右键 PowerShell 或 Windows Terminal，执行：

ps1
powershell -ExecutionPolicy Bypass -File .\fix-uclient-java-proxy.ps1

执行后：

1. 完全关闭 UClient；
2. 任务管理器结束所有 javaw.exe；
3. 重新打开 UClient；
4. 再进财务系统。

撤销方法

如果以后要恢复：

ps1
powershell -ExecutionPolicy Bypass -File .\fix-uclient-java-proxy.ps1 -Undo

脚本做的事主要是设置当前用户环境变量：

js
_JAVA_OPTIONS=-Djava.net.useSystemProxies=false ...
JAVA_TOOL_OPTIONS=-Djava.net.useSystemProxies=false ...

ps1
<#
.SYNOPSIS
  Fix Yonyou UClient / U8 Cloud slow startup caused by Java using Windows proxy.

.DESCRIPTION
  UClient launches javaw.exe with -Djava.net.useSystemProxies=true, so Java may use
  Qv2ray/V2Ray/Clash local proxy and get stuck on euc.yonyoucloud.com with errors
  such as "Malformed reply from SOCKS server". This script sets user-level Java
  environment variables so Java ignores system proxy, while keeping your proxy
  client usable for other applications.

.USAGE
  PowerShell:
    powershell -ExecutionPolicy Bypass -File .\fix-uclient-java-proxy.ps1

  Then fully close UClient and all javaw.exe processes, and reopen UClient.

  To undo:
    powershell -ExecutionPolicy Bypass -File .\fix-uclient-java-proxy.ps1 -Undo
#>

param(
  [switch]$Undo
)

$ErrorActionPreference = 'Stop'

$NonProxyHosts = '112.74.98.8|*.yonyou.com|*.yonyoucloud.com|59.110.247.93|39.98.81.66|localhost|127.*'
$JavaOptions = "-Djava.net.useSystemProxies=false -Dhttp.proxyHost= -Dhttps.proxyHost= -DsocksProxyHost= -Dhttp.nonProxyHosts=$NonProxyHosts -Dhttps.nonProxyHosts=$NonProxyHosts"

function Broadcast-EnvironmentChange {
  $code = @'
using System;
using System.Runtime.InteropServices;
public static class EnvBroadcast {
  [DllImport("user32.dll", SetLastError=true, CharSet=CharSet.Auto)]
  public static extern IntPtr SendMessageTimeout(IntPtr hWnd, uint Msg, UIntPtr wParam, string lParam, uint fuFlags, uint uTimeout, out UIntPtr lpdwResult);
}
'@
  try {
    $type = Add-Type -TypeDefinition $code -PassThru -ErrorAction Stop
    $result = [UIntPtr]::Zero
    [void]$type::SendMessageTimeout([IntPtr]0xffff, 0x001A, [UIntPtr]::Zero, 'Environment', 0x0002, 5000, [ref]$result)
  } catch {
    Write-Warning "Environment broadcast failed: $($_.Exception.Message)"
  }
}

function Show-ProxyState {
  try {
    $p = Get-ItemProperty 'HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings'
    Write-Host ''
    Write-Host 'Current Windows proxy:'
    Write-Host "  ProxyEnable   : $($p.ProxyEnable)"
    Write-Host "  ProxyServer   : $($p.ProxyServer)"
    Write-Host "  ProxyOverride : $($p.ProxyOverride)"
  } catch {
    Write-Warning "Could not read Windows proxy settings: $($_.Exception.Message)"
  }
}

if ($Undo) {
  [Environment]::SetEnvironmentVariable('_JAVA_OPTIONS', $null, 'User')
  [Environment]::SetEnvironmentVariable('JAVA_TOOL_OPTIONS', $null, 'User')
  Broadcast-EnvironmentChange
  Write-Host 'Removed user-level _JAVA_OPTIONS and JAVA_TOOL_OPTIONS.'
  Write-Host 'Please fully close and reopen UClient.'
  Show-ProxyState
  exit 0
}

# _JAVA_OPTIONS is intentionally used because it is applied after command-line -D options
# by this Java runtime, so it overrides UClient's -Djava.net.useSystemProxies=true.
[Environment]::SetEnvironmentVariable('_JAVA_OPTIONS', $JavaOptions, 'User')

# Keep JAVA_TOOL_OPTIONS in sync for tools/JREs that read it, although _JAVA_OPTIONS is
# the important one for UClient's bundled Java 8.
[Environment]::SetEnvironmentVariable('JAVA_TOOL_OPTIONS', $JavaOptions, 'User')

Broadcast-EnvironmentChange

Write-Host 'UClient Java proxy bypass has been installed for the current Windows user.'
Write-Host ''
Write-Host 'Set user environment variables:'
Write-Host "  _JAVA_OPTIONS=$JavaOptions"
Write-Host "  JAVA_TOOL_OPTIONS=$JavaOptions"
Write-Host ''
Write-Host 'Next steps:'
Write-Host '  1. Fully close UClient.'
Write-Host '  2. End all javaw.exe processes from Task Manager if any remain.'
Write-Host '  3. Reopen UClient and enter U8 Cloud / finance system again.'
Write-Host ''
Write-Host 'To undo this change:'
Write-Host '  powershell -ExecutionPolicy Bypass -File .\fix-uclient-java-proxy.ps1 -Undo'

Show-ProxyState