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Java

Send a REST Request with a Streamed Body

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Demonstrates Rest.FullRequestStream, which sends a complete request whose body is read from a Stream, then returns the response body as text.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background. Streaming the body is appropriate for large uploads because the data is read incrementally from the source (here a file) rather than being held entirely in memory.

Chilkat Java Downloads

Java
import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    CkRest rest = new CkRest();
    boolean bTls = true;
    boolean bAutoReconnect = true;
    success = rest.Connect("example.com",443,bTls,bAutoReconnect);
    if (success == false) {
        System.out.println(rest.lastErrorText());
        return;
        }

    //  The file paths are relative to the application's current working directory.  Absolute paths
    //  may also be used.  Supply the paths appropriate to your own environment.

    //  The request body is read from a Stream.  Here the stream's source is a local file, which is
    //  appropriate for large uploads because the data need not be held entirely in memory.
    CkStream bodyStream = new CkStream();
    bodyStream.put_SourceFile("qa_data/upload.json");

    rest.AddHeader("Content-Type","application/json");

    //  The 3rd argument is the Stream that supplies the request body.
    String responseText = rest.fullRequestStream("POST","/api/upload",bodyStream);
    if (rest.get_LastMethodSuccess() == false) {
        System.out.println(rest.lastErrorText());
        return;
        }

    System.out.println(responseText);
  }
}