使用 Java 自动检测哪个 Com 端口连接到 USB GSM 调制解调器
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Automatically detect which Com Port is connected to a USB GSM Modem using Java
提问by tomato
I wrote a Java application that reads and sends SMS messages from a USB GSM modem. I'm using SMSLib (which uses JavaCommAPI), and it runs on Windows. I need to pass in the COM PORT, that the modem appears to be connected to.
我编写了一个 Java 应用程序，用于从 USB GSM 调制解调器读取和发送 SMS 消息。我正在使用 SMSLib（它使用 JavaCommAPI），它在 Windows 上运行。我需要传入调制解调器似乎已连接到的 COM 端口。
So far, I've been looking up the COM PORT manually using the Windows Device Manager, and write it into a properties file. I'm wondering if there's a way to detect which COM PORT, the modem is connected to programmatically?
到目前为止，我一直在使用 Windows 设备管理器手动查找 COM 端口，并将其写入属性文件。我想知道是否有办法检测调制解调器以编程方式连接到哪个 COM 端口？
- It'll save the trouble of looking it up every time
- The port number changes if I unplug/replug it sometimes
- 省去每次查的麻烦
- 如果我有时拔掉/重新插入它，端口号会改变
Thanks!!
谢谢！！
采纳答案by Satish
package com.cubepro.util;
import java.util.Collection;
import java.util.Collections;
import java.util.Enumeration;
import java.util.Formatter;
import org.apache.log4j.Logger;
import org.smslib.helper.CommPortIdentifier;
import com.cubepro.general.CommonConstants;
import com.cubepro.util.SendMessage;
public class CommPortTester {
private static final String _NO_DEVICE_FOUND = " no device found";
private final static Formatter _formatter = new Formatter(System.out);
private static Logger log = Logger.getLogger(CommPortTester.class);
static CommPortIdentifier portId;
static Enumeration<CommPortIdentifier> portList;
static int bauds[] = { 9600, 14400, 19200, 28800, 33600, 38400, 56000,
57600, 115200 };
public static final String MAINCLASS = "org.smslib.Service";
public CommPortTester() throws Exception {
Class.forName(MAINCLASS);
}
/**
* Wrapper around {@link CommPortIdentifier#getPortIdentifiers()} to be
* avoid unchecked warnings.
*/
private static Enumeration<CommPortIdentifier> getCleanPortIdentifiers() {
return CommPortIdentifier.getPortIdentifiers();
}
public String testAndQualifyPort() throws Exception {
String status = CommonConstants.MODEM_STATUS_ERROR;
SendMessage sendMessage = new SendMessage();
log.debug("\nSearching for devices...");
portList = getCleanPortIdentifiers();
while (portList.hasMoreElements()) {
portId = portList.nextElement();
if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) {
_formatter.format("%nFound port: %-5s%n", portId.getName());
try {
if(portId.getName()
boolean comPortSuccess = sendMessage.doIt(portId.getName());
if(comPortSuccess == true){
return portId.getName();
}
} catch (final Exception e) {
log.debug(" Modem error occured -",e);
}
}
}
log.debug("\nTest complete.");
return status;
}
public static void main(String[]args){
try{
CommPortTester tester = new CommPortTester();
tester.testAndQualifyPort();
}catch(Exception e){
e.printStackTrace();
}
}
}
