Simple service rest
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This document shows how to configure a RESTful web service endpoint in Mule ESB without using its built-in REST component. It demonstrates setting up an HTTP inbound endpoint with request-response exchange pattern. When a request is received at the endpoint, the HTTP body is transformed to parameters then to XML response. This provides a simple RESTful web service that returns XML data based on URL query parameters.
Simple service rest
- 2. These tutorials show how Mule ESB configure a 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 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. The last component in the flow is Maps to XML component. To invoke the application throught browser window: 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">25</field> <field name="name" type="java.lang.String">Alexander</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/t racking 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"/> </response> <http:body-to-parameter-map-transformer doc:name="Body to Parameter Map"/> </flow> </mule>
- 8. The grapfhic flow is: