首先要把环境搭建好,也就是jdk还有tomcat,要是不需要再web上使用就不需要装了! 还有就是配置,也就是默认的comm.jar ,javax.comm.properties , win32com.dll这几个文件要放对地方 comm.jar放到C:\Program Files (x86)\Java\jdk1.7.0_01\jre\lib\ext 同时也放到jre相同目录下 javax.comm.properties放到 C:\Program Files (x86)\Java\jdk1.7.0_01\jre\lib 也放到jre下 win32com.dll放到C:\Program Files (x86)\Java\jdk1.7.0_01\jre\bin也放到jre下 同时 win32com.dll也放到c:windows下的System32下 也把comm.jar配置到classpath下 这个弄好了就是编程序了 package com.serial; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.Enumeration; import java.util.TooManyListenersException; import javax.comm.CommPortIdentifier; import javax.comm.PortInUseException; import javax.comm.SerialPort; import javax.comm.SerialPortEvent; import javax.comm.SerialPortEventListener; /** * @项目名称 :illegalsms * @文件名称 :SerialPort.java * @所在包 :org.serial * @功能描述 : 串口类 * @创建日期 :2012-9-13 * @修改记录 : */ public class DSerialPort implements Runnable, SerialPortEventListener { private String appName = "串口通讯测试"; private int timeout = 2000;// open 端口时的等待时间 private int threadTime = 0; private CommPortIdentifier commPort; private SerialPort serialPort; private InputStream inputStream; private OutputStream outputStream; /** * @方法名称 :listPort * @功能描述 :列出所有可用的串口 * @返回值类型 :void */ @SuppressWarnings("rawtypes") public void listPort() { CommPortIdentifier cpid; Enumeration en = CommPortIdentifier.getPortIdentifiers(); System.out.println("now to list all Port of this PC:" + en); while (en.hasMoreElements()) { cpid = (CommPortIdentifier) en.nextElement(); if (cpid.getPortType() == CommPortIdentifier.PORT_SERIAL) { System.out.println(cpid.getName() + ", " + cpid.getCurrentOwner()); } } } /** * @方法名称 :selectPort * @功能描述 :选择一个端口,比如:COM1 * @返回值类型 :void * @param portName */ @SuppressWarnings("rawtypes") public void selectPort(String portName) { this.commPort = null; CommPortIdentifier cpid; Enumeration en = CommPortIdentifier.getPortIdentifiers(); while (en.hasMoreElements()) { cpid = (CommPortIdentifier) en.nextElement(); if (cpid.getPortType() == CommPortIdentifier.PORT_SERIAL && cpid.getName().equals(portName)) { this.commPort = cpid; break; } } openPort(); } /** * @方法名称 :openPort * @功能描述 :打开SerialPort * @返回值类型 :void */ private void openPort() { if (commPort == null) log(String.format("无法找到名字为'%1$s'的串口!", commPort.getName())); else { log("端口选择成功,当前端口:" + commPort.getName() + ",现在实例化 SerialPort:"); try { serialPort = (SerialPort) commPort.open(appName, timeout); log("实例 SerialPort 成功!"); } catch (PortInUseException e) { throw new RuntimeException(String.format("端口'%1$s'正在使用中!", commPort.getName())); } } } /** * @方法名称 :checkPort * @功能描述 :检查端口是否正确连接 * @返回值类型 :void */ private void checkPort() { if (commPort == null) throw new RuntimeException("没有选择端口,请使用 " + "selectPort(String portName) 方法选择端口"); if (serialPort == null) { throw new RuntimeException("SerialPort 对象无效!"); } } /** * @方法名称 :write * @功能描述 :向端口发送数据,请在调用此方法前 先选择端口,并确定SerialPort正常打开! * @返回值类型 :void * @param message */ public void write(String message) { checkPort(); try { outputStream = new BufferedOutputStream( serialPort.getOutputStream()); } catch (IOException e) { throw new RuntimeException("获取端口的OutputStream出错:" + e.getMessage()); } try { outputStream.write(message.getBytes()); log("信息发送成功!"); } catch (IOException e) { throw new RuntimeException("向端口发送信息时出错:" + e.getMessage()); } finally { try { outputStream.close(); } catch (Exception e) { } } } /** * @方法名称 :startRead * @功能描述 :开始监听从端口中接收的数据 * @返回值类型 :void * @param time * 监听程序的存活时间,单位为秒,0 则是一直监听 */ public void startRead(int time) { checkPort(); try { inputStream = new BufferedInputStream(serialPort.getInputStream()); } catch (IOException e) { throw new RuntimeException("获取端口的InputStream出错:" + e.getMessage()); } try { serialPort.addEventListener(this); } catch (TooManyListenersException e) { throw new RuntimeException(e.getMessage()); } serialPort.notifyOnDataAvailable(true); log(String.format("开始监听来自'%1$s'的数据--------------", commPort.getName())); if (time > 0) { this.threadTime = time * 10; Thread t = new Thread(this); t.start(); log(String.format("监听程序将在%1$d秒后关闭。。。。", threadTime)); } } /** * @方法名称 :close * @功能描述 :关闭 SerialPort * @返回值类型 :void */ public void close() { serialPort.close(); serialPort = null; commPort = null; } public void log(String msg) { System.out.println(appName + " --> " + msg); } /** * 数据接收的监听处理函数 */ @Override public void serialEvent(SerialPortEvent arg0) { switch (arg0.getEventType()) { case SerialPortEvent.BI:/* Break interrupt,通讯中断 */ case SerialPortEvent.OE:/* Overrun error,溢位错误 */ case SerialPortEvent.FE:/* Framing error,传帧错误 */ case SerialPortEvent.PE:/* Parity error,校验错误 */ case SerialPortEvent.CD:/* Carrier detect,载波检测 */ case SerialPortEvent.CTS:/* Clear to send,清除发送 */ case SerialPortEvent.DSR:/* Data set ready,数据设备就绪 */ case SerialPortEvent.RI:/* Ring indicator,响铃指示 */ case SerialPortEvent.OUTPUT_BUFFER_EMPTY:/* * Output buffer is * empty,输出缓冲区清空 */ break; case SerialPortEvent.DATA_AVAILABLE:/* * Data available at the serial * port,端口有可用数据。读到缓冲数组,输出到终端 */ byte[] readBuffer = new byte[1024]; String readStr = ""; String s2 = ""; try { while (inputStream.available() > 0) { inputStream.read(readBuffer); readStr += new String(readBuffer).trim(); } s2 = new String(readBuffer).trim(); log("接收到端口返回数据(长度为" + readStr.length() + "):" + readStr); log(s2); } catch (IOException e) { } } } @Override public void run() { try { Thread.sleep(threadTime); serialPort.close(); log(String.format("端口''监听关闭了!", commPort.getName())); } catch (Exception e) { e.printStackTrace(); } } } 还有就是 package com.serial; public class TestSerial { public static final String PORT_NAME = "COM1"; public static void main(String[] args) { DSerialPort sp = new DSerialPort(); sp.listPort(); sp.selectPort(PORT_NAME); sp.write("O(00,20,0)E"); sp.startRead(5); } } 要是在web上使用的话 就要建一web service工程 建议用eclipse j2ee版的,然后建一个web项目 然后创建相同的类放里面,然后再创建一个servlet package com.serial.servlet; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.serial.DSerialPort; /** * Servlet implementation class RunServlet */ public class RunServlet extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public RunServlet() { super(); } /** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse * response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); // String code = "O(00,20,1)E"; String address = request.getParameter("address"); // 地址 String state = request.getParameter("state"); // 状态 String bofile = request.getParameter("file"); // 视频地址 if (address != null && state != null) { runSerial(address, state, bofile); } else { address = "00"; state = "0"; runSerial(address, state, bofile); } System.out.println("bofile:" + bofile); } // 运行串口 public void runSerial(String address, String state, String bofile) { if (address != null && state != null) { String PORT_NAME = "COM1"; String code = "O(00," + address + "," + state + ")E"; DSerialPort sp = new DSerialPort(); sp.listPort(); sp.selectPort(PORT_NAME); sp.write(code); /* if (bofile != null) { */ if (state.equals("1")) { play(bofile); } /* } */ sp.startRead(1); } } // 播放视频 public void play(String path) { System.out.println("path:" + path); // String // potplayer="D:/The entertainment software/PotPlayer/PotPlayerMini64.exe"; String mediaPath = "C:/MPlayer_Windows/mplayer/MPlayer.exe"; // 文件路径 // 调用mplayer命令行 String cmd = " -vo directx identify wid String.valueOf(false) -colorkey 0x030303 -slave -osdlevel String.valueOf(1)" + " -fullscreen"; try { Process rn = Runtime.getRuntime().exec( mediaPath + " " + path + " " + cmd); // 在单独的进程中执行指定命令和变量 /* * Process rn = Runtime.getRuntime().exec( potplayer + " " + path); * // 在单独的进程中执行指定命令和变量 */ System.out.println("视频开始播放"); } catch (IOException e1) { e1.printStackTrace(); return; } } } 我这个是再加了一个播放视频的 说的很简单,要是有不懂的,我会的,可以来和我探讨哦,QQ在左上角
Java利用串口编程技术操作继电器,布布扣,bubuko.com
原文地址:http://blog.csdn.net/shipeng22022/article/details/27171551