗
 * @throws NotASerialPort
 *  端口指向設(shè)備不是串口類型
 * @throws NoSuchPort
 *  沒有該端口對應(yīng)的串口設(shè)備
 * @throws PortInUse
 *  端口已被占用
 */
 public static final SerialPort openPort(String portName, int baudrate)
  throws SerialPortParameterFailure, NotASerialPort, NoSuchPort,
  PortInUse {
 try {
  // 通過端口名識別端口
  CommPortIdentifier portIdentifier = CommPortIdentifier
   .getPortIdentifier(portName);
  // 打開端口，設(shè)置端口名與timeout（打開操作的超時時間）
  CommPort commPort = portIdentifier.open(portName, 2000);
  // 判斷是不是串口
  if (commPort instanceof SerialPort) {
  SerialPort serialPort = (SerialPort) commPort;
  try {
   // 設(shè)置串口的波特率等參數(shù)
   serialPort.setSerialPortParams(baudrate,
    SerialPort.DATABITS_8, SerialPort.STOPBITS_1,
    SerialPort.PARITY_NONE);
  } catch (UnsupportedCommOperationException e) {
   throw new SerialPortParameterFailure();
  }
  return serialPort;
  } else {
  // 不是串口
  throw new NotASerialPort();
  }
 } catch (NoSuchPortException e1) {
  throw new NoSuchPort();
 } catch (PortInUseException e2) {
  throw new PortInUse();
 }
 }

 /**
 * 關(guān)閉串口
 * 
 * @param serialport
 *  待關(guān)閉的串口對象
 */
 public static void closePort(SerialPort serialPort) {
 if (serialPort != null) {
  serialPort.close();
  serialPort = null;
 }
 }

 /**
 * 向串口發(fā)送數(shù)據(jù)
 * 
 * @param serialPort
 *  串口對象
 * @param order
 *  待發(fā)送數(shù)據(jù)
 * @throws SendDataToSerialPortFailure
 *  向串口發(fā)送數(shù)據(jù)失敗
 * @throws SerialPortOutputStreamCloseFailure
 *  關(guān)閉串口對象的輸出流出錯
 */
 public static void sendToPort(SerialPort serialPort, byte[] order)
  throws SendDataToSerialPortFailure,
  SerialPortOutputStreamCloseFailure {
 OutputStream out = null;
 try {
  out = serialPort.getOutputStream();
  out.write(order);
  out.flush();
 } catch (IOException e) {
  throw new SendDataToSerialPortFailure();
 } finally {
  try {
  if (out != null) {
   out.close();
   out = null;
  }
  } catch (IOException e) {
  throw new SerialPortOutputStreamCloseFailure();
  }
 }
 }

 /**
 * 從串口讀取數(shù)據(jù)
 * 
 * @param serialPort
 *  當(dāng)前已建立連接的SerialPort對象
 * @return 讀取到的數(shù)據(jù)
 * @throws ReadDataFromSerialPortFailure
 *  從串口讀取數(shù)據(jù)時出錯
 * @throws SerialPortInputStreamCloseFailure
 *  關(guān)閉串口對象輸入流出錯
 */
 public static byte[] readFromPort(SerialPort serialPort)
  throws ReadDataFromSerialPortFailure,
  SerialPortInputStreamCloseFailure {
 InputStream in = null;
 byte[] bytes = null;
 try {
  in = serialPort.getInputStream();
  // 獲取buffer里的數(shù)據(jù)長度
  int bufflenth = in.available();
  while (bufflenth != 0) {
  // 初始化byte數(shù)組為buffer中數(shù)據(jù)的長度
  bytes = new byte[bufflenth];
  in.read(bytes);
  bufflenth = in.available();
  }
 } catch (IOException e) {
  throw new ReadDataFromSerialPortFailure();
 } finally {
  try {
  if (in != null) {
   in.close();
   in = null;
  }
  } catch (IOException e) {
  throw new SerialPortInputStreamCloseFailure();
  }
 }
 return bytes;
 }

 /**
 * 添加監(jiān)聽器
 * 
 * @param port
 *  串口對象
 * @param listener
 *  串口監(jiān)聽器
 * @throws TooManyListeners
 *  監(jiān)聽類對象過多
 */
 public static void addListener(SerialPort port,
  SerialPortEventListener listener) throws TooManyListeners {
 try {
  // 給串口添加監(jiān)聽器
  port.addEventListener(listener);
  // 設(shè)置當(dāng)有數(shù)據(jù)到達(dá)時喚醒監(jiān)聽接收線程
  port.notifyOnDataAvailable(true);
  // 設(shè)置當(dāng)通信中斷時喚醒中斷線程
  port.notifyOnBreakInterrupt(true);
 } catch (TooManyListenersException e) {
  throw new TooManyListeners();
 }
 }
}

