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java - 通过 UAC 提升 ProcessBuilder 进程?

转载 作者:太空狗 更新时间:2023-10-29 22:55:47 24 4
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我正在尝试运行外部可执行文件,但显然它需要提升。代码是这样的,修改自使用 ProcessBuilder 的示例(因此数组只有一个参数):

    public static void main(String[] args) throws IOException {
File demo = new File("C:\\xyzwsdemo");
if(!demo.exists()) demo.mkdirs();
String[] command = {"C:\\fakepath\\bsdiff4.3-win32\\bspatch.exe"};
ProcessBuilder pb = new ProcessBuilder( command );
Process process = pb.start();
InputStream is = process.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
String line;
System.out.printf("Output of running %s is:\n", Arrays.toString(command));
while ((line = br.readLine()) != null) {
System.out.println(line);
}
try {
int exitValue = process.waitFor();
System.out.println("\n\nExit Value is " + exitValue);
} catch (InterruptedException e) {
e.printStackTrace();
}
}

运行时返回:

Exception in thread "main" java.io.IOException: Cannot run program "C:\Users\Gilliane\Downloads\bsdiff4.3-win32\bspatch.exe": CreateProcess error=740, The requested operation requires elevation

我四处浏览了一下,知道在 C# 中,您可以通过执行此操作来请求提升,(从 this thread 可以看出):

startInfo.Verb = "runas";

但是,我在 ProcessBuilder 中看不到任何类似的东西。另一种方法是让 Elevation Tools安装在目标系统上,并使用 ProcessBuilder 调用“提升”提示。但是,我不想强​​迫使用我的程序的人也安装这些提升工具。

还有别的办法吗?

最佳答案

ProcessBuilder 无法做到这一点,您需要调用 Windows API。

我用过 JNA使用类似于以下的代码实现此目的:

Shell32X.java:

import com.sun.jna.Native;
import com.sun.jna.Pointer;
import com.sun.jna.Structure;
import com.sun.jna.WString;
import com.sun.jna.platform.win32.Shell32;
import com.sun.jna.platform.win32.WinDef.HINSTANCE;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinNT.HANDLE;
import com.sun.jna.platform.win32.WinReg.HKEY;
import com.sun.jna.win32.W32APIOptions;

public interface Shell32X extends Shell32
{
Shell32X INSTANCE = (Shell32X)Native.loadLibrary("shell32", Shell32X.class, W32APIOptions.UNICODE_OPTIONS);

int SW_HIDE = 0;
int SW_MAXIMIZE = 3;
int SW_MINIMIZE = 6;
int SW_RESTORE = 9;
int SW_SHOW = 5;
int SW_SHOWDEFAULT = 10;
int SW_SHOWMAXIMIZED = 3;
int SW_SHOWMINIMIZED = 2;
int SW_SHOWMINNOACTIVE = 7;
int SW_SHOWNA = 8;
int SW_SHOWNOACTIVATE = 4;
int SW_SHOWNORMAL = 1;

/** File not found. */
int SE_ERR_FNF = 2;

/** Path not found. */
int SE_ERR_PNF = 3;

/** Access denied. */
int SE_ERR_ACCESSDENIED = 5;

/** Out of memory. */
int SE_ERR_OOM = 8;

/** DLL not found. */
int SE_ERR_DLLNOTFOUND = 32;

/** Cannot share an open file. */
int SE_ERR_SHARE = 26;



int SEE_MASK_NOCLOSEPROCESS = 0x00000040;


int ShellExecute(int i, String lpVerb, String lpFile, String lpParameters, String lpDirectory, int nShow);
boolean ShellExecuteEx(SHELLEXECUTEINFO lpExecInfo);



public static class SHELLEXECUTEINFO extends Structure
{
/*
DWORD cbSize;
ULONG fMask;
HWND hwnd;
LPCTSTR lpVerb;
LPCTSTR lpFile;
LPCTSTR lpParameters;
LPCTSTR lpDirectory;
int nShow;
HINSTANCE hInstApp;
LPVOID lpIDList;
LPCTSTR lpClass;
HKEY hkeyClass;
DWORD dwHotKey;
union {
HANDLE hIcon;
HANDLE hMonitor;
} DUMMYUNIONNAME;
HANDLE hProcess;
*/

public int cbSize = size();
public int fMask;
public HWND hwnd;
public WString lpVerb;
public WString lpFile;
public WString lpParameters;
public WString lpDirectory;
public int nShow;
public HINSTANCE hInstApp;
public Pointer lpIDList;
public WString lpClass;
public HKEY hKeyClass;
public int dwHotKey;

/*
* Actually:
* union {
* HANDLE hIcon;
* HANDLE hMonitor;
* } DUMMYUNIONNAME;
*/
public HANDLE hMonitor;
public HANDLE hProcess;

protected List getFieldOrder() {
return Arrays.asList(new String[] {
"cbSize", "fMask", "hwnd", "lpVerb", "lpFile", "lpParameters",
"lpDirectory", "nShow", "hInstApp", "lpIDList", "lpClass",
"hKeyClass", "dwHotKey", "hMonitor", "hProcess",
});
}
}

}

Elevator.java:

package test;

import test.Shell32X.SHELLEXECUTEINFO;

import com.sun.jna.WString;
import com.sun.jna.platform.win32.Kernel32;
import com.sun.jna.platform.win32.Kernel32Util;

public class Elevator
{
public static void main(String... args)
{
executeAsAdministrator("c:\\windows\\system32\\notepad.exe", "");
}

public static void executeAsAdministrator(String command, String args)
{
Shell32X.SHELLEXECUTEINFO execInfo = new Shell32X.SHELLEXECUTEINFO();
execInfo.lpFile = new WString(command);
if (args != null)
execInfo.lpParameters = new WString(args);
execInfo.nShow = Shell32X.SW_SHOWDEFAULT;
execInfo.fMask = Shell32X.SEE_MASK_NOCLOSEPROCESS;
execInfo.lpVerb = new WString("runas");
boolean result = Shell32X.INSTANCE.ShellExecuteEx(execInfo);

if (!result)
{
int lastError = Kernel32.INSTANCE.GetLastError();
String errorMessage = Kernel32Util.formatMessageFromLastErrorCode(lastError);
throw new RuntimeException("Error performing elevation: " + lastError + ": " + errorMessage + " (apperror=" + execInfo.hInstApp + ")");
}
}
}

关于java - 通过 UAC 提升 ProcessBuilder 进程?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/11041509/

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