Java

HTTP multipart/form-data Upload

See more HTTP Examples

Demonstrates how to upload files to an HTTP server using a multipart/form-data POST. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Http;
import com.chilkatsoft.chilkat2.HttpRequest;
import com.chilkatsoft.chilkat2.HttpResponse;

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.

        Http http = new Http();

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

        // 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");

        // Call AddFileForUpload2 for each file to be uploaded in the HTTP multipart/form-data POST
        // To allow Chilkat to determine the content-type automatically based on file-extension,
        // call AddFileForUpload instead.

        // The 1st arg is the filename passed in the HTTP request.
        // The 2nd arg is the path in the local filesytem.
        // The file is not loaded into memory.  It is streamed directly from the file
        // when the HTTP POST is sent.
        try {
            req.addFileForUpload2("starfish.jpg", "c:/qa_data/starfish.jpg", "image/jpg");

            req.addFileForUpload("something.pdf", "c:/qa_data/something.pdf");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Its also possible to add a file from a string:
        req.addStringForUpload("test.xml", "test.xml", "<abc>This is the test.xml content</abc>", "utf-8");
        // We'll assume success since no files are involved..

        // This sends the HTTP request (with 3 files being uploaded) to
        // http://www.mywebserver123abc.com/rcvFormDataUpload.aspx
        HttpResponse resp = new HttpResponse();
        try {
            http.httpSReq("www.mywebserver123abc.com", 80, false, req, resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("HTTP response status: " + resp.getStatusCode());
        // See the online reference documentation for
        // other information that can be obtained from the response object.

        // To send using SSL/TLS, do this instead.
        // This sends to https://www.mywebserver123abc.com/rcvFormDataUpload.aspx
        try {
            http.httpSReq("www.mywebserver123abc.com", 443, true, req, resp);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("HTTP response status: " + resp.getStatusCode());
        // See the online reference documentation for
        // other information that can be obtained from the response object.
    }
}