尝试确定如何在Azure CLI“rest”子命令的文本文件中捕获rest有效负载。
这是可行的：

az rest --method get --uri "https://prices.azure.com/api/retail/prices?$filter=serviceName eq 'Virtual Machines' and armRegionName eq 'westindia'"

但如果我将其保存在文本文件中，过滤器就不起作用了：

C:\Users\foo> type query.txt
$filter=serviceName eq 'Virtual Machines' and armRegionName eq 'westindia'
C:\Users\foo> az rest --verbose --method get --uri "https://prices.azure.com/api/retail/prices" --body @query.txt --headers Content-Type=text/plain
Can't derive appropriate Azure AD resource from --url to acquire an access token. If access token is required, use --resource to specify the resource
Request URL: 'https://prices.azure.com/api/retail/prices'
Request method: 'GET'
Request headers:
    'User-Agent': 'python/3.10.5 (Windows-10-10.0.22000-SP0) AZURECLI/2.38.0 (MSI)'
    'Accept-Encoding': 'gzip, deflate'
    'Accept': '*/*'
    'Connection': 'keep-alive'
    'Content-Type': 'text/plain'
    'x-ms-client-request-id': '<immaterial>'
    'CommandName': 'rest'
    'ParameterSetName': '--verbose --method --uri --body --headers'
    'Content-Length': '74'
Request body:
$filter=serviceName eq 'Virtual Machines' and armRegionName eq 'westindia'
Response status: 200
Response headers:
    'Content-Length': '10821'
    'Content-Type': 'application/json; charset=utf-8'
    'Date': 'Tue, 02 Aug 2022 11:24:55 GMT'
    'Server': 'Microsoft-IIS/10.0'
    'Cache-Control': 'no-cache'
    'Content-Encoding': 'gzip'
    'Expires': '-1'
    'Pragma': 'no-cache'
    'Set-Cookie': 'ARRAffinity=<immaterial>;Path=/;HttpOnly;Secure;Domain=prices.azure.com, ARRAffinitySameSite=<immaterial>;Path=/;HttpOnly;SameSite=None;Secure;Domain=prices.azure.com'
    'Vary': 'Accept-Encoding'
    'X-AspNet-Version': '4.0.30319'
    'X-Powered-By': 'ASP.NET'
Response content:
{"BillingCurrency":"USD","CustomerEntityId":"Default","CustomerEntityType":"Retail","Items":[{"currencyCode":"USD","tierMinimumUnits":0.0,"retailPrice":0.1955,"unitPrice":0.1955,"armRegionName":"southindia", ...

为了简洁，响应被截断了。但是注意southindia出现在响应中。很明显，过滤器不起作用。
我知道我的负载（query.txt的内容）不是URL编码的。
如何从一个文件发送一个有效的过滤器负载？
不相关，但共享完整上下文：我正在尝试构建一个匹配SKU名称的过滤器。请参阅Find cheapest spot supported size / sku via az CLI or terraform provider