/*
 * MainFrame.java
 *
 * Created on 2016.8.19
 */

package com.yang.serialport.ui;

import gnu.io.SerialPort;
import gnu.io.SerialPortEvent;
import gnu.io.SerialPortEventListener;

import java.awt.Color;
import java.awt.GraphicsEnvironment;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import com.yang.serialport.exception.NoSuchPort;
import com.yang.serialport.exception.NotASerialPort;
import com.yang.serialport.exception.PortInUse;
import com.yang.serialport.exception.SendDataToSerialPortFailure;
import com.yang.serialport.exception.SerialPortOutputStreamCloseFailure;
import com.yang.serialport.exception.SerialPortParameterFailure;
import com.yang.serialport.exception.TooManyListeners;
import com.yang.serialport.manage.SerialPortManager;
import com.yang.serialport.utils.ByteUtils;
import com.yang.serialport.utils.ShowUtils;

/**
 * 主界面
 * 
 * @author yangle
 */
public class MainFrame extends JFrame {

 /**
 * 程序界面寬度
 */
 public static final int WIDTH = 500;

 /**
 * 程序界面高度
 */
 public static final int HEIGHT = 360;

 private JTextArea dataView = new JTextArea();
 private JScrollPane scrollDataView = new JScrollPane(dataView);

 // 串口設(shè)置面板
 private JPanel serialPortPanel = new JPanel();
 private JLabel serialPortLabel = new JLabel("串口");
 private JLabel baudrateLabel = new JLabel("波特率");
 private JComboBox commChoice = new JComboBox();
 private JComboBox baudrateChoice = new JComboBox();

 // 操作面板
 private JPanel operatePanel = new JPanel();
 private JTextField dataInput = new JTextField();
 private JButton serialPortOperate = new JButton("打開串口");
 private JButton sendData = new JButton("發(fā)送數(shù)據(jù)");

 private List<String> commList = null;
 private SerialPort serialport;

 public MainFrame() {
 initView();
 initComponents();
 actionListener();
 initData();
 }

 private void initView() {
 // 關(guān)閉程序
 setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
 // 禁止窗口最大化
 setResizable(false);

 // 設(shè)置程序窗口居中顯示
 Point p = GraphicsEnvironment.getLocalGraphicsEnvironment()
  .getCenterPoint();
 setBounds(p.x - WIDTH / 2, p.y - HEIGHT / 2, WIDTH, HEIGHT);
 this.setLayout(null);

 setTitle("串口通訊");
 }

 private void initComponents() {
 // 數(shù)據(jù)顯示
 dataView.setFocusable(false);
 scrollDataView.setBounds(10, 10, 475, 200);
 add(scrollDataView);

 // 串口設(shè)置
 serialPortPanel.setBorder(BorderFactory.createTitledBorder("串口設(shè)置"));
 serialPortPanel.setBounds(10, 220, 170, 100);
 serialPortPanel.setLayout(null);
 add(serialPortPanel);

 serialPortLabel.setForeground(Color.gray);
 serialPortLabel.setBounds(10, 25, 40, 20);
 serialPortPanel.add(serialPortLabel);

 commChoice.setFocusable(false);
 commChoice.setBounds(60, 25, 100, 20);
 serialPortPanel.add(commChoice);

 baudrateLabel.setForeground(Color.gray);
 baudrateLabel.setBounds(10, 60, 40, 20);
 serialPortPanel.add(baudrateLabel);

 baudrateChoice.setFocusable(false);
 baudrateChoice.setBounds(60, 60, 100, 20);
 serialPortPanel.add(baudrateChoice);

 // 操作
 operatePanel.setBorder(BorderFactory.createTitledBorder("操作"));
 operatePanel.setBounds(200, 220, 285, 100);
 operatePanel.setLayout(null);
 add(operatePanel);

 dataInput.setBounds(25, 25, 235, 20);
 operatePanel.add(dataInput);

 serialPortOperate.setFocusable(false);
 serialPortOperate.setBounds(45, 60, 90, 20);
 operatePanel.add(serialPortOperate);

 sendData.setFocusable(false);
 sendData.setBounds(155, 60, 90, 20);
 operatePanel.add(sendData);
 }

 @SuppressWarnings("unchecked")
 private void initData() {
 commList = SerialPortManager.findPort();
 // 檢查是否有可用串口，有則加入選項(xiàng)中
 if (commList == null || commList.size() < 1) {
  ShowUtils.warningMessage("沒有搜索到有效串口！");
 } else {
  for (String s : commList) {
  commChoice.addItem(s);
  }
 }

 baudrateChoice.addItem("9600");
 baudrateChoice.addItem("19200");
 baudrateChoice.addItem("38400");
 baudrateChoice.addItem("57600");
 baudrateChoice.addItem("115200");
 }

 private void actionListener() {
 serialPortOperate.addActionListener(new ActionListener() {

