(Tcl) HTTP POST JSON and Parse JSON Response

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

Chilkat Tcl Extension Downloads Chilkat Tcl Extension Downloads

load ./chilkat.dll

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

set json [new_CkJsonObject]

set success [CkJsonObject_LoadFile $json "qa_data/json/jsonBodyForHttpPost.json"]
if {$success != 1} then {
    puts [CkJsonObject_lastErrorText $json]
    delete_CkJsonObject $json
    exit
}

set http [new_CkHttp]

# resp is a CkHttpResponse
set resp [CkHttp_PostJson2 $http "https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums" "application/json" [CkJsonObject_emit $json]]
if {[CkHttp_get_LastMethodSuccess $http] != 1} then {
    puts [CkHttp_lastErrorText $http]
    delete_CkJsonObject $json
    delete_CkHttp $http
    exit
}

set jsonResp [new_CkJsonObject]

CkJsonObject_Load $jsonResp [CkHttpResponse_bodyStr $resp]

CkJsonObject_put_EmitCompact $jsonResp 0
puts [CkJsonObject_emit $jsonResp]

# 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.  
set lifeAmount [CkJsonObject_stringOf $jsonResp "LifeAmount"]
set lifeResidualAmount [CkJsonObject_stringOf $jsonResp "LifeResidualAmount"]

puts "LifeAmount = $lifeAmount"
puts "LifeResidualAmount = $lifeResidualAmount"

delete_CkJsonObject $json
delete_CkHttp $http
delete_CkJsonObject $jsonResp