Chilkat Examples

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(Go) Facebook Upload Photo from Local File

Uploads a new photo with a caption from a local file.

Chilkat Go Downloads

Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    http := chilkat.NewHttp()

    req := chilkat.NewHttpRequest()
    req.SetHttpVerb("POST")
    req.SetContentType("multipart/form-data")
    req.SetPath("/v2.7/me/photos")

    // Use the previously obtained access token.
    // Note: The publish_actions scope is required to upload a photo.
    req.AddHeader("Authorization","Bearer FACEBOOK-ACCESS-TOKEN")

    // Send an "Expect: 100-continue" header in the request.
    // This causes the HTTP server to end a 100-continue response
    // immediately after receiving the HTTP header.  The client
    // (Chilkat) will receive this intermediate response, and if
    // it's not an error response, it knows that the HTTP server will
    // accept the data that is forthcoming.
    // The alternative is to get an error response after trying to upload
    // the entire contents of the files.
    req.AddHeader("Expect","100-continue")

    // Set a photo caption.
    req.AddParam("caption","Here are some penguins!")

    // Additional parameters can be added to the request by 
    // calling AddParam once per parameter.  
    // See https://developers.facebook.com/docs/graph-api/reference/user/photos
    // for more information about other optional parameters.

    // Indicate the local file to be uploaded.
    success := req.AddFileForUpload("source","qa_data/jpg/penguins2.jpg")
    if success != true {
        fmt.Println(req.LastErrorText())
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // Upload the image file..
    resp := http.SynchronousRequest("graph.facebook.com",443,true,req)
    if http.LastMethodSuccess() != true {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        req.DisposeHttpRequest()
        return
    }

    // Examine the response body:
    responseJson := resp.BodyStr()
    fmt.Println(responseJson)

    // The response contains JSON, such as this:
    // {"id":"10210224963435862","post_id":"10224048320139890_10210224963435862"}

    resp.DisposeHttpResponse()

    http.DisposeHttp()
    req.DisposeHttpRequest()

 

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