Question

我在输出下面有以下代码。

我的问题是分割功能无法正常/一致地工作。我想分开每个＆＃34; $＆＃34;。原因是我想解析GGA和RMC数据。在任何人花费很多时间之前，这是正确的方法吗？我的步骤：读取GPS数据将句子类型（GGA，RMC）存储在仅存储最新数据的变量中解析那些变量并传递给程序然后传递给数据库？

[ $ GPGSV ,,,,,,,,, * 43

$ GPRMC，055106.000，A 11 N ,, W，0.00,61.40 ,,,, A * 4D]

[ $ GPVTG ,,,,,,Ť...，M ,,,, K，A * 3E

$ GPGGA，055107.000，，N ,,W¯¯,,,,男，-33.3，M，0000 * 6T

$ GPGLL 11 N ,, W，055107.000，A，A * 44]

[

$ GPRMC，055107.000，A 11 N ,, W，0.00 ,,,,, A * 4F

$ GPVTG ,,,,,,Ť...，M，0.00，0.0，，A * 3E]

[

$ GPGGA，055108.000,3，N ,, W，1,09,0.9 ,,, M，0000 * 62]

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.util.List;
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 List<String> datat = 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()+1);
                String[] parts= getdata.split("$");

                if(!datat.isEmpty()){
                    datat.set(datat.size() - 1, datat.get(datat.size() - 1) + parts[0]);
                }
                //data.set(data.size() - 1, data.get(data.size() - 1) + parts[0]);
                for (int i=1; i<parts.length; i++) {
                    datat.add(parts[i]);
               //     System.out.println(Arrays.toString(parts));
                }

               String[] data2 = datat.toArray(new String[0]);

               for(String s : data2) 
               {

                   data2 = s.split("$");

                   List<String> data3 = Arrays.asList(data2);
                 //  int testing = data3.size();
                   System.out.println(data3);


               }




                }
                catch (SerialPortException ex) {                  
             }

       }        
}


}

Answer 1

split函数采用正则表达式，而不是字符串，你在正则表达式（$）中使用特殊字符然后你需要scape那个字符

String s= "$........$...$....";
String[] data2= s.split("\\$");

Java分裂不一致

1 个答案: