Visual FoxPro
Visual FoxPro
Generate an E-way Bill
See more HTTP Misc Examples
Demonstrates how to send an HTTP POST request to generate an e-way bill.Chilkat Visual FoxPro Downloads
LOCAL lnSuccess
LOCAL loJsonAuth
LOCAL loJsonData
LOCAL loJsonRequestBody
LOCAL loCrypt
LOCAL loHttp
LOCAL loResp
LOCAL lnRespStatusCode
LOCAL loJson
LOCAL lnStatus
LOCAL loSbError
LOCAL loBdData
LOCAL loJsonBill
LOCAL lnEwayBillNo
LOCAL lcEwayBillDate
LOCAL lcValidUpto
lnSuccess = 0
* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.
* This example uses the previously obtained access token that was retrieved
* in this example: Get EWAY Auth Token using Gstin, username, password, and app_key
loJsonAuth = CreateObject('Chilkat.JsonObject')
lnSuccess = loJsonAuth.LoadFile("qa_data/tokens/ewayAuth.json")
IF (lnSuccess = 0) THEN
? loJsonAuth.LastErrorText
RELEASE loJsonAuth
CANCEL
ENDIF
* The jsonAuth contains something like this:
* {
* "authToken": "IBTeFtxNfVurg71LTzZ2r0xK7",
* "decryptedSek": "5g1TyTie7yoslU3DrbYATa7mWyPazlODE7cEh5Vy4Ho="
* }
* Generate the JSON data for the e-way bill.
* The following code can be generated by pasting representative JSON into this online tool:
* Generate JSON Code
loJsonData = CreateObject('Chilkat.JsonObject')
loJsonData.UpdateString("supplyType","O")
loJsonData.UpdateString("subSupplyType","1")
loJsonData.UpdateString("docType","INV")
loJsonData.UpdateString("docNo","AW1234-2")
loJsonData.UpdateString("docDate","05/04/2018")
loJsonData.UpdateString("fromGstin","09ABDC24212B1FK")
loJsonData.UpdateString("fromTrdName","willy")
loJsonData.UpdateString("fromAddr1","3RD CROSS NO 200 19 A")
loJsonData.UpdateString("fromAddr2","GROUND FLOOR OZZY ROAD")
loJsonData.UpdateString("fromPlace","BUSY TOWN")
loJsonData.UpdateNumber("fromPincode","640033")
loJsonData.UpdateNumber("actFromStateCode","05")
loJsonData.UpdateNumber("fromStateCode","05")
loJsonData.UpdateString("toGstin","01AAAASCC10BBBB")
loJsonData.UpdateString("toTrdName","mthustra")
loJsonData.UpdateString("toAddr1","Shrek Ogre")
loJsonData.UpdateString("toAddr2","Basadronsil")
loJsonData.UpdateString("toPlace","Grifl Blagar")
loJsonData.UpdateNumber("toPincode","699988")
loJsonData.UpdateNumber("actToStateCode","29")
loJsonData.UpdateNumber("toStateCode","02")
loJsonData.UpdateNumber("totalValue","5609889")
loJsonData.UpdateNumber("cgstValue","0")
loJsonData.UpdateNumber("sgstValue","0")
loJsonData.UpdateNumber("igstValue","168296.67")
loJsonData.UpdateNumber("cessValue","224395.56")
loJsonData.UpdateString("transporterId","09ABDC24212B1FK")
loJsonData.UpdateString("transporterName","")
loJsonData.UpdateString("transDocNo","12332")
loJsonData.UpdateNumber("transMode","1")
loJsonData.UpdateString("transDistance","656")
loJsonData.UpdateString("transDocDate","10/04/2018")
loJsonData.UpdateString("vehicleNo","PBN4567")
loJsonData.UpdateString("vehicleType","R")
loJsonData.I = 0
loJsonData.UpdateString("itemList[i].productName","Wheat")
loJsonData.UpdateString("itemList[i].productDesc","Wheat")
loJsonData.UpdateNumber("itemList[i].hsnCode","1001")
loJsonData.UpdateNumber("itemList[i].quantity","4")
loJsonData.UpdateString("itemList[i].qtyUnit","BOX")
loJsonData.UpdateNumber("itemList[i].cgstRate","0")
loJsonData.UpdateNumber("itemList[i].sgstRate","0")
loJsonData.UpdateNumber("itemList[i].igstRate","3")
loJsonData.UpdateNumber("itemList[i].cessRate","4")
loJsonData.UpdateNumber("itemList[i].cessAdvol","0")
loJsonData.UpdateNumber("itemList[i].taxableAmount","5609889")
* The body of the HTTP POST will contain JSON that looks like this:
* {
* "action":"GENEWAYBILL",
* "data": " iJiJGXq ... oUZp/25Y "
* }
* The "data" is the encrypted jsonData using our previously agreed-upon symmetric encryption key.
