Question

我正在编写执行以下内容的Powershell代码

读取目录中的XML文件的内容
对于目录中的每个XML文件一个。打印XML文件的选定内容（不是所有节点）湾将所选内容保存到名为$ securities

我无法做2（b）

这是我的代码：

$directory = 'C:\Scripts\Results'
[hashtable]$securities = @{}
$CUSIP=$NULL
$Int_Rate=$NULL
$Issue_Date=$NULL
$Maturity_Date=$NULL

foreach ($i in (Get-ChildItem $directory -Name)){
    write-host $i
    [xml]$xml = [xml](Get-Content $directory\$i)
    $CUSIP = $xml.AuctionData.AuctionAnnouncement.CUSIP
    Write-Host CUSIP $CUSIP 
    $Int_Rate = $xml.AuctionData.AuctionResults.InterestRate
    Write-Host Interest Rate $Int_Rate 
    $Issue_Date = $xml.AuctionData.AuctionAnnouncement.IssueDate
    Write-Host Issue Date $Issue_Date 
    $Maturity_Date = $xml.AuctionData.AuctionAnnouncement.MaturityDate
    Write-Host Maturity Date $Maturity_Date 
    Write-Host `n
    $securities.add=($i,$CUSIP,$Int_Rate,$Issue_Date,$Maturity_Date)

}

$securities

这是我对美元证券的输出

名称值
---- -----
CUSIP {Jul_2012.xml，912828TE0,0.125,2012-07-31 ...}

这不是我想要的价值。我正在寻找的价值就像是

Jan_2011.xml CUSIP 912828PP9 利率1.125 发行日期2011-01-31 到期日2021-01-15

Jan_2012.xml CUSIP 912828SA9 利率0.125 发行日期2012-01-31 到期日2022-01-15

Jul_2010.xml CUSIP 912828NM8 利率1.250 发行日期2010-07-15 到期日2020-07-15

Jul_2011.xml CUSIP 912828QV5 利率0.625 发行日期2011-07-29 到期日2021-07-15

Jul_2012.xml CUSIP 912828TE0 利率0.125 发行日期2012-07-31 到期日2022-07-15

请指出正确的方向。

修改

嗨大卫

我试过

 $securities.add($i, [pscustomobject]@{'CUSIP'=$CUSIP;'Int_Rate'=$Int_Rate;'Issue_Date'=$Issue_Date;'Maturity_Date'=$Maturity_Date})

并为$ securities获得以下输出

Name Value                                                                                                 
----                           -----                                                                                                 
Jul_2012.xml                   @{CUSIP=912828TE0; Int_Rate=0.125; Issue_Date=2012-07-31; Maturity_Date=2022-07-15}                   
Jul_2011.xml                   @{CUSIP=912828QV5; Int_Rate=0.625; Issue_Date=2011-07-29; Maturity_Date=2021-07-15}                   
Jul_2010.xml                   @{CUSIP=912828NM8; Int_Rate=1.250; Issue_Date=2010-07-15; Maturity_Date=2020-07-15}                   
Jan_2012.xml                   @{CUSIP=912828SA9; Int_Rate=0.125; Issue_Date=2012-01-31; Maturity_Date=2022-01-15}                   
Jan_2011.xml                   @{CUSIP=912828PP9; Int_Rate=1.125; Issue_Date=2011-01-31; Maturity_Date=2021-01-15}

但我不知道如何引用它。

例如，当我试图获得

$securities.Jul_2012.xml('CUSIP')

我收到错误：

You cannot call a method on a null-valued expression.
At C:\Scripts\treasury_holdings.ps1:24 char:1
+ $securities.Jul_2012.xml('CUSIP')
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

而不是

912828TE0

编辑：

谢谢大卫。

为了帮助他人，这是最新的代码：

$directory = 'C:\Scripts\Results'
[hashtable]$securities = @{}
$CUSIP=$NULL
$Int_Rate=$NULL
$Issue_Date=$NULL
$Maturity_Date=$NULL

foreach ($i in (Get-ChildItem $directory -Name)){
    write-host $i
    [xml]$xml = [xml](Get-Content $directory\$i)
    $CUSIP = $xml.AuctionData.AuctionAnnouncement.CUSIP        
    $Int_Rate = $xml.AuctionData.AuctionResults.InterestRate     
    $Issue_Date = $xml.AuctionData.AuctionAnnouncement.IssueDate    
    $Maturity_Date = $xml.AuctionData.AuctionAnnouncement.MaturityDate            
    $securities.add($i, [pscustomobject]@{'CUSIP'=$CUSIP;'Int_Rate'=$Int_Rate;'Issue_Date'=$Issue_Date;'Maturity_Date'=$Maturity_Date})
    Write-Host CUSIP $securities[$i].CUSIP
    Write-Host Interest Rate $securities[$i].Int_Rate
    Write-Host Issue Date $securities[$i].Issue_Date
    Write-Host Maturity Date $securities[$i].Maturity_Date
    Write-Host `n
}

Answer 1

问题在于您正在调用以下内容：

$securities.add=($i,$CUSIP,$Int_Rate,$Issue_Date,$Maturity_Date)

问题在于那里的等号。实际上做的是插入一个带有“add”键的记录，其余的值作为值。你真正想要的是用密钥$ i和其他所有东西的值添加记录。尝试创建其余值的[pscustomobject]，并将它们添加到哈希表中，如下所示：

$securities.add($i, [pscustomobject]@{'CUSIP'=$CUSIP;'Int Rate'=$Int_Rate;'Issue Date'=$Issue_Date';'Maturity Date'=$Maturity_Date})

编辑：尝试执行以下任一操作：

($securities.Jul_2012.xml).CUSIP

或

$securities['Jul_2012.xml'].CUSIP

使用Powershell动态读取选择的XML内容到Hashtable

1 个答案: