Question

您好我正在尝试更改web.config文件的连接字符串的值，但收到错误：

在此对象上找不到属性'connectionString'。验证该属性是否存在且可以设置。

这是我使用的脚本：

$webConfig = 'C:\Users\test\Desktop\web\web.config'
$doc = (Get-Content $webConfig) -as [Xml]
$obj = $doc.configuration.appSettings.add | where {$_.Key -eq 'CommandTimeOut'}
$obj.value = '60'
$config = [xml](gc $webConfig)  
$con= $config.configuration.connectionStrings.add|where-object{$_.name -eq "password"};

$con.connectionString = $con.connectionString -replace "123456", "admin1234"

$doc.Save($webConfig)

我已经修改了下面的代码，但它仍然无法正常工作，我收到了同样的错误。

$cfg = [xml](gc $webConfig) 
$con= $cfg.configuration.connectionStrings.add|where-object{$_.name -eq "password"};
$cfg.configuration.connectionStrings.add.connectionString=   
$cfg.configuration.connectionStrings.add.connectionString -replace "123456","admin123"
$doc.Save($webConfig)

Answer 1

迟到了，但万一有人可能会找到它的用途，我已经写了一个可重复使用的Power-Shell。

    #set the value of this to your own db config
$myConnectionString = "Data Source=.;Initial Catalog=<Database>;Integrated Security=True";

$webConfig = '.\Api\Web.config'
$dbUpConfig = '.\Database\App.config'
$unitTestConfig = '.\Test\App.config'

Function updateConfig($config) 
{ 
$doc = (Get-Content $config) -as [Xml]
$root = $doc.get_DocumentElement();
$activeConnection = $root.connectionStrings.SelectNodes("add");
$activeConnection.SetAttribute("connectionString", $myConnectionString);
$doc.Save($config)
} 

updateConfig($webConfig)
updateConfig($dbUpConfig)
updateConfig($unitTestConfig)

Answer 2

这是一个循序渐进的例子：

[xml]$x='<connectionStrings>
<add name="membership" connectionString="Data Source=server1;Initial Catalog=inventory;MultipleActiveResultSets=true;user id=inventoryWebUser;password=123456" providerName="System.Data.SqlClient" />
<add name="test" connectionString="Data Source=server1;Initial Catalog=inventory;MultipleActiveResultSets=true;user id=inventoryWebUser;password=123456" providerName="System.Data.SqlClient" />
</connectionStrings>'

$mycon=$x.connectionStrings.add |?{$_.name -eq "membership"}
$mycon.connectionString=$mycon.connectionstring -replace "password=123456","password=admin123"
$x.save("c:\temp\newconf.xml")
gc c:\temp\newconf.xml

Answer 3

一种肮脏的方法可能是在不解析xml的情况下替换文本，就像这样（如果没有定义先前的连接字符串）：

$replacementstring=@"
<connectionStrings>
  <add 
    name="NorthwindConnectionString" 
    connectionString="Data Source=serverName;Initial 
    Catalog=Northwind;Persist Security Info=True;User 
    ID=userName;Password=password"
    providerName="System.Data.SqlClient"
  />
</connectionStrings>
"@

(gc c:\temp\web.config) -replace "<connectionStrings/>" ,$repl  | out-file c:\temp\new_web.config

如何使用powershell更改web.config文件的值

3 个答案: