当我使用 Eclipse 和 NetBeans 6.8 运行以下代码时。我想查看计算机上可用的 COM 端口。在 Eclipse 中运行时，它返回所有可用的 COM 端口，但在 NetBeans 中运行时，它似乎找不到任何端口..
public static void test(){
Enumeration lists=CommPortIdentifier.getPortIdentifiers();
System.out.println(lists.hasMoreElements());
while (lists.hasMoreElements()) {
CommPortIdentifier cn=(CommPortIdentifier)lists.nextElement();
if ((CommPortIdentifier.PORT_SERIAL==cn.getPortType())) {
System.out.println(
"Name is serail portzzzz " +
cn.getName() +
" Owned status " +
cn.isCurrentlyOwned());
try{
SerialPort port1=(SerialPort)cn.open("ComControl",800000);
port1.setSerialPortParams(
9600,
SerialPort.DATABITS_8,
SerialPort.STOPBITS_1,
SerialPort.PARITY_NONE);
System.out.println("Before get stream");
OutputStream out=port1.getOutputStream();
InputStream input=port1.getInputStream();
System.out.println("Before write");
out.write("AT".getBytes());
System.out.println("After write");
int sample=0;
//while((( sample=input.read())!=-1)){
System.out.println("Before read");
//System.out.println(input.read() + "TEsting ");
//}
System.out.println("After read");
System.out.println("Receive timeout is "+port1.getReceiveTimeout());
}
catch(Exception e) {
System.err.println(e.getMessage());
}
}
else {
System.out.println(
"Name is parallel portzzzz " +
cn.getName() +
" Owned status " +
cn.isCurrentlyOwned() +
cn.getPortType()+" ");
}
}
}
使用 Netbeans 输出，
false
使用 Eclipse 输出，
true
Name is serail portzzzz COM1 Owned status false
Before get stream
Before write
After write
Before read
After read
Receive timeout is -1
Name is serail portzzzz COM2 Owned status false
Before get stream
Before write
After write
Before read
After read
Receive timeout is -1
Name is parallel portzzzz LPT1 Owned status false2
Name is parallel portzzzz LPT2 Owned status false2
您是否使用相同的 Java VM 在 NetBeans 和 Eclipse 中运行代码？
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