Java

Get a Header Field of an Attachment

Demonstrates the Chilkat Email.GetAttachmentHeader method, which returns the value of a named header field of an attachment. The first argument is the zero-based attachment index and the second is the MIME header-field name. This example reads the Content-Disposition header of the first attachment.

Background: Each attachment is a MIME part with its own header block. Where GetAttachmentAttr extracts a single named parameter, GetAttachmentHeader returns the entire value of a header field — for example the full Content-Disposition: attachment; filename="notes.txt" line. That is useful for inspecting or debugging exactly how a part is described, including any custom X- headers a sender may have added.

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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[])
  {
    //  Demonstrates the GetAttachmentHeader method, which returns the value of a header field
    //  (by name) of an attachment.  The first argument is the zero-based attachment index and the second is the
    //  MIME header-field name.

    CkEmail email = new CkEmail();
    email.put_Subject("Attachment header field");

    email.AddStringAttachment("notes.txt","Some notes.");

    //  Get the Content-Disposition header of the first attachment (index 0).
    String disp = email.getAttachmentHeader(0,"Content-Disposition");
    System.out.println("Attachment 0 Content-Disposition: " + disp);
  }
}