在 zamanillo 的帮助下，我现在可以自己回答这个问题。
jssc 2.8.0 无法做到这一点。
我们正在采取一些措施来扩展 jssc，但我不知道发布时间表，也不知道是否有动力去解决这个问题。
扩展是方法
SerialPortList->getPortProperties(String portName)
jssc 2.8.0 for linux 和 mac 的修改版本中提供了实现。 Windows 实现更难（找到）。
这是取自https://github.com/gohai/java-simple-serial-connector/blob/processing/src/cpp/_nix_based/jssc.cpp的linux和mac代码
JNIEXPORT jobjectArray JNICALL Java_jssc_SerialNativeInterface_getPortProperties
(JNIEnv *env, jclass cls, jstring portName) {
const char* portNameChar = (const char*)env->GetStringUTFChars(portName, NULL);
jclass stringClass = env->FindClass("Ljava/lang/String;");
jobjectArray ret = env->NewObjectArray(5, stringClass, NULL);
#ifdef __APPLE__
// this code is based on QtSerialPort
CFMutableDictionaryRef matching = IOServiceMatching(kIOSerialBSDServiceValue);
io_iterator_t iter = 0;
kern_return_t kr = IOServiceGetMatchingServices(kIOMasterPortDefault, matching, &iter);
if (kr != kIOReturnSuccess) {
env->ReleaseStringUTFChars(portName, portNameChar);
return ret;
}
io_registry_entry_t service;
while ((service = IOIteratorNext(iter))) {
// compare portName against cu and tty devices
bool found = false;
CFTypeRef cu = 0;
cu = IORegistryEntrySearchCFProperty(service, kIOServicePlane, CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0);
if (cu) {
char buffer[MAXPATHLEN];
CFStringGetCString(CFStringRef(cu), buffer, sizeof(buffer), kCFStringEncodingUTF8);
//fprintf(stdout, "getPortProperties: %s\n", buffer);
//fflush(stdout);
if (strcmp(portNameChar, buffer) == 0) {
found = true;
}
CFRelease(cu);
}
CFTypeRef tty = 0;
tty = IORegistryEntrySearchCFProperty(service, kIOServicePlane, CFSTR(kIODialinDeviceKey), kCFAllocatorDefault, 0);
if (tty) {
char buffer[MAXPATHLEN];
CFStringGetCString(CFStringRef(tty), buffer, sizeof(buffer), kCFStringEncodingUTF8);
//fprintf(stdout, "getPortProperties: %s\n", buffer);
//fflush(stdout);
if (strcmp(portNameChar, buffer) == 0) {
found = true;
}
CFRelease(tty);
}
if (!found) {
// not port we're looking for
//fprintf(stderr, "getPortProperties: %s not found", portNameChar);
//fflush(stderr);
IOObjectRelease(service);
continue;
}
io_registry_entry_t entry = service;
do {
int val = 0;
char buffer[255];
CFTypeRef idProduct = 0;
idProduct = IORegistryEntrySearchCFProperty(entry, kIOServicePlane, CFSTR(kUSBProductID), kCFAllocatorDefault, 0);
if (idProduct && !env->GetObjectArrayElement(ret, 0)) {
CFNumberGetValue(CFNumberRef(idProduct), kCFNumberIntType, &val);
sprintf(buffer, "%04x", val);
jstring tmp = env->NewStringUTF(buffer);
env->SetObjectArrayElement(ret, 0, tmp);
env->DeleteLocalRef(tmp);
CFRelease(idProduct);
}
CFTypeRef idVendor = 0;
idVendor = IORegistryEntrySearchCFProperty(entry, kIOServicePlane, CFSTR(kUSBVendorID), kCFAllocatorDefault, 0);
if (idVendor && !env->GetObjectArrayElement(ret, 1)) {
CFNumberGetValue(CFNumberRef(idVendor), kCFNumberIntType, &val);
sprintf(buffer, "%04x", val);
jstring tmp = env->NewStringUTF(buffer);
env->SetObjectArrayElement(ret, 1, tmp);
env->DeleteLocalRef(tmp);
CFRelease(idVendor);
}
CFTypeRef manufacturer = 0;
manufacturer = IORegistryEntrySearchCFProperty(entry, kIOServicePlane, CFSTR(kUSBVendorString), kCFAllocatorDefault, 0);
if (manufacturer && !env->GetObjectArrayElement(ret, 2)) {
CFStringGetCString(CFStringRef(manufacturer), buffer, sizeof(buffer), kCFStringEncodingUTF8);
jstring tmp = env->NewStringUTF(buffer);
env->SetObjectArrayElement(ret, 2, tmp);
env->DeleteLocalRef(tmp);
CFRelease(manufacturer);
}
CFTypeRef product = 0;
product = IORegistryEntrySearchCFProperty(entry, kIOServicePlane, CFSTR(kUSBProductString), kCFAllocatorDefault, 0);
if (product && !env->GetObjectArrayElement(ret, 3)) {
CFStringGetCString(CFStringRef(product), buffer, sizeof(buffer), kCFStringEncodingUTF8);
jstring tmp = env->NewStringUTF(buffer);
env->SetObjectArrayElement(ret, 3, tmp);
env->DeleteLocalRef(tmp);
CFRelease(product);
}
CFTypeRef serial = 0;
serial = IORegistryEntrySearchCFProperty(entry, kIOServicePlane, CFSTR(kUSBSerialNumberString), kCFAllocatorDefault, 0);
if (serial && !env->GetObjectArrayElement(ret, 4)) {
CFStringGetCString(CFStringRef(serial), buffer, sizeof(buffer), kCFStringEncodingUTF8);
jstring tmp = env->NewStringUTF(buffer);
env->SetObjectArrayElement(ret, 4, tmp);
env->DeleteLocalRef(tmp);
CFRelease(serial);
}
kr = IORegistryEntryGetParentEntry(entry, kIOServicePlane, &entry);
} while (kr == kIOReturnSuccess);
IOObjectRelease(entry);
IOObjectRelease(service);
}
IOObjectRelease(iter);
#endif // __APPLE__
env->ReleaseStringUTFChars(portName, portNameChar);
return ret;
}
对于 windows，我只在使用自定义 dll 的处理中找到了解决方案。