使用 RXTX 运行程序时出错
Error while running program using RXTX
我在我的应用程序中使用 RXTX(gnu.io.*;) 进行串口通信,我已经下载了库并添加了如下支持文件:
- 在
C:\Program Files\Java\jdk1.8.0_25\jre\bin
中复制了 rxtxParallel.dll
和 rxtxSerial.dll
- 已在
C:\Program Files\Java\jdk1.8.0_25\jre\lib\ext
内复制 RXTXcomm.jar
我正在尝试执行下面提到的程序:
import gnu.io.*;
import java.io.*;
import java.util.*;
public class SimpleWrite implements Runnable, SerialPortEventListener {
public void run() {
}
static Enumeration portList;
static CommPortIdentifier portId;
static String messageString = "AAA";
static char ch = '"';
static String dest = ch + "XXXXXXXXXXX" + ch; // 11 Digit Mobile Number.
static InputStream inputStream;
static SerialPort serialPort;
static OutputStream outputStream;
public void serialEvent(SerialPortEvent event) {
switch (event.getEventType()) {
case SerialPortEvent.BI:
case SerialPortEvent.OE:
case SerialPortEvent.FE:
case SerialPortEvent.PE:
case SerialPortEvent.CD:
case SerialPortEvent.CTS:
case SerialPortEvent.DSR:
case SerialPortEvent.RI:
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE: {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
try {
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (IOException e) {
System.err.println("Error while reading Port " + e);
}
break;
}
} //switch
}
public SimpleWrite(SerialPort serial) {
try {
inputStream = serial.getInputStream();
try {
serial.addEventListener(this);
} catch (TooManyListenersException e) {
System.out.println("Exception in Adding Listener" + e);
}
serial.notifyOnDataAvailable(true);
} catch (Exception ex) {
System.out.println("Exception in getting InputStream" + ex);
}
}
public static void main(String[] args) {
String line1 = "AT+CSMS=1\r\n";
String line2 = "AT+CMGS=" + dest + "\r\n";
String line3 = messageString + "\r\n";
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
if (portId.getName().equals("COM3")) {
System.out.println("SMS Sending....Port Found");
try {
serialPort = (SerialPort) portId.open("SimpleWriteApp", 2000);
SimpleWrite wr = new SimpleWrite(serialPort);
} catch (PortInUseException e) {
System.out.println("Port In Use " + e);
}
try {
outputStream = serialPort.getOutputStream();
} catch (IOException e) {
System.out.println("Error writing to output stream " + e);
}
try {
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e) {
}
try {
outputStream.write(line1.getBytes());
outputStream.write(line1.getBytes());
outputStream.write(line2.getBytes());
outputStream.write(line3.getBytes());
outputStream.write(26);
outputStream.flush();
} catch (Exception e) {
System.out.println("Error writing message " + e);
}
}
}
}
}
/**
* show text in the text window
*
* @param Text text string to show on the display
*/
public static void showText(String Text) {
System.out.println(Text);
}
}
但是我在运行我的应用程序时收到如下错误:
C:\>javac SimpleWrite.java
C:\>java SimpleWrite
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while
loading gnu.io.RXTXCommDriver
Exception in thread "Thread-0" java.lang.UnsatisfiedLinkError: no rxtxSerial in
java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
at SerialConnection.openConnection(SerialConnection.java:71)
at Sender.send(Sender.java:46)
at SMSClient.run(SMSClient.java:39)
at java.lang.Thread.run(Unknown Source)
我已经检查过,但显示的所有解决方案都被视为 IDE
s。如何解决这个问题?请指导我,我是新手!
