(Java) SharePoint -- Approve a File Submitted for Content Approval

Approves the file submitted for content approval with the specified comment.

Note: The SharePoint list or library should have the settings enabled to require approval for submitted items. This is done in the "Versioning Settings" for the list or library.

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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[])
  {
    //  This requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();

    //  If SharePoint Windows classic authentication is used, then set the
    //  Login, Password, LoginDomain, and NtlmAuth properties.
    http.put_Login("SHAREPOINT_USERNAME");
    http.put_Password("SHAREPOINT_PASSWORD");
    http.put_LoginDomain("SHAREPOINT_NTLM_DOMAIN");
    http.put_NtlmAuth(true);

    //  The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    //  If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    //  establish the cookie as shown at SharePoint Online Authentication

    //  Indicate that we want a JSON reply
    http.put_Accept("application/json;odata=verbose");

    //  Only persons who have Full Control or Design permissions can approve or reject
    //  items or files in a list or library that requires approval. Other site users
    //  can only view what they have permission to view or what they have uploaded
    //  themselves.
    // 
    //  Important:  Approval or rejection of items or files in lists or libraries must
    //  be done one at a time. You cannot approve or reject multiple items or files in
    //  one operation.
    // 

    CkHttpRequest req = new CkHttpRequest();
    req.put_HttpVerb("POST");
    req.put_Path("/_api/web/GetFileByServerRelativeUrl('/ChilkatDocLibrary/sample.docx')/approve(comment='Check-in comment for the approval.')");

    //  We need to add a form digest value in the X-RequestDigest header field.
    //  See this example for details on
    //  how to get (and cache) a form digest value
    req.AddHeader("X-RequestDigest","SHAREPOINT_FORM_DIGEST");

    //  Send the request to approve the document.
    boolean bUseTls = true;
    CkHttpResponse resp = http.SynchronousRequest("SHAREPOINT_HTTPS_DOMAIN",443,bUseTls,req);
    if (http.get_LastMethodSuccess() != true) {
        System.out.println(http.lastErrorText());
        return;
        }

    //  A successful update will return a 200 status code with an empty body.
    //  A non-successful update will return a JSON response body..
    if (resp.get_StatusCode() != 200) {
        System.out.println("Response status code = " + resp.get_StatusCode());
        CkJsonObject json = new CkJsonObject();
        json.Load(resp.bodyStr());
        json.put_EmitCompact(false);
        System.out.println(json.emit());
        System.out.println("Failed");

        return;
        }

    System.out.println("Success.");
  }
}