java - 列出所有进程？

Question

如何使用 JNA 4.5.0 获取 Java 中所有正在运行的进程的列表？

我已经尝试过这段代码:

WinNT winNT = (WinNT) Native.loadLibrary(WinNT.class, W32APIOptions.UNICODE_OPTIONS);
winNT.HANDLE snapshot = winNT.CreateToolhelp32Snapshot(Tlhelp32.TH32CS_SNAPPROCESS, new WinDef.DWORD(0));
Thelp32.PROCESSENTRY32.ByReference processEntry = new Tlhelp32.PROCESSENTRY32.ByReference();

while (winNT.Process32Next(snapshot, processEntry)) {
    System.out.println(processEntry.th32ProcessID + "\t" + Native.toString(processEntry.szExeFile));
}
winNT.CloseHandle(snapshot);

但它不起作用，因为它是为旧版本的 JNA 库编写的。

Answer 1

Kernel32 类中存在您现在正在寻找的一些功能。通过一些小的更正，您的代码片段可以正常工作:

import com.sun.jna.Native;
import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.Tlhelp32;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinNT;

public class Main {
    public static void main(String[] args) {
        Kernel32 kernel = Kernel32.INSTANCE;

        WinNT.HANDLE snapshot = kernel.CreateToolhelp32Snapshot(Tlhelp32.TH32CS_SNAPPROCESS, new WinDef.DWORD(0));
        Tlhelp32.PROCESSENTRY32.ByReference processEntry = new Tlhelp32.PROCESSENTRY32.ByReference();

        while (kernel.Process32Next(snapshot, processEntry)) {
            System.out.println(processEntry.th32ProcessID + "\t" + Native.toString(processEntry.szExeFile));
        }
        kernel.CloseHandle(snapshot);
    }
}