我也遇到了这个问题。我的情况如下:
在文本中:
HKEY_CURRENT_USER\Environment
Path REG_SZ %JAVA_HOME%\bin;C:\ProgramFiles\nodejs
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
JAVA_HOME REG_SZ C:\ProgramFiles\Java\jdk
Path REG_EXPAND_SZ C:\bin;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\
WindowsPowerShell\v1.0\;C:\Program Files\Intel\DMIX;c:\Program Files (x86)\Microsoft SQL Server\90\Tools\binn\;C:\Progra
m Files (x86)\Perforce;C:\ProgramFiles\010 Editor;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\ProgramFiles\
Git\cmd;C:\Program Files (x86)\Skype\Phone\
C:\Users\ssfang> echo %^JAVA_HOME% = "%^JAVA_HOME%" = %%JAVA_HOME%% %JAVA_HOME%
%JAVA_HOME% = "%^JAVA_HOME%" = %C:\ProgramFiles\Java\jdk% C:\ProgramFiles\Java\jdk
我发现注册表值 Path
的类型不同,因此我使用以下命令检查路径是否有效:
C:\Users\ssfang> where node java
C:\ProgramFiles\nodejs\node.exe
INFO: Could not find "java".
作为结果,我通过以下命令(
Setx)重置了本地(当前用户)环境:
C:\Users\ssfang> setx PATH %^JAVA_HOME%\bin;"C:\ProgramFiles\nodejs"
SUCCESS: Specified value was saved.
C:\Users\ssfang> reg query HKEY_CURRENT_USER\Environment /v Path
HKEY_CURRENT_USER\Environment
Path REG_EXPAND_SZ %JAVA_HOME%\bin;C:\ProgramFiles\nodejs
C:\Users\ssfang> where node java
C:\ProgramFiles\nodejs\node.exe
INFO: Could not find "java".
C:\Users\ssfang>echo %PATH%
C:\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Fi
les\Intel\DMIX;c:\Program Files (x86)\Microsoft SQL Server\90\Tools\binn\;C:\Program Files (x86)\Perforce;C:\ProgramFile
s\010 Editor;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\ProgramFiles\Git\cmd;C:\Program Files (x86)\Skype\
Phone\;%JAVA_HOME%\bin;C:\ProgramFiles\nodejs
但是,在当前的过程中,它不能将这些更改传播到其他正在运行的进程。
然而,如果您直接在注册表编辑器中修改用户环境变量,
对环境变量的这些修改不会立即生效。例如,如果您在进行更改后启动另一个命令提示符,则环境变量将反映先前(而不是当前)的值。这些更改直到您注销并重新登录后才会生效。
要在无需注销的情况下实现这些更改,请向系统中的所有窗口广播WM_SETTINGCHANGE消息,以便任何感兴趣的应用程序(例如Windows资源管理器、程序管理器、任务管理器、控制面板等)可以执行更新操作。
详见如何将环境变量传播到系统
这里,我提供了一个PowerShell脚本来完成此操作:
if (-not ([System.Management.Automation.PSTypeName]'PInvoke.Program').Type)
{
$sig=@"
using System;
using System.Runtime.InteropServices;
using System.Text;
using System.Collections.Generic;
// The global namespace is the "root" namespace: global::system will always refer to the .NET Framework namespace System.
///P/Invoke (Platform Invoke)
namespace PInvoke
{
public static class User32
{
/// http://www.pinvoke.net/default.aspx/Constants/HWND.html
// public const IntPtr HWND_BROADCAST = new IntPtr(0xffff);
/// https://msdn.microsoft.com/en-us/library/windows/desktop/ms725497(v=vs.85).aspx
/// http://www.pinvoke.net/default.aspx/Constants/WM.html
public const UInt32 WM_SETTINGCHANGE = 0x001A;
// SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM) "Environment", SMTO_ABORTIFHUNG, 5000, &dwReturnValue);
/// https://msdn.microsoft.com/en-us/library/windows/desktop/ms644952(v=vs.85).aspx
/// If the function succeeds, the return value is nonzero.
[System.Runtime.InteropServices.DllImport("user32.dll", EntryPoint = "SendMessageTimeout", SetLastError = true)]
public static extern uint SendMessageTimeout(IntPtr hWnd, uint Msg, int wParam, string lParam, SendMessageTimeoutFlags fuFlags, uint uTimeout, out int lpdwResult);
}
[Flags]
public enum SendMessageTimeoutFlags : uint
{
SMTO_NORMAL = 0x0,
SMTO_BLOCK = 0x1,
SMTO_ABORTIFHUNG = 0x2,
SMTO_NOTIMEOUTIFNOTHUNG = 0x8,
SMTO_ERRORONEXIT = 0x20
}
public class Program
{
public static void Main(string[] args)
{
//int innerPinvokeResult;
//uint pinvokeResult = User32.SendMessageTimeout(User32.HWND_BROADCAST, User32.WM_SETTINGCHANGE, 0, "Environment", SendMessageTimeoutFlags.SMTO_NORMAL, 1000, out innerPinvokeResult);
Console.WriteLine("Over!!!!!!!!!!!!!!!!!!!!!!!!!");
}
}
}
"@
Add-Type -TypeDefinition $sig
}
$innerPinvokeResult=[int]0
[PInvoke.User32]::SendMessageTimeout([IntPtr]0xffff, [PInvoke.User32]::WM_SETTINGCHANGE, 0, "Environment", [PInvoke.SendMessageTimeoutFlags]::SMTO_NORMAL, 1000, [ref]$innerPinvokeResult);
Setx
setx [/s [/u [] [/p []]]] [/m]
这是关于编程的内容,保留了HTML格式,不进行解释。
/m Specifies to set the variable in the system environment. The default setting is the local environment