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(Excel) HTTP POST JSON and Parse JSON Response

Demonstrates how to send a JSON POST and then parse the JSON response.

Download Excel Class Modules

Chilkat Excel Class Modules

Dim json As Chilkat.JsonObject
Set json = Chilkat.NewJsonObject

Dim success As Boolean
success = json.LoadFile("qa_data/json/jsonBodyForHttpPost.json")
If (success <> True) Then
    Debug.Print json.LastErrorText
    Exit Sub
End If

Dim http As Chilkat.Http
Set http = Chilkat.NewHttp
success = http.UnlockComponent("Anything for 30-day trial.")
If (success <> True) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim resp As Chilkat.HttpResponse
Set resp = http.PostJson2("https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums","application/json",json.Emit())
If (http.LastMethodSuccess <> True) Then
    Debug.Print http.LastErrorText
    Exit Sub
End If

Dim jsonResp As Chilkat.JsonObject
Set jsonResp = Chilkat.NewJsonObject
success = jsonResp.Load(resp.BodyStr)

jsonResp.EmitCompact = False
Debug.Print jsonResp.Emit()

'  The JSON response to be parsed looks like this:
'  {
'   "LifeAmount": 513.85,
'    "LifeResidualAmount": 123.38,
'    "CriticalIllnessAmount": 0,
'    "CriticalIllnessResidualAmount": 0,
'    "DisabilityAmount": 881.70,
'    "PolicyFee": 0.00,
'    "PolicyFeeSecondary": 0,
'    "PolicyFeeHidden": 50.00,
'    "PolicyFeeHiddenSecondary": 0
'  }

'  We can get the floating point numbers as strings.  Then convert to double
'  using the appropriate string-to-double conversion for your programming language.
'  For example, in C++ use atof.  In C# use Convert.ToDouble.
Dim lifeAmount As String
lifeAmount = jsonResp.StringOf("LifeAmount")
Dim lifeResidualAmount As String
lifeResidualAmount = jsonResp.StringOf("LifeResidualAmount")

Debug.Print "LifeAmount = "; lifeAmount
Debug.Print "LifeResidualAmount = "; lifeResidualAmount

 

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