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POSpring's Json not being resolved with appropriate response
 

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    <p>I've tried to have a controller in Spring return a JSON response to no avail using the Jackson classes as <a href="http://blog.springsource.com/2010/01/25/ajax-simplifications-in-spring-3-0/" rel="noreferrer">recommended with 3.0</a>. I've got the jackson jar files(jackson-core-asl-1.5.5.jar &amp; jackson-mapper-asl-1.5.5.jar) in my class path of course.</p> <p>As for the appconfig.xml entries, I'm not sure I need these. I've put them in there as a last act of desperation before returning to ol' fashion non-json ajax. </p> <p>In debug, I watch the controller get the request, return the foo and then, in firebug, get a 406.</p> <p>The error messages are as follows: From the logger when set to debug: org.springframework.web.HttpMediaTypeNotAcceptableException: Could not find acceptable representation</p> <p>From the response: (406) The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers ().</p> <p>My appconfig.xml is here:</p> <pre class="lang-xml prettyprint-override"><code> &lt;!-- Configures support for @Controllers --&gt; &lt;mvc:annotation-driven /&gt; &lt;!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory --&gt; &lt;bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver"&gt; &lt;property name="mediaTypes"&gt; &lt;map&gt; &lt;entry key="html" value="text/html"/&gt; &lt;entry key="json" value="application/json"/&gt; &lt;/map&gt; &lt;/property&gt; &lt;property name="viewResolvers"&gt; &lt;list&gt; &lt;bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/&gt; &lt;bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"&gt; &lt;property name="prefix" value="/WEB-INF/views/"/&gt; &lt;property name="suffix" value=".jsp"/&gt; &lt;/bean&gt; &lt;/list&gt; &lt;/property&gt; &lt;property name="defaultViews"&gt; &lt;list&gt; &lt;bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" /&gt; &lt;/list&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource"&gt; &lt;property name="basename" value="messages"&gt;&lt;/property&gt; &lt;/bean&gt; </code></pre> <p>My controller</p> <pre><code>@RequestMapping(value="foo/bar", method=RequestMethod.GET) public @ResponseBody foo getFoo(@RequestParam String fooId) { return new foo(fooId); } </code></pre> <p>On the jsp, where the ajax call is made:</p> <pre><code>function addRow() { $.getJSON("foo/bar",{ fooId: 1} , function(data) { alert("it worked."); }); </code></pre> <p>}</p> <p>Let me know if there's any more info that is needed. </p>
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    1. COmore coverage at [Spring JSON request getting 406 (not Acceptable)](http://stackoverflow.com/questions/7462202/spring-json-request-getting-406-not-acceptable)
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