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POSpring MVC 3.0 - Service layer using annonations
 

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    <p>In my Spring MVC application with a single Controller class,</p> <pre><code>@Controller public class MyController { @RequestMapping(method = RequestMethod.POST, value = "/*.htm") public myMethod{@RequestBody final MyRequestBean myRequest} } </code></pre> <p>My input is in the form of JSON and I use Jackson for converting it to Java object. Now, based on the property in the Java object, I want to send to appropriate service class. If it is,</p> <pre><code>myRequest.value == "1" -&gt; FirstService myRequest.value == "2" -&gt; SecondService </code></pre> <p>All these Service classes will be implementing a basic interface. I dont want to do this instantiation in my Java code. How can I move this to a configuration file. How can I inject these objects dynamically based on the request values. Please note that am using annotations. Am new to Spring.Please advise</p> <p><strong>EDIT: To include my solution</strong><br> In my dispatcher.xml,</p> <pre><code>`&lt;util:map id="myMap"&gt; &lt;entry key="service1" value="com.service.MyService1" /&gt; &lt;entry key="service2" value="com.service.MyService1" /&gt; &lt;/util:map&gt;` </code></pre> <p>In my controller,</p> <p><code>@Resource private Map myMap;</code></p> <p>and in the method inside controller,<br> <code>MyService myService = (MyService) Class.forName((String)myMap.get(myRequest.getValue())).newInstance(); System.out.println("My value" + myService.doService());</code></p> <p>As can be seen, have used Java reflection for getting the instance from the string returned from my XML. Is this the correct way?</p>
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