方法已找到，使用Jna,jna-platform来调用windows api，具体方法如下
public int getCurrentProcessThreadCount() {
int cnt = 0;
MyKernel32 mk = MyKernel32.INSTANCE;
int id = mk.GetCurrentProcessId();
HANDLE hProcessSnap = mk.CreateToolhelp32Snapshot(Tlhelp32.TH32CS_SNAPPROCESS, new WinDef.DWORD(id));
if (hProcessSnap == WinBase.INVALID_HANDLE_VALUE) {
return cnt;
}
Tlhelp32.PROCESSENTRY32 pe32 = new Tlhelp32.PROCESSENTRY32();
boolean flag = mk.Process32First(hProcessSnap, pe32);
WinDef.DWORD dword;
while (flag) {
dword = pe32.th32ProcessID;
if (id == dword.intValue()) {
cnt = pe32.cntThreads.intValue();
break;
}
flag = mk.Process32Next(hProcessSnap, pe32);
}
return cnt;
}
