101 lines
3.6 KiB
PowerShell
101 lines
3.6 KiB
PowerShell
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# 小程序图片压缩脚本
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# 使用 .NET 的 System.Drawing 压缩图片
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Add-Type -AssemblyName System.Drawing
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function Compress-Image {
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param(
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[string]$InputPath,
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[int]$Quality = 50
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)
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try {
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# 加载图片
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$image = [System.Drawing.Image]::FromFile($InputPath)
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# 创建临时文件
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$tempPath = $InputPath + ".tmp"
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# 设置JPEG编码器参数
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$encoder = [System.Drawing.Imaging.ImageCodecInfo]::GetImageEncoders() | Where-Object { $_.MimeType -eq 'image/jpeg' }
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$encoderParams = New-Object System.Drawing.Imaging.EncoderParameters(1)
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$encoderParams.Param[0] = New-Object System.Drawing.Imaging.EncoderParameter([System.Drawing.Imaging.Encoder]::Quality, $Quality)
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# 获取原始大小
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$originalSize = (Get-Item $InputPath).Length / 1KB
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# 保存压缩后的图片
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$image.Save($tempPath, $encoder, $encoderParams)
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$image.Dispose()
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# 获取压缩后大小
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$compressedSize = (Get-Item $tempPath).Length / 1KB
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# 替换原文件
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Remove-Item $InputPath -Force
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Rename-Item $tempPath $InputPath
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$saved = $originalSize - $compressedSize
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$percent = [math]::Round(($saved / $originalSize) * 100, 1)
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Write-Host "✓ $([System.IO.Path]::GetFileName($InputPath)): $([math]::Round($originalSize, 1))KB -> $([math]::Round($compressedSize, 1))KB (减少 $percent%)" -ForegroundColor Green
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return $true
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}
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catch {
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Write-Host "✗ 压缩失败 $InputPath : $_" -ForegroundColor Red
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return $false
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}
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}
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# 主程序
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Write-Host "========================================" -ForegroundColor Cyan
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Write-Host "开始压缩小程序图片..." -ForegroundColor Cyan
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Write-Host "========================================" -ForegroundColor Cyan
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Write-Host ""
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$staticDir = "peidu\uniapp\src\static"
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$totalOriginal = 0
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$totalCompressed = 0
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$successCount = 0
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# 压缩 banner 目录
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Write-Host "处理目录: banner/" -ForegroundColor Yellow
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Write-Host "----------------------------------------"
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Get-ChildItem "$staticDir\banner\*.jpg" | ForEach-Object {
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$originalSize = $_.Length / 1KB
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$totalOriginal += $originalSize
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if (Compress-Image -InputPath $_.FullName -Quality 50) {
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$compressedSize = (Get-Item $_.FullName).Length / 1KB
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$totalCompressed += $compressedSize
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$successCount++
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}
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}
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Write-Host ""
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# 压缩 button 目录
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Write-Host "处理目录: button/" -ForegroundColor Yellow
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Write-Host "----------------------------------------"
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Get-ChildItem "$staticDir\button\*.jpg" | ForEach-Object {
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$originalSize = $_.Length / 1KB
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$totalOriginal += $originalSize
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if (Compress-Image -InputPath $_.FullName -Quality 50) {
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$compressedSize = (Get-Item $_.FullName).Length / 1KB
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$totalCompressed += $compressedSize
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$successCount++
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}
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}
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Write-Host ""
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Write-Host "========================================" -ForegroundColor Cyan
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Write-Host "压缩完成！" -ForegroundColor Green
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Write-Host "========================================" -ForegroundColor Cyan
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Write-Host "成功压缩: $successCount 个文件"
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Write-Host "原始总大小: $([math]::Round($totalOriginal, 1))KB"
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Write-Host "压缩后总大小: $([math]::Round($totalCompressed, 1))KB"
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Write-Host "节省空间: $([math]::Round($totalOriginal - $totalCompressed, 1))KB ($([math]::Round((($totalOriginal - $totalCompressed) / $totalOriginal) * 100, 1))%)"
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Write-Host "========================================" -ForegroundColor Cyan
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