1.定义JSON字符串变量

PS C:\WINDOWS\system32>  $body = @'{"Method":  "POST","Body":  {"model":  "deepseek-r1","messages":  [{"content":  "why is the sky blue?","role":  "user"}]},"Uri":  "http://localhost:11434/api/generate"
}
'@PS C:\WINDOWS\system32> $body{"Method":  "POST","Body":  {"model":  "deepseek-r1","messages":  [{"content":  "why is the sky blue?","role":  "user"}]},"Uri":  "http://localhost:11434/api/generate"
}  

2. 将 JSON 字符串转换为 PowerShell 对象

PS C:\WINDOWS\system32> $bodyObj = $body | ConvertFrom-JsonPS C:\WINDOWS\system32> $bodyObj.Bodymodel       messages                                    
-----       --------                                    
deepseek-r1 {@{content=why is the sky blue?; role=user}}PS C:\WINDOWS\system32> $bodyObj.Body.messagescontent              role
-------              ----

3.从 PowerShell 对象生成 JSON 字符串

PS C:\WINDOWS\system32> $bodyObj = @{Uri             = 'http://localhost:11434/api/generate'   Method          = 'POST'Body            = @{model = "deepseek-r1"messages = @(@{ role = "user"content="why is the sky blue?" })}
}PS C:\WINDOWS\system32> $bodyObj | ConvertTo-Json -Depth 5
{"Method":  "POST","Body":  {"model":  "deepseek-r1","messages":  [{"content":  "why is the sky blue?","role":  "user"}]},"Uri":  "http://localhost:11434/api/generate"
}

4. Invoke-WebRequest的body参数支持中文

PS C:\Users\houyingshi> $body = @'                                              {"model": "deepseek-r1","prompt": "天空为什么是蓝色的","stream": false
}
'@PS C:\Users\houyingshi> (Invoke-WebRequest -method POST -Body $body  -ContentType "application/json; charset=utf-8"   -uri http://localhost:11434/api/generate ).Content | ConvertFrom-json