Tutorial: CICS Web Service Provider from JSON, Request-Response Bottom-up Method

Walks you through the steps required to expose an existing CICS COBOL application as a Web service described by a set of request and response JSON files.

In this tutorial, you use the bottom-up method to expose an existing CICS COBOL application, loanPaym, as a Web service. The loanPaym application accepts a principal amount, a loan term, and a rate as input values; then returns the calculated monthly loan payment.

Prerequisite

Review the Assumptions and Before you begin a CICS Web services tutorial sections in the Tutorials: CICS Web Services topic to be sure you have your environment configured properly.

Sequence

To complete this tutorial, progress through these topics in the order presented here. The bottom of each topic provides Next topic and Previous topic navigational links to help you proceed in the proper sequence:

  1. Set Up the LoanJSON Project
    Guides you through the process of using the provided CICS Web services demonstration files to create the LoanJSON project used in this tutorial.
  2. Generate LOANPAYM Web Service Components
    Provides step-by-step instructions to generate all required components of the LOANPAYM Web service from the LoanJSON project.
  3. Update the CWSJSON Enterprise Server Region
    Walks you through the steps required to update the CWSJSON enterprise server region to run the LOANPAYM Web service.
  4. Test the loanPaym Web Service Provider
    Provides instructions and the code required to send a JSON POST request to test the loanPaym Web service provider.
Parent topic: Tutorials: CICS Web Services
Related concepts
Tutorials: CICS Web Services