为什么直接访问静态对象失败,但是间接访问有效?请注意,加载的文件在两个示例中均有效。
直接使用静态失败
class OpPrj {
[string] $ProjectPath
static [string] $configFile = 'settings.json';
[OpPrj] static GetSettings(){
return [OpPrj](Get-Content [OpPrj]::configFile | Out-String|ConvertFrom-Json);
}
通过分配给本地工作
class OpPrj {
[string] $ProjectPath
static [string] $configFile = 'settings.json';
[OpPrj] static GetSettings(){
$file = [OpPrj]::configFile
Write-Host $file # outputs settings.json
return [OpPrj](Get-Content $file | Out-String | ConvertFrom-Json);
}
答案 0 :(得分:1)
调用Get-Content
时出现语法错误:
Get-Content [OpPrj]::configFile
PowerShell解析器无法确定结束的位置(我不确定原因),因此您需要将其显式地包装在括号中(我还建议明确地传递要传递的参数,特别是在脚本中)可读性):
Get-Content -Path ([OpPrj]::configFile)
对于枚举和静态类成员,您需要遵循此语法。
总共(不需要致电Out-String
)
class OpPrj
{
[string] $ProjectPath
static [string] $ConfigFile = 'settings.json'
static [OpPrj] GetSettings()
{
return [OpPrj](Get-Content -Path ([OpPrj]::ConfigFile) -Raw | ConvertFrom-Json)
}
}