Book Image

Mastering ServiceNow - Second Edition

Book Image

Mastering ServiceNow - Second Edition

Overview of this book

ServiceNow is a SaaS application that provides workflow form-based applications. It is an ideal platform for creating enterprise-level applications giving requesters and fulfillers improved visibility and access to a process. ServiceNow-based applications often replace email by providing a better way to get work done. The book steps through the main aspects of the ServiceNow platform, from the ground up. It starts by exploring the core architecture of ServiceNow, including building the right data structure. To add business logic and control data, and interactivity to user interaction, you will be shown how to code on both server and the client. You will then learn more about the power of tasks, events and notifications. The book will then focus on using web services and other mechanisms to integrate ServiceNow with other systems. Furthermore, you will learn how to secure applications and data, and understand how ServiceNow performs logging and error reporting. You will then be shown how to package your applications and changes, so they can be installed elsewhere and ways to maintain them easily. If you wish to create an alternative simple interface, then explore ways to make ServiceNow beautiful using Service Portal. By the end of the book, you will know the fundamentals of the ServiceNow platform, helping you be a better ServiceNow System Administrator or developer.
Table of Contents (18 chapters)
Mastering ServiceNow Second Edition
Credits
Notice
About the Author
About the Reviewer
www.PacktPub.com
Preface

Building custom interfaces


Web Service Import Sets and Direct Web Services provide a simple way to have a remote system send or retrieve data from your instance. However, beyond specifying the fields in import sets, the methods and schema are not configurable. What if you wanted a more flexible system?

Creating scripted services

ServiceNow supports both SOAP and REST scripted web services:

  • SOAP scripted web services have two related lists, which contain the input and output parameters. These are used to generate a WSDL with a single method. A single script field determines the processing. In it, the input parameters are represented with a variable called request, while the output parameters with a variable called response.

  • REST scripted APIs are more sophisticated. They support functionality such as versioning and flexible security and can work with information supplied in headers, the body, parameters, and much more-make as many methods as you want! As before, the scripts use the request and...