Xbase++

Simple REST Example

See more REST Examples

Demonstrates a very simple RESTful API call to get a stock time series daily (quotes) from Alpha Vantage. Xbase++

LOCAL nSuccess
LOCAL oRest
LOCAL nBTls
LOCAL nPort
LOCAL nBAutoReconnect
LOCAL cResponseJson

nSuccess := 0

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

oRest := CreateObject("Chilkat.Rest")

//  Connect to the REST server.
nBTls := 1
nPort := 443
nBAutoReconnect := 1
nSuccess := oRest:Connect("www.alphavantage.co", nPort, nBTls, nBAutoReconnect)
IF (nSuccess != 1)
    ? oRest:LastErrorText
    oRest:destroy()
    RETURN
ENDIF

//  Get a stock quote:
//  Sending GET request to https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=my_api_key
nSuccess := oRest:AddQueryParam("function", "TIME_SERIES_DAILY")
nSuccess := oRest:AddQueryParam("symbol", "AAPL")
nSuccess := oRest:AddQueryParam("apikey", "my_api_key")
cResponseJson := oRest:FullRequestNoBody("GET", "/query")
IF (oRest:LastMethodSuccess != 1)
    ? oRest:LastErrorText
    oRest:destroy()
    RETURN
ENDIF

? cResponseJson

//  Sample response:
//  {
//      "Meta Data": {
//          "1. Information": "Daily Prices (open, high, low, close) and Volumes",
//          "2. Symbol": "AAPL",
//          "3. Last Refreshed": "2019-12-06",
//          "4. Output Size": "Compact",
//          "5. Time Zone": "US/Eastern"
//      },
//      "Time Series (Daily)": {
//          "2019-12-06": {
//              "1. open": "267.4800",
//              "2. high": "271.0000",
//              "3. low": "267.3000",
//              "4. close": "270.7100",
//              "5. volume": "25447644"
//          },
//          "2019-12-05": {
//              "1. open": "263.7900",
//              "2. high": "265.8900",
//              "3. low": "262.7300",
//              "4. close": "265.5800",
//              "5. volume": "18661343"
//          },
//          "2019-12-04": {
//              "1. open": "261.0700",
//              "2. high": "263.3100",
//              "3. low": "260.6800",
//              "4. close": "261.7400",
//              "5. volume": "16810388"
//          },
//  ...
//          "2019-07-18": {
//              "1. open": "204.0000",
//              "2. high": "205.8800",
//              "3. low": "203.7000",
//              "4. close": "205.6600",
//              "5. volume": "18582161"
//          }
//      }
//  }

oRest:destroy()