Java使用开源Rxtx实现串口通讯
本文实例为大家分享了Java使用开源Rxtx实现串口通讯的具体代码，供大家参考，具体内容如下
使用方法：
windows平台：
1、把rxtxParallel.dll、rxtxSerial.dll拷贝到：C:\WINDOWS\system32下。
2、如果是在开发的时候(JDK),需要把RXTXcomm.jar、rxtxParallel.dll、rxtxSerial.dll拷贝到..\jre...\lib\ext下；如：D:\ProgramFiles\Java\jre1.6.0_02\lib\ext
3、而且需要把项目1.右键->2.Preperties(首选项)->3.JavaBuildPath->4.Libraries->5.展开RXTXcomm.jar->6.Nativelibrarylocation:(None)->7.浏览ExternalFolder(选择至该项目的lib文件夹，如：E:/Item/MyItem/WebRoot/WEB-INF/lib).
importgnu.io.*;
importjava.io.*;
importjava.util.*;
importcom.call.dao.*;
publicclassSerialReaderextendsObservableimplementsRunnable,SerialPortEventListener
{
staticCommPortIdentifierportId;
intdelayRead=100;
intnumBytes;//buffer中的实际数据字节数
privatestaticbyte[]readBuffer=newbyte[1024];//4k的buffer空间,缓存串口读入的数据
staticEnumerationportList;
InputStreaminputStream;
OutputStreamoutputStream;
staticSerialPortserialPort;
HashMapserialParams;
ThreadreadThread;//本来是static类型的
//端口是否打开了
booleanisOpen=false;
//端口读入数据事件触发后,等待n毫秒后再读取,以便让数据一次性读完
publicstaticfinalStringPARAMS_DELAY="delayread";//延时等待端口数据准备的时间
publicstaticfinalStringPARAMS_TIMEOUT="timeout";//超时时间
publicstaticfinalStringPARAMS_PORT="portname";//端口名称
publicstaticfinalStringPARAMS_DATABITS="databits";//数据位
publicstaticfinalStringPARAMS_STOPBITS="stopbits";//停止位
publicstaticfinalStringPARAMS_PARITY="parity";//奇偶校验
publicstaticfinalStringPARAMS_RATE="rate";//波特率
publicbooleanisOpen(){
returnisOpen;
}
/**
*初始化端口操作的参数.
*@throwsSerialPortException
*
*@see
*/
publicSerialReader()
{
isOpen=false;
}
publicvoidopen(HashMapparams)
{
serialParams=params;
if(isOpen){
close();
}
try
{
//参数初始化
inttimeout=Integer.parseInt(serialParams.get(PARAMS_TIMEOUT)
.toString());
intrate=Integer.parseInt(serialParams.get(PARAMS_RATE)
.toString());
intdataBits=Integer.parseInt(serialParams.get(PARAMS_DATABITS)
.toString());
intstopBits=Integer.parseInt(serialParams.get(PARAMS_STOPBITS)
.toString());
intparity=Integer.parseInt(serialParams.get(PARAMS_PARITY)
.toString());
delayRead=Integer.parseInt(serialParams.get(PARAMS_DELAY)
.toString());
Stringport=serialParams.get(PARAMS_PORT).toString();
//打开端口
portId=CommPortIdentifier.getPortIdentifier(port);
serialPort=(SerialPort)portId.open("SerialReader",timeout);
inputStream=serialPort.getInputStream();
serialPort.addEventListener(this);
serialPort.notifyOnDataAvailable(true);
serialPort.setSerialPortParams(rate,dataBits,stopBits,parity);
isOpen=true;
}
catch(PortInUseExceptione)
{
//端口"+serialParams.get(PARAMS_PORT).toString()+"已经被占用";
}
catch(TooManyListenersExceptione)
{
//"端口"+serialParams.get(PARAMS_PORT).toString()+"监听者过多";
}
catch(UnsupportedCommOperationExceptione)
{
//"端口操作命令不支持";
}
catch(NoSuchPortExceptione)
{
//"端口"+serialParams.get(PARAMS_PORT).toString()+"不存在";
}
catch(IOExceptione)
{
//"打开端口"+serialParams.get(PARAMS_PORT).toString()+"失败";
}
serialParams.clear();
ThreadreadThread=newThread(this);
readThread.start();
}
publicvoidrun()
{
try
{
Thread.sleep(50);
}
catch(InterruptedExceptione)
{
}
}
publicvoidstart(){
try{
outputStream=serialPort.getOutputStream();
}
catch(IOExceptione){}
try{
readThread=newThread(this);
readThread.start();
}
catch(Exceptione){}
}//start()end
publicvoidrun(Stringmessage){
try{
Thread.sleep(4);
}
catch(InterruptedExceptione){}
try{
if(message!=null&&message.length()!=0)
{
System.out.println("runmessage:"+message);
outputStream.write(message.getBytes());
}
}catch(IOExceptione){}
}
publicvoidclose()
{
if(isOpen)
{
try
{
serialPort.notifyOnDataAvailable(false);
serialPort.removeEventListener();
inputStream.close();
