Link: http://www.tagwith.com/question_322855_how-to-pass-parameters-in-powershell-invoke-restmethod-post
Examples: Invoke-RestMethod -Uri http://localhost:49879/api/values -Method Post -Body @{param1=test;param2=test2}
How to pass multiple parameters in PowerShell invoke-restmethod
原文：http://www.cnblogs.com/buhaiqing/p/4650498.html