Rest fullservices
- 2. An ESB is expected to function as a service provider as well as a consumer. This tutorial will explain how Mule ESB can be configured to function as a RESTful WebService endpoint. Mule ESB provides a built-in REST component based on Jersey project. In the first example, we will explore the possibility of creating RESTful web services without using the built-in component;
- 3. The HTTP endpoint of the flow is configured as below. The examples of the earlier post covered one way HTTP end point, this one covers two way or request-response paradigm. The following configuration settings are done in the ‘General’ tab of the HTTP component. Exchange-patterns: request-response Host: localhost Port: 8081 Path: rest
- 4. The next component in the flow is Body to Parameter Body. Retain the default values. The final component in the flow is Maps to XML component. Retain the default values for this component as well. To invoke the application, open any browser window and type the following: http://localhost:8081/rest?name=Rori&age=33 The output generated in the browser window is shown below:
- 5. <?xml version="1.0" encoding="UTF-8"?> <table> <record> <field name="age" type="java.lang.String">40</field> <field name="name" type="java.lang.String">Rori</field> </record> </table>
- 6. The source code of the mule flow is shown below: <?xml version="1.0" encoding="UTF-8"?> <mule xmlns:tracking=http://www.mulesoft.org/schema/mule/ee /tracking xmlns:jdbc- ee=http://www.mulesoft.org/schema/mule/ee/jdbc xmlns:http="http://www.mulesoft.org/schema/mule/http"
- 7. <flow name="http_restfulwsFlow" > <http:inbound-endpoint exchange-pattern="request- response" host="localhost" port="8081" path="rest“ mimeType="text/plain" contentType="text/plain« doc:name="HTTP"/> <response> <jdbc-ee:maps-to-xml-transformer doc:name="Maps to XML"/>
- 8. </response> <http:body-to-parameter-map-transformer doc:name="Body to Parameter Map"/> </flow> </mule>
- 9. For all practical purposes, the developer would like to have the ability to customize the output XML into a more sensible format aligned to business domain. To achieve the same a new Mule flow is created. The grapfhic flow is: