Verifying documents with exception handling Leave feedback

GroupDocs.Signature provides different error messages due to validation issues, missing required data, files etc. For handling these exceptions class GroupDocsSignatureException should be used.

Here are the steps to handle exceptions from GroupDocs.Signature while document verification:

• Compose try-catch block above verify method with catching GroupDocsSignatureException type error.

This example shows how to handle GroupDocs.Signature exceptions.

try {
    Signature signature = new Signature(filePath);
    // create QRCode option with predefined QRCode text
    DigitalVerifyOptions options = new DigitalVerifyOptions();
    options.setCertificateFilePath(Constants.CertificatePfx);
    // skip password specification
    //options.setPassword("1234567890");
 
    // sign document to file
    VerificationResult result = signature.verify(options);
}catch(GroupDocsSignatureException ex){
    System.out.print("GroupDocs Signature Exception: " + ex.getMessage());
}
catch (Exception ex)
{
    System.out.print("System Exception: " + ex.getMessage());
}

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.