如果您 运行 从 IDE 安装程序,请确保您项目的 java 平台设置为您复制库的平台,即 C:\程序 Files\Java\jdk1.8.0_25\
因为,IDE 带有默认 java 平台,当您 运行 项目使用默认 Java 平台时。
您可以在项目的属性对话框下更改项目使用的平台。
我在我的应用程序中使用 RXTX(gnu.io.*;) 进行串口通信,我已经下载了库并添加了如下支持文件:
- 在
C:\Program Files\Java\jdk1.8.0_25\jre\bin
中复制了 - 已在
C:\Program Files\Java\jdk1.8.0_25\jre\lib\ext
内复制
rxtxParallel.dll
和 rxtxSerial.dll
RXTXcomm.jar
我正在尝试执行下面提到的程序:
import gnu.io.*;
import java.io.*;
import java.util.*;
public class SimpleWrite implements Runnable, SerialPortEventListener {
public void run() {
}
static Enumeration portList;
static CommPortIdentifier portId;
static String messageString = "AAA";
static char ch = '"';
static String dest = ch + "XXXXXXXXXXX" + ch; // 11 Digit Mobile Number.
static InputStream inputStream;
static SerialPort serialPort;
static OutputStream outputStream;
public void serialEvent(SerialPortEvent event) {
switch (event.getEventType()) {
case SerialPortEvent.BI:
case SerialPortEvent.OE:
case SerialPortEvent.FE:
case SerialPortEvent.PE:
case SerialPortEvent.CD:
case SerialPortEvent.CTS:
case SerialPortEvent.DSR:
case SerialPortEvent.RI:
case SerialPortEvent.OUTPUT_BUFFER_EMPTY:
break;
case SerialPortEvent.DATA_AVAILABLE: {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
try {
while ((line = reader.readLine()) != null) {
System.out.println(line);
}
} catch (IOException e) {
System.err.println("Error while reading Port " + e);
}
break;
}
} //switch
}
public SimpleWrite(SerialPort serial) {
try {
inputStream = serial.getInputStream();
try {
serial.addEventListener(this);
} catch (TooManyListenersException e) {
System.out.println("Exception in Adding Listener" + e);
}
serial.notifyOnDataAvailable(true);
} catch (Exception ex) {
System.out.println("Exception in getting InputStream" + ex);
}
}
public static void main(String[] args) {
String line1 = "AT+CSMS=1\r\n";
String line2 = "AT+CMGS=" + dest + "\r\n";
String line3 = messageString + "\r\n";
portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
portId = (CommPortIdentifier) portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
if (portId.getName().equals("COM3")) {
System.out.println("SMS Sending....Port Found");
try {
serialPort = (SerialPort) portId.open("SimpleWriteApp", 2000);
SimpleWrite wr = new SimpleWrite(serialPort);
} catch (PortInUseException e) {
System.out.println("Port In Use " + e);
}
try {
outputStream = serialPort.getOutputStream();
} catch (IOException e) {
System.out.println("Error writing to output stream " + e);
}
try {
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
} catch (UnsupportedCommOperationException e) {
}
try {
outputStream.write(line1.getBytes());
outputStream.write(line1.getBytes());
outputStream.write(line2.getBytes());
outputStream.write(line3.getBytes());
outputStream.write(26);
outputStream.flush();
} catch (Exception e) {
System.out.println("Error writing message " + e);
}
}
}
}
}
/**
* show text in the text window
*
* @param Text text string to show on the display
*/
public static void showText(String Text) {
System.out.println(Text);
}
}
但是我在运行我的应用程序时收到如下错误:
C:\>javac SimpleWrite.java
C:\>java SimpleWrite
java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while
loading gnu.io.RXTXCommDriver
Exception in thread "Thread-0" java.lang.UnsatisfiedLinkError: no rxtxSerial in
java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:83)
at SerialConnection.openConnection(SerialConnection.java:71)
at Sender.send(Sender.java:46)
at SMSClient.run(SMSClient.java:39)
at java.lang.Thread.run(Unknown Source)
我已经检查过,但显示的所有解决方案都被视为 IDE
s。如何解决这个问题?请指导我,我是新手!
如果您 运行 从 IDE 安装程序,请确保您项目的 java 平台设置为您复制库的平台,即 C:\程序 Files\Java\jdk1.8.0_25\
因为,IDE 带有默认 java 平台,当您 运行 项目使用默认 Java 平台时。
您可以在项目的属性对话框下更改项目使用的平台。