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(Go) QR Code Generator via api.qrserver.com REST APISee more HTTP ExamplesDemonstrates how to generate a QR code using the api.qrserver.com REST API service.Note: This example requires Chilkat v11.0.0 or greater. For more information, see https://goqr.me/api/doc/create-qr-code/
success := false // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. http := Http_Ref.html">chilkat.NewHttp() // Send the following GET request to get a binary response. // The body of the binary response contains the image data for the QR code. // https://api.qrserver.com/v1/create-qr-code/?data=[URL-encoded-text]&size=[pixels]x[pixels] queryParams := JsonObject_Ref.html">chilkat.NewJsonObject() queryParams.UpdateString("data","Hello World") queryParams.UpdateString("size","100x100") // Get a PNG file.. // Possible formats are: // png // gif // jpeg // jpg // svg // eps // Case matters. Use lowercase. queryParams.UpdateString("format","png") // Send the GET request to an endpoint. // Chilkat will add the url-encoded query params passed in the JSON. resp := HttpResponse_Ref.html">chilkat.NewHttpResponse() success = http.HttpParams("GET","https://api.qrserver.com/v1/create-qr-code/",queryParams,resp) if success == false { fmt.Println(http.LastErrorText()) http.DisposeHttp() queryParams.DisposeJsonObject() resp.DisposeHttpResponse() return } // Did it succeed? if resp.StatusCode() != 200 { // The response body, if anything, would not be the image data, but would likely be the error text (or HTML, or whatever...) fmt.Println(resp.BodyStr()) fmt.Println("Response status = ", resp.StatusCode()) fmt.Println("Failed.") http.DisposeHttp() queryParams.DisposeJsonObject() resp.DisposeHttpResponse() return } // Success if we get here.. // Save the binary body as the PNG file, or you can get the bytes of the PNG.. success = resp.SaveBodyBinary("c:/temp/qa_output/qr_code.png") // Or get the bytes: bd := BinData_Ref.html">chilkat.NewBinData() resp.GetBodyBd(bd) // Use the bytes in bd... // See the online reference documentation for the function to access the bytes directly. fmt.Println("Success.") http.DisposeHttp() queryParams.DisposeJsonObject() resp.DisposeHttpResponse() bd.DisposeBinData() |
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