Java

Add Data to multipart/form-data Request

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Demonstrates how to add content (such as a JPG, PDF, XML, etc.) to multipart/form-data requests. Chilkat2 Java

import com.chilkatsoft.chilkat2.BinData;
import com.chilkatsoft.chilkat2.HttpRequest;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        HttpRequest req = new HttpRequest();
        req.setHttpVerb("POST");
        req.setContentType("multipart/form-data");
        req.setPath("/xyz/something");

        req.addParam("param1", "value1");
        req.addParam("param2", "value2");

        // Add some small files to the request. (Small so we can see what the full request looks like without too much data..)
        BinData bd = new BinData();
        bd.loadFile("qa_data/jpg/starfish20.jpg");
        req.addBdForUpload("starfish20", "starfish20.jpg", bd, "image/jpeg");

        bd.loadFile("qa_data/pdf/helloWorld.pdf");
        req.addBdForUpload("helloWorld", "helloWorld.pdf", bd, "application/pdf");

        bd.loadFile("qa_data/xml/tinyA.xml");
        req.addBdForUpload("tinyA", "tinyA.xml", bd, "text/xml");

        // This HTTP request contains binary data, so we cannot call GenerateRequestText
        // to examine it as a string.  We can instead call GenerateRequestFile
        // to write the request to a file and then examine using a hex editor,
        // or an editor that is capable of handling null bytes and non-printable chars (perhaps by displaying "?" chars instead).
        req.generateRequestFile("qa_output/multipartFormDataRequest.bin");

        System.out.println("OK.");

        // This is the HTTP multipart/form-data request built by the above code:

        // POST /xyz/something HTTP/1.1
        // Host: domain
        // Content-Type: multipart/form-data; boundary=------------090708030009010000030901
        // Content-Length: 2220
        //
        // --------------090708030009010000030901
        // Content-Disposition: form-data; name="param1"
        //
        // value1
        // --------------090708030009010000030901
        // Content-Disposition: form-data; name="param2"
        //
        // value2
        // --------------090708030009010000030901
        // Content-Disposition: form-data; name="starfish20"; filename="starfish20.jpg"
        // Content-Type: image/jpeg
        //
        // JPEG DATA HERE...
        // --------------090708030009010000030901
        // Content-Disposition: form-data; name="helloWorld"; filename="helloWorld.pdf"
        // Content-Type: application/pdf
        //
        // PDF DATA HERE...
        // --------------090708030009010000030901
        // Content-Disposition: form-data; name="tinyA"; filename="tinyA.xml"
        // Content-Type: text/xml
        //
        // XML DATA HERE...
        // --------------090708030009010000030901--
        //
    }
}