IBM i Apache Server - Using HTTP for YAJL (JSON/XML)

YAJL (Yet Another JSON Library) for IBM i is a JSON parsing and generation library designed to work with the IBM i platform. It provides a way to handle JSON data in RPG (Report Program Generator) and other programming environments on IBM i.

YAJL (Yet Another JSON Library) is a JSON parsing and generation library that can be used in RPG and other programming languages on the IBM i platform. Here’s a step-by-step guide on how to download and install YAJL on your IBM i system:

Now we know that YAJL (Yet Another JSON Library) for IBM i is a JSON parsing and generation library - lets look at some simple examples of how to use YAJL in RPG to parse a JSON string and generate a JSON string. This example assumes you have YAJL installed and configured on your IBM i system.

Come with me while we stroll through the process of creating an IBM i HTTP Server with IBM Web Administration for i. This IBM's browser based webserver creation application.

To configure the IBM i HTTP Server for YAJL (Yet Another JSON Library), you can create with the default WEB UI or you can do it all from the command line. Also known as - the good old green screen. 1. Install YAJL: - Download YAJL from Scott Klement's repository. 2. Create and Configure HTTP Server Instance: - If you don't have an existing HTTP server instance, create one. 3. Set Up Web Services: - Use RPGLE to create web services that handle JSON data. 4. Configure HTTP Server for JSON Handling: - Ensure your HTTP server is configured to handle JSON requests. This involves setting up the appropriate directives in your HTTP server configuration files to route requests to your RPG programs that use YAJL. 5. Test Your Configuration: - After setting up, test your configuration by sending JSON requests to your server and verifying the responses. Debugging tools and logs can be very helpful during this step.

To configure the IBM i HTTP Server for YAJL (Yet Another JSON Library), you'll need to add just a few lines of code! 1. Install YAJL: - Download YAJL from Scott Klement's repository. 2. Create and Configure HTTP Server Instance: - If you don't have an existing HTTP server instance, create one. 3. Set Up Web Services: - Use RPGLE to create web services that handle JSON data. 4. Configure HTTP Server for JSON Handling: - Ensure your HTTP server is configured to handle JSON requests. This involves setting up the appropriate directives in your HTTP server configuration files to route requests to your RPG programs that use YAJL. 5. Test Your Configuration: - After setting up, test your configuration by sending JSON requests to your server and verifying the responses. Debugging tools and logs can be very helpful during this step.

Time to secure our IBM i HTTP Webserver and keep our webservices, and more importantly, our DATA safe and secure.

Some simple SQLRPGLE code that will run as an IBM i webservice... this webservice will run on the IBM i Integrated Web Server, designed to receive an internet JSON payload and save it to an IFS location.

This reads the JSON from the IFS – decodes it using Y.A.J.L and reports on time taken to perform decode. Writing an RPG program to read JSON using YAJL is actually pretty straightforward — I hope this code example helps!

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This reads the JSON from the IFS – decodes it using JSON_TABLE and reports on time taken to perform decode.