好吧，即时通讯迷路了，甚至不知道谷歌在这一点上。
我正在使用JSSC从串行端口读取数据。
当我将其打印为校验图时，数据被顶起。
它可以打印几行，然后按单个字符打印。
如果我使用“ printf”，它将正常打印
$GPRMC,212729.000,A,3805.8438,N,08459.5498,W,0.00,280.71,031117,,,D*73
$GPVTG,280.71,T,,M,0.00,N,0.0,K0
F
$
G
P
G
这是for循环即时通讯使用：
for (String s: data2) {
System.out.println(s);
}
其他代码：
String getData = serialPort.readString(event.getEventValue());
List<String> data2 = new ArrayList<String>(Arrays.asList(getData.split("$")));
如果我只是打印它，我会选择printf。
我需要用$符号将每个句子分开。
任何帮助，将不胜感激。
import jssc.SerialPort;
import jssc.SerialPortEvent;
import jssc.SerialPortEventListener; import jssc.SerialPortException;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
public class test {
static SerialPort serialPort;
public static void main(String[] args) {
serialPort = new SerialPort("COM!");
try {
serialPort.openPort();//Open ports
serialPort.setParams(4800, 8, 1, 0);//Set params
int mask = SerialPort.MASK_RXCHAR + SerialPort.MASK_CTS + SerialPort.MASK_DSR;//Prepare mask
serialPort.setEventsMask(mask);//Set mask
serialPort.addEventListener(new SerialPortReader());//Add SerialPortEventListener
}
catch (SerialPortException ex) {
System.out.println(ex);
}
}public void serialEvent(SerialPortEvent event) {
// if(event.isRXCHAR()){//If data is available
// if(event.getInputBufferBytesCount() > 1){//Check bytes count in the input buffer
//Read data, if 10 bytes available
try {
String getdata = serialPort.readString(event.getEventValue());
String delimiter = "$";
List<String> data2 = new ArrayList<String>(Arrays.asList(getdata.split("$")));
for (String s: data2) {
System.out.printf("NEW" + s);
}
}
catch (SerialPortException ex) {
}
每次请求更新的代码
import jssc.SerialPort;
import jssc.SerialPortEvent;
import jssc.SerialPortEventListener; import jssc.SerialPortException;
//import java.util.Arrays;
//import java.awt.List;
//import java.util.Base64;
//import java.io.BufferedReader;
//import java.io.ByteArrayInputStream;
//import java.io.InputStream;
//import java.io.InputStreamReader;
//import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.io.IOException;
import java.lang.*;
//import static java.util.Arrays.asList;
//import java.util.List;
//import java.util.stream.Collectors;
//import org.apache.commons.lang3.StringUtils;
public class test {
static ArrayList<String> data = new ArrayList<String>();
static SerialPort serialPort;
public static void main(String[] args) {
serialPort = new SerialPort("COM1");
try {
serialPort.openPort();//Open ports
serialPort.setParams(4800, 8, 1, 0);//Set params
int mask = SerialPort.MASK_RXCHAR + SerialPort.MASK_CTS + SerialPort.MASK_DSR;//Prepare mask
serialPort.setEventsMask(mask);//Set mask
serialPort.addEventListener(new SerialPortReader());//Add SerialPortEventListener
}
catch (SerialPortException ex) {
System.out.println(ex);
}
}
/*
* In this class must implement the method serialEvent, through it we learn about
* events that happened to our port. But we will not report on all events but only
* those that we put in the mask. In this case the arrival of the data and change the
* status lines CTS and DSR
*/
static class SerialPortReader implements SerialPortEventListener {
public void serialEvent(SerialPortEvent event) {
// if(event.isRXCHAR()){//If data is available
// if(event.getEventValue() < 577){//Check bytes count in the input buffer
//Read data, if 10 bytes available
try {
String getdata = serialPort.readString(event.getEventValue());
String[] parts= getdata.split("$");
data.set(data.size() - 1, data.get(data.size() - 1) + parts[0]);
for (int i=1; i<parts.length; i++) {
data.add(parts[i]);
}
}
catch (SerialPortException ex) {
}
}
}
}
最佳答案
您的serialEvent方法只是为每个EventListener触发的SerialPortEvent，但是不能保证数据将“完整”到达，因此您应在类级别声明List，获取到达的数据，然后以适当的方式存储它。就像是：
public class test {
// ...
static List<String> data = new ArrayList<String>();
// ...
public void serialEvent(SerialPortEvent event) {
try {
String getdata = serialPort.readString(event.getEventValue());
// String.split takes a regular expression. In regular expressions,
// the dollar sign ($) by it's own means the end of the line, so you
// have to escape it using a backslash (\), but since it's a string
// you have to escape that one with another backslash so it get's
// passed correctly, thus searching for the dollar sign and not the
// end of the line
String[] parts = getdata.split("\\$");
// Append whatever is before the first dollar sign to the last item
// in your data
if(!data.isEmpty()){
data.set(data.size() - 1, data.get(data.size() - 1) + parts[0]);
}
// Append the rest of the parts in your data
for (int i=1; i<parts.length; i++) {
data.add(parts[i]);
}
}
catch (SerialPortException ex) {}
// ...
}
// ...
}
关于java - 使用串行端口阵列列表中的数据，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/47104724/