* Let's begin build the JSON request body..
loJsonRequestBody = CreateObject('Chilkat.JsonObject')
loJsonRequestBody.UpdateString("action","GENEWAYBILL")
* Setup the encryptor using the decryptedSek from the jsonAuth
loCrypt = CreateObject('Chilkat.Crypt2')
loCrypt.CryptAlgorithm = "aes"
loCrypt.CipherMode = "ecb"
loCrypt.KeyLength = 256
loCrypt.SetEncodedKey(loJsonAuth.StringOf("decryptedSek"),"base64")
loCrypt.EncodingMode = "base64"
* Encrypt the jsonData and add it to our JSON request body
loJsonRequestBody.UpdateString("data",loCrypt.EncryptStringENC(loJsonData.Emit()))
loHttp = CreateObject('Chilkat.Http')
* Add the authtoken to the request header.
* Be careful to be precise with uppercase/lowercase ("authtoken" vs "authToken")
loHttp.SetRequestHeader("authtoken",loJsonAuth.StringOf("authToken"))
loHttp.SetRequestHeader("Gstin","09ABDC24212B1FK")
loHttp.Accept = "application/json"
* POST the request to generate an e-way bill:
loResp = CreateObject('Chilkat.HttpResponse')
lnSuccess = loHttp.HttpJson("POST","http://ewb.wepgst.com/api/EWayBill",loJsonRequestBody,"application/json",loResp)
IF (lnSuccess = 0) THEN
? loHttp.LastErrorText
RELEASE loJsonAuth
RELEASE loJsonData
RELEASE loJsonRequestBody
RELEASE loCrypt
RELEASE loHttp
RELEASE loResp
CANCEL
ENDIF
lnRespStatusCode = loResp.StatusCode
? "response status code =" + STR(lnRespStatusCode)
? "response body:"
? loResp.BodyStr
IF (lnRespStatusCode <> 200) THEN
? "Failed in some unknown way."
RELEASE loJsonAuth
RELEASE loJsonData
RELEASE loJsonRequestBody
RELEASE loCrypt
RELEASE loHttp
RELEASE loResp
CANCEL
ENDIF
* When the response status code = 200, we'll have either
* success response like this:
* {"status":"1","data":"..."}
*
* or a failed response like this:
*
* {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
* Load the response body into a JSON object.
loJson = CreateObject('Chilkat.JsonObject')
loJson.Load(loResp.BodyStr)
lnStatus = loJson.IntOf("status")
? "status = " + STR(lnStatus)
IF (lnStatus <> 1) THEN
* Failed. Base64 decode the error
* {"status":"0","error":"eyJlcnJvckNvZGVzIjoiMTA4In0="}
* For an invalid password, the error is: {"errorCodes":"108"}
loSbError = CreateObject('Chilkat.StringBuilder')
loJson.StringOfSb("error",loSbError)
loSbError.Decode("base64","utf-8")
? "error: " + loSbError.GetAsString()
RELEASE loJsonAuth
RELEASE loJsonData
RELEASE loJsonRequestBody
RELEASE loCrypt
RELEASE loHttp
RELEASE loResp
RELEASE loJson
RELEASE loSbError
CANCEL
ENDIF
loJson.EmitCompact = 0
? "JSON response:"
? loJson.Emit()
loBdData = CreateObject('Chilkat.BinData')
loBdData.AppendEncoded(loJson.StringOf("data"),"base64")
loCrypt.DecryptBd(loBdData)
* Decrypts to
* {"ewayBillNo":331001121234,"ewayBillDate":"24/05/2018 04:38:00 PM","validUpto":"31/05/2018 11:59:00 PM"}
loJsonBill = CreateObject('Chilkat.JsonObject')
loJsonBill.Load(loBdData.GetString("utf-8"))
lnEwayBillNo = loJsonBill.IntOf("ewayBillNo")
? "ewayBillNo = " + STR(lnEwayBillNo)
lcEwayBillDate = loJsonBill.StringOf("ewayBillDate")
? "ewayBillDate = " + lcEwayBillDate
lcValidUpto = loJsonBill.StringOf("validUpto")
? "validUpto = " + lcValidUpto
* Sample output:
* ewayBillNo = 331001121234
* ewayBillDate = 24/05/2018 04:55:00 PM
* validUpto = 31/05/2018 11:59:00 PM
RELEASE loJsonAuth
RELEASE loJsonData
RELEASE loJsonRequestBody
RELEASE loCrypt
RELEASE loHttp
RELEASE loResp
RELEASE loJson
RELEASE loSbError
RELEASE loBdData
RELEASE loJsonBill