Mulesoft REST API with POST Operation.

Use the following steps to expose a REST API with predefined Payload and Consume a REST API with given payload.

1. Create a mulesoft project called ConsumeRestAPI. 
2. Add HTTP listener to the flow. 
• Add Connector configurations. 
• Host - localhost
• Port - 8081
• Base Path - /
• Specify the path 
• Path - /postrequest
• Go to MIME Type section
• MIME Type - application/json
• Go to Advanced section
• Allowed Method - POST
• Go to Metadata section
• Add metadata - Output:Payload
• Add
• Give a name - RequestPayload
• Select Type - JSON
• Example - Provide sample Json file. 
• Select
3. Add Logger
• Message  - #[payload.elementname]
4. Add Request - HTTP. To consume a target REST API. 
• Configuration:
• Add
• Name : Target Name
• Base Path : /
• Protocol - HTTPS
• Host - target-host-name
• Port - 443
• Authentication
• Basic Authentication
• Username
• Password
• Request :
• Method : POST
• Path : REST API URI
• Body
• payload - You can modify the payload using DW. 
5. Add Transform
• Output
• output application/json
• ---
• payload