代码如下，先卸载，然后删除，然后添加，然后安装。
卸载之后会重启IIS，所以等待几秒钟，直到卸载完成。
添加snapin
$snapin = Get-PSSnapin | Where-Object {$_.Name -eq 'Microsoft.SharePoint.Powershell'}
if ($snapin -eq $null)
{
Write-Host "Loading SharePoint Powershell Snapin..."
Add-PSSnapin "Microsoft.SharePoint.Powershell"
Write-Host "SharePoint Powershell Snapin Loaded"
}
部署代码
################
#Deploy Timejob#
write-host ""
write-host "--------------------------" -foregroundcolor green
write-host "Starting Install Solution!" -foregroundcolor green
$webApplication = "http://xxxx/"
$wspName= "TimeJob.wsp"
$sln = get-spsolution -identity $wspName
Uninstall-SPSolution -Identity $wspName -confirm:$false
while($sln.JobExists) {
write-host "Uninstall in progress..." -foregroundcolor yellow
start-sleep -s 5
}
Remove-SPSolution -identity $wspName -confirm:$false
write-host "Solution Removed!" -foregroundcolor green
$webpartPath="C:\Sharepoint\Deploy\WSP\" + $wspName
Add-SPSolution $webpartPath
Install-SPSolution -Identity $wspName -GACDeployment
write-host "Solution" $wspName "Installation Completed!" -foregroundcolor green
write-host "--------------------------" -foregroundcolor green