serialPort.close();
isOpen=false;
}catch(IOExceptionex)
{
//"关闭串口失败";
}
}
}
publicvoidserialEvent(SerialPortEventevent)
{
try
{
Thread.sleep(delayRead);
}
catch(InterruptedExceptione)
{
e.printStackTrace();
}
switch(event.getEventType())
{
caseSerialPortEvent.BI://10
caseSerialPortEvent.OE://7
caseSerialPortEvent.FE://9
caseSerialPortEvent.PE://8
caseSerialPortEvent.CD://6
caseSerialPortEvent.CTS://3
caseSerialPortEvent.DSR://4
caseSerialPortEvent.RI://5
caseSerialPortEvent.OUTPUT_BUFFER_EMPTY://2
break;
caseSerialPortEvent.DATA_AVAILABLE://1
try
{
//多次读取,将所有数据读入
while(inputStream.available()>0){
numBytes=inputStream.read(readBuffer);
}
//打印接收到的字节数据的ASCII码
for(inti=0;iparams=newHashMap();
otherDAOodao=newotherDAO();
Stringport=odao.selectNumberById(15);
Stringrate="9600";
StringdataBit=""+SerialPort.DATABITS_8;
StringstopBit=""+SerialPort.STOPBITS_1;
Stringparity=""+SerialPort.PARITY_NONE;
intparityInt=SerialPort.PARITY_NONE;
params.put(SerialReader.PARAMS_PORT,port);//端口名称
params.put(SerialReader.PARAMS_RATE,rate);//波特率
params.put(SerialReader.PARAMS_DATABITS,dataBit);//数据位
params.put(SerialReader.PARAMS_STOPBITS,stopBit);//停止位
params.put(SerialReader.PARAMS_PARITY,parityInt);//无奇偶校验
params.put(SerialReader.PARAMS_TIMEOUT,100);//设备超时时间1秒
params.put(SerialReader.PARAMS_DELAY,100);//端口数据准备时间1秒
try{
open(params);//打开串口
LoginFramecf=newLoginFrame();
addObserver(cf);
if(message!=null&&message.length()!=0)
{
Stringstr="";
for(inti=0;i<10;i++)
{
str+=message;
}
start();
run(str);
}
}catch(Exceptione){
}
}
staticStringgetPortTypeName(intportType)
{
switch(portType)
{
caseCommPortIdentifier.PORT_I2C:
return"I2C";
caseCommPortIdentifier.PORT_PARALLEL:
return"Parallel";
caseCommPortIdentifier.PORT_RAW:
return"Raw";
caseCommPortIdentifier.PORT_RS485:
return"RS485";
caseCommPortIdentifier.PORT_SERIAL:
return"Serial";
default:
return"unknowntype";
}
}
publicHashSetgetAvailableSerialPorts()//本来static
{
HashSeth=newHashSet();
EnumerationthePorts=CommPortIdentifier.getPortIdentifiers();
while(thePorts.hasMoreElements())
{
CommPortIdentifiercom=(CommPortIdentifier)thePorts
.nextElement();
switch(com.getPortType())
{
caseCommPortIdentifier.PORT_SERIAL:
try
{
CommPortthePort=com.open("CommUtil",50);
thePort.close();
h.add(com);
}
catch(PortInUseExceptione)
{
System.out.println("Port,"+com.getName()
+",isinuse.");
}
catch(Exceptione)
{
System.out.println("Failedtoopenport"
+com.getName()+e);
}
}
}
returnh;
}
}
//ASCII表
//-------------------------------------------------------------
//ASCIICharacters
//
//DecHexCharCodeDecHexChar
//
//00NUL6440@
//11SOH6541A
//22STX6642B
//33ETX6743C
//44EOT6844D
//55ENQ6945E
//66ACK7046F
//77BEL7147G
//88BS7248H
//99HT7349I
//100ALF744AJ
//110BVT754BK
//120CFF764CL
//130DCR774DM
//140ESO784EN
//150FSI794FO
//1610SLE8050P
//1711CS18151Q
//1812DC28252R
//1913DC38353S
//2014DC48454T
//2115NAK8555U
//2216SYN8656V
//2317ETB8757W
//2418CAN8858X
//2519EM8959Y
//261ASIB905AZ
//271BESC915B[
//925C\
//281CFS935D]
//291DGS945E^
//301ERS955F_
//311FUS9660`
//3220(space)9761a
//3321!9862b
//3422"
//9963c
//3523#10064d
//3624$
//3725%10165e
//3826&10266f
//3927'10367g
//4028(10468h
//4129)10569i
//422A*1066Aj
//432B+1076Bk
//442C,1086Cl
//452D-1096Dm
//462E.1106En
//472F/1116Fo
//4830011270p
//4931111372q
//5032211472r
//5133311573s
//5234411674t
//5335511775u
//5436611876v
//5537711977w
//5638812078x
//5739912179y
//583A:1227Az
//593B;1237B{
//603C<1247C|
//613D=1257D}
//623E>1267E~
//633F?1277F
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。