如何格式化多行字符串？

Question

我正在尝试在 powershell 中格式化多行字符串。

$json =
@'
{
    "updateDetails": [{
            "datasourceSelector": {
                "datasourceType": "AnalysisServices",
                "connectionDetails": {
                    "server": "{0}"
                }
            }
        }
    ]
}
'@
$json = [string]::Format($json, $name)

最后一行报错

Exception calling "Format" with "2" argument(s): "Input string was not in a correct format."

我也试过符号 '@ -f $name 但出现此错误。

Error formatting a string: Input string was not in a correct format

我也试过像这样转义字符串中的引号，但得到同样的错误

`"{0}`"

如何设置多行字符串的格式？

Answer 1

C# Tips and Tricks #7 – Escaping ‘{‘ in C# String.Format

$json =
@'
{{
    "updateDetails": [{{
            "datasourceSelector": {{
                "datasourceType": "AnalysisServices",
                "connectionDetails": {{
                    "server": "{0}"
                }}
            }}
        }}
    ]
}}
'@
[string]::Format($json, $name)

Answer 2

一种方法是使用 -replace 而不是格式：

$name = 'MyServer'
$json = @'
{
    "updateDetails": [{
            "datasourceSelector": {
                "datasourceType": "AnalysisServices",
                "connectionDetails": {
                    "server": "{0}"
                }
            }
        }
    ]
}
'@
$json -replace '\{0}', $name  # the opening curly bracket needs to be escaped

或者在此处的字符串上使用双引号并直接将变量$name放入其中：

$name = 'MyServer'
$json = @"
{
    "updateDetails": [{
            "datasourceSelector": {
                "datasourceType": "AnalysisServices",
                "connectionDetails": {
                    "server": "$name"
                }
            }
        }
    ]
}
"@

如何格式化多行字符串？

How to format a multiline string?

powershell

powershell-4.0