java獲得PID

Java

class JavaHowTo {
  public native long getCurrentProcessId();
  static {
    System.loadLibrary("jni2");
  }
}

```{.java} public class JNIJavaHowTo { public static void main(String[] args) { JavaHowTo jht = new JavaHowTo(); System.out.println("Press Any key..."); java.io.BufferedReader input = new java.io.BufferedReader(new java.io.InputStreamReader(System.in)); try { input.readLine();} catch (Exception e) { e.printStackTrace();} System.out.println(jht.getCurrentProcessId()); } }

```{cpp}
// jni2.cpp : Defines the entry point for the DLL application.
//

#include "stdafx.h"
#include <process.h>
#include "JavaHowTo.h" 

BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
                     )
{
    return TRUE;
}

JNIEXPORT jlong JNICALL Java_JavaHowTo_getCurrentProcessId
  (JNIEnv *, jobject) {

     // return GetCurrentProcessId();
    return getpid();
}