Question

我有一个以＆＃34; .EXCEL＆＃34;文件（假excel，但这超出了我们的控制范围）。它实际上是HTML，但我很难将其转换为XML。

HTML看起来像这样：

<table class="c41">
    <tr class="c5">
        <td valign="top" class="c6"><p class="c7"><span class="c8">Cash Activity </span> 
        </p>
        </td>
        <td valign="top" class="c9"><p class="c10"><br/><span class="c2">FRIDAY&nbsp;&nbsp; </span><br/><span class="c2"> </span></p>
        </td>
    </tr>
    <tr class="c5">
        <td valign="top" class="c6"><p class="c11"><br/></p>
        </td>
        <td valign="top" class="c9"><p class="c10"><br/><span class="c2">05-JAN-18</span><br/><span class="c2"> </span></p>
        </td>
    </tr>
    <tr class="c12">
        <td valign="top" class="c13"><p class="c7"><span class="c14">Prior Day Available Balance</span></p>
        </td>
        <td valign="top" class="c15"><p class="c10"><span class="c16">6,472,679.45 
        </span></p>
        </td>
    </tr>
</table>

看起来像这样：

Cash Activity               | Friday 05-JAN-18
______________________________________________
Prior Day Available Balance | $123,456.58

无论如何，我可以在Powershell中将其解析为输出XML，如下所示：

<?xml version="1.0" encoding="utf-8" ?>
<Cash Activities>
    <Cash Activity>
        <Activity>Prior Day Available Balance</Activity>
        <Balance>123456.58</Balance>
    </Cash Activity>
</Cash Activities>

到目前为止，Powershell只是将其从电子邮件中删除，并将其保存为HTML文件：

$account = "my.email@mycompany.com"
#date to append to new file name
$date = Get-Date -Format yyyyMMdd
$searchDate = Get-Date -Format M/dd/yyyy
Write-Host $searchDate
#file to save attachment as
$newFileName = "Balance_Import_$date.xml"
$newFilePath = "C:\MyDirectory\\"

#Go into Outlook and get the MAPI
$mail = New-Object -ComObject outlook.application
$mailNS = $mail.GetNamespace("MAPI")


#get the account and Inbox we want
$myAcount = $mailNS.Folders | ? {$_.Name -eq $account}
$myInbox = $myAcount.Folders | ? {$_.Name -eq "Inbox"};
$myItems = $myAcount.Items | ? {$_.ReceivedTime.Date -eq $searchDate};

#loop through the Inbox and get any Attachments with the extension of .EXCEL
foreach ($f in $myInbox)
{
    foreach($i in $f.Items)
    {
        Write-Host "Checking "$i.Subject"..."

        if($i.ReceivedTime.Date -eq $searchDate)
        {
            Write-Host "---"
            Write-Host $i.Subject
            Write-Host "---"

            foreach($a in $i.Attachments)
            {
                if($a.FileName -like "*.EXCEL")
                {
                    #Move the attachment to the desired directory
                    $a.SaveAsFile((Join-Path $newFilePath $newFileName))
                    Write-Host $a.FileName " Saved as HTML"

                    #TODO: PARSE HTML INTO XML

                }
            }
        }

    }
}

Answer 1

解析伪造的Excel / HTML输入可能存在一些问题：

HTML格式不正确。
像[{1}}这样的HTML实体会破坏XML解析器。

假设您上面的HTML示例处理了第一个问题，您可以通过解码输入来强制解决第二个问题，如下所示：

&nbsp;

现在只需要一些简单的XPath来选择你想要获得上面指定的所需XML的节点（测试和工作）：

[xml]$html = [System.Net.WebUtility]::HtmlDecode(@'
<table class="c41">
    <tr class="c5">
        <td valign="top" class="c6"><p class="c7"><span class="c8">Cash Activity </span> 
        </p>
        </td>
        <td valign="top" class="c9"><p class="c10"><br/><span class="c2">FRIDAY&nbsp;&nbsp; </span><br/><span class="c2"> </span></p>
        </td>
    </tr>
    <tr class="c5">
        <td valign="top" class="c6"><p class="c11"><br/></p>
        </td>
        <td valign="top" class="c9"><p class="c10"><br/><span class="c2">05-JAN-18</span><br/><span class="c2"> </span></p>
        </td>
    </tr>
    <tr class="c12">
        <td valign="top" class="c13"><p class="c7"><span class="c14">Prior Day Available Balance</span></p>
        </td>
        <td valign="top" class="c15"><p class="c10"><span class="c16">6,472,679.45 
        </span></p>
        </td>
    </tr>
</table>
'@);

Answer 2

由于存在ConvertTo-XML这样的问题，您的问题应该是＆＃34;如何将HTML表转换为Powershell对象＆＃34;。

对于您不了解元素的表格，您可以使用正则表达式，即使它是不好的做法。 https://social.technet.microsoft.com/Forums/scriptcenter/en-US/4fc6d20c-87bd-44e4-8e46-c72d63fe7b41/html-table-to-powershell-object?forum=ITCG

将数据导入Powershell对象后，可以非常轻松地更改标题，或者根据需要清理数据。

然后使用上述cmdlet转换为XML。

Answer 3

您可以使用Internet Explorer COM对象获取HTML结构，然后提取所需的数据，最后生成XML。这是一个展示如何执行此操作的示例：

# Create the IE com object
$oIE = New-Object -COM InternetExplorer.application

# Load the HTML document
$oie.Navigate("$pwd/html.htm")

# Function to convert the html COM object graph into PSCustomObjects
# This makes the tree a bit easier to work with since you can access by node name
function Export-Html  ($html)
{
    [pscustomobject] @{
        $html.NodeName = @{
            children = $html.Children | foreach { Export-Html $_ }
            text = $html.InnerText
        }
    }
}

# Convert the HTML into a PSCustomObject graph
$obj = Export-Html $oie.Document.Body

# Get the activity string explicitly walking the document hierarchy (could use tree search instead...)
$activity = $obj.BODY.children.
              Table.Children.
                Tbody.children.
                  TR[2].Children[0].
                   TD.
                     Text

# Get the balance, cast to double to get rid of the commas in the HTML text
[double] $balance = $obj.BODY.children.
                      Table.Children.
                        Tbody.children.
                          TR[2].Children[1].
                            TD.
                              Text

# Finally emit the XML with activity and balance substituted
@"
<?xml version="1.0" encoding="utf-8" ?>
<Cash Activities>
    <Cash Activity>
        <Activity>$activity</Activity>
        <Balance>$balance</Balance>
    </Cash Activity>
</Cash Activities>
"@

将HTML解析为Clean XML

3 个答案: