Swift

HTTP POST JSON and Parse JSON Response

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

func chilkatTest() {
    var success: Bool = false

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

    let json = CkoJsonObject()!

    success = json.loadFile(path: "qa_data/json/jsonBodyForHttpPost.json")
    if success == false {
        print("\(json.lastErrorText!)")
        return
    }

    let http = CkoHttp()!

    let resp = CkoHttpResponse()!
    success = http.httpJson(verb: "POST", url: "https://test.something.com/XYZ/API/v1/CreditInsuranceCalculator/CalculatePremiums", json: json, contentType: "application/json", response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    let jsonResp = CkoJsonObject()!
    jsonResp.load(json: resp.bodyStr)

    jsonResp.emitCompact = false
    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.  
    var lifeAmount: String? = jsonResp.string(of: "LifeAmount")
    var lifeResidualAmount: String? = jsonResp.string(of: "LifeResidualAmount")

    print("LifeAmount = \(lifeAmount!)")
    print("LifeResidualAmount = \(lifeResidualAmount!)")

}