  @Override
  public void actionPerformed(ActionEvent e) {
  if ("打開串口".equals(serialPortOperate.getText())
   && serialport == null) {
   openSerialPort(e);
  } else {
   closeSerialPort(e);
  }
  }
 });

 sendData.addActionListener(new ActionListener() {

  @Override
  public void actionPerformed(ActionEvent e) {
  sendData(e);
  }
 });
 }

 /**
 * 打開串口
 * 
 * @param evt
 *  點(diǎn)擊事件
 */
 private void openSerialPort(java.awt.event.ActionEvent evt) {
 // 獲取串口名稱
 String commName = (String) commChoice.getSelectedItem();
 // 獲取波特率
 int baudrate = 9600;
 String bps = (String) baudrateChoice.getSelectedItem();
 baudrate = Integer.parseInt(bps);

 // 檢查串口名稱是否獲取正確
 if (commName == null || commName.equals("")) {
  ShowUtils.warningMessage("沒有搜索到有效串口！");
 } else {
  try {
  serialport = SerialPortManager.openPort(commName, baudrate);
  if (serialport != null) {
   dataView.setText("串口已打開" + "\r\n");
   serialPortOperate.setText("關(guān)閉串口");
  }
  } catch (SerialPortParameterFailure e) {
  e.printStackTrace();
  } catch (NotASerialPort e) {
  e.printStackTrace();
  } catch (NoSuchPort e) {
  e.printStackTrace();
  } catch (PortInUse e) {
  e.printStackTrace();
  ShowUtils.warningMessage("串口已被占用！");
  }
 }

 try {
  SerialPortManager.addListener(serialport, new SerialListener());
 } catch (TooManyListeners e) {
  e.printStackTrace();
 }
 }

 /**
 * 關(guān)閉串口
 * 
 * @param evt
 *  點(diǎn)擊事件
 */
 private void closeSerialPort(java.awt.event.ActionEvent evt) {
 SerialPortManager.closePort(serialport);
 dataView.setText("串口已關(guān)閉" + "\r\n");
 serialPortOperate.setText("打開串口");
 }

 /**
 * 發(fā)送數(shù)據(jù)
 * 
 * @param evt
 *  點(diǎn)擊事件
 */
 private void sendData(java.awt.event.ActionEvent evt) {
 // 輸入框直接輸入十六進(jìn)制字符，長度必須是偶數(shù)
 String data = dataInput.getText().toString();
 try {
  SerialPortManager.sendToPort(serialport,
   ByteUtils.hexStr2Byte(data));
 } catch (SendDataToSerialPortFailure e) {
  e.printStackTrace();
 } catch (SerialPortOutputStreamCloseFailure e) {
  e.printStackTrace();
 }
 }

 private class SerialListener implements SerialPortEventListener {
 /**
  * 處理監(jiān)控到的串口事件
  */
 public void serialEvent(SerialPortEvent serialPortEvent) {

  switch (serialPortEvent.getEventType()) {

  case SerialPortEvent.BI: // 10 通訊中斷
  ShowUtils.errorMessage("與串口設(shè)備通訊中斷");
  break;

  case SerialPortEvent.OE: // 7 溢位（溢出）錯誤

  case SerialPortEvent.FE: // 9 幀錯誤

  case SerialPortEvent.PE: // 8 奇偶校驗(yàn)錯誤

  case SerialPortEvent.CD: // 6 載波檢測

  case SerialPortEvent.CTS: // 3 清除待發(fā)送數(shù)據(jù)

  case SerialPortEvent.DSR: // 4 待發(fā)送數(shù)據(jù)準(zhǔn)備好了

  case SerialPortEvent.RI: // 5 振鈴指示

  case SerialPortEvent.OUTPUT_BUFFER_EMPTY: // 2 輸出緩沖區(qū)已清空
  break;

  case SerialPortEvent.DATA_AVAILABLE: // 1 串口存在可用數(shù)據(jù)
  byte[] data = null;
  try {
   if (serialport == null) {
   ShowUtils.errorMessage("串口對象為空！監(jiān)聽失?。?);
   } else {
   // 讀取串口數(shù)據(jù)
   data = SerialPortManager.readFromPort(serialport);
   dataView.append(ByteUtils.byteArrayToHexString(data,
    true) + "\r\n");
   }
  } catch (Exception e) {
   ShowUtils.errorMessage(e.toString());
   // 發(fā)生讀取錯誤時顯示錯誤信息后退出系統(tǒng)
   System.exit(0);
  }
  break;
  }
 }
 }

 public static void main(String args[]) {
 java.awt.EventQueue.invokeLater(new Runnable() {
  public void run() {
  new MainFrame().setVisible(true);
  }
 });
 }
}