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POHow to unmarshall to different @RequestBody object types?
 

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  1. POHow to unmarshall to different @RequestBody object types?
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    <p>I'm using Spring in my web service which receives XML as input. It can be XML embebed in the HTTP request or as a plain text in the <em>request</em> attribute.</p> <p>Currently my web service is handling two different XML schemas so my unmarshaller can unmarshall the XML files to two object types (for example: Foo and Bar).</p> <p>In my Controller, I have the next code to handler the <em>request</em> attribute:</p> <pre><code>@RequestMapping(value={"/mypath"}, method={RequestMethod.POST}, headers={"content-type=application/x-www-form-urlencoded"}) @ResponseBody public ResponseObject getResponse(@RequestParam("request") String request, HttpServletRequest req) { </code></pre> <p>It works perfectly, with the request string I can unmarshall to Foo object or Bar object.</p> <p>The problem comes with the XML embebed:</p> <pre><code>@RequestMapping(value={"/mypath"}, method={RequestMethod.POST}, headers={"content-type=text/xml"}) @ResponseBody public ResponseObject getResponse(@RequestBody Foo request, HttpServletRequest req) { </code></pre> <p>and</p> <pre><code>@RequestMapping(value={"/mypath"}, method={RequestMethod.POST}, headers={"content-type=text/xml"}) @ResponseBody public ResponseObject getResponse(@RequestBody Bar request, HttpServletRequest req) { </code></pre> <p>and here is the MessageConverter:</p> <pre><code>&lt;bean id="marshallingHttpMessageConverter" class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter"&gt; &lt;property name="marshaller" ref="jaxb2Marshaller" /&gt; &lt;property name="unmarshaller" ref="jaxb2Marshaller" /&gt; &lt;/bean&gt; &lt;oxm:jaxb2-marshaller id="jaxb2Marshaller" contextPath="path.to.Foo:path.to.Bar"/&gt; </code></pre> <p>I think that the MessageConverter should do the unmarshall automagically but I receive the next error:</p> <blockquote> <p>java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path '/ws/mypath.ws': [...] If you intend to handle the same path in multiple methods, then factor them out into a dedicated handler class with that path mapped at the type level!</p> </blockquote> <p>How can I unmarshall automatically to different <code>@RequestBody</code> object types? (with the same <em>web service path</em>)</p>
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