Windows 上的 Java 默认不支持 unicode 输出。我通过使用 JNA 库调用 Native API 编写了一个解决方法。该方法将调用 WriteConsoleW 以在控制台上输出 unicode。
import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.ptr.IntByReference;
import com.sun.jna.win32.StdCallLibrary;
/** For unicode output on windows platform
* @author Sandy_Yin
*
*/
public class Console {
private static Kernel32 INSTANCE = null;
public interface Kernel32 extends StdCallLibrary {
public Pointer GetStdHandle(int nStdHandle);
public boolean WriteConsoleW(Pointer hConsoleOutput, char[] lpBuffer,
int nNumberOfCharsToWrite,
IntByReference lpNumberOfCharsWritten, Pointer lpReserved);
}
static {
String os = System.getProperty("os.name").toLowerCase();
if (os.startsWith("win")) {
INSTANCE = (Kernel32) Native
.loadLibrary("kernel32", Kernel32.class);
}
}
public static void println(String message) {
boolean successful = false;
if (INSTANCE != null) {
Pointer handle = INSTANCE.GetStdHandle(-11);
char[] buffer = message.toCharArray();
IntByReference lpNumberOfCharsWritten = new IntByReference();
successful = INSTANCE.WriteConsoleW(handle, buffer, buffer.length,
lpNumberOfCharsWritten, null);
if(successful){
System.out.println();
}
}
if (!successful) {
System.out.println(message);
}
}
}