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PORestTemplate unmarshal errorBody
 

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    <p>Good day.</p> <p>I am writing REST client on Spring. The server can send in response an XML or JSON marshalled object. In case of normal request/responce its works fine. My RestTemplate client can unmarshall response. But in case of 404 error the server send an error descriptor as XML/JSON into response body.</p> <p>I don't know how to unmarshall error request body.</p> <p>This is my REST client code:</p> <pre class="lang-java prettyprint-override"><code>@Service public class XsdClientImpl implements InitializingBean, XsdClient { private static final Logger LOGGER = LoggerFactory.getLogger(XsdClientImpl.class); @Autowired @Qualifier("xsdClientRestTemplate") private RestTemplate restTemplate; private String baseUrl; @Override public XsdInfoType fetchNamespace(String namespace) throws XsdClientException { Map&lt;String, String&gt; vars = Collections.singletonMap("namespace", namespace); try { return restTemplate.getForObject(baseUrl + "/xsd/get/{namespace}.xml", XsdInfoType.class, vars); } catch (final HttpClientErrorException e) { // e.getResponseBodyAsByteArray() how to unmarshall it? it can be XML or JSON return null; } } } </code></pre> <p>This is fragment of Spring config:</p> <pre class="lang-xml prettyprint-override"><code>&lt;bean id="objectMapper" class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean" p:indentOutput="true" p:simpleDateFormat="yyyy-MM-dd'T'HH:mm:ss.SSSZ"&gt; &lt;/bean&gt; &lt;bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean" p:targetObject-ref="objectMapper" p:targetMethod="registerModule"&gt; &lt;property name="arguments"&gt; &lt;list&gt; &lt;bean class="com.fasterxml.jackson.datatype.joda.JodaModule"/&gt; &lt;/list&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"/&gt; &lt;bean id="jaxb2RootElementHttpMessageConverter" class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter"/&gt; &lt;bean id="mappingJackson2HttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"&gt; &lt;property name="objectMapper" ref="objectMapper"/&gt; &lt;/bean&gt; &lt;bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" p:location="classpath:xsd-client.properties"/&gt; &lt;bean class="org.springframework.web.client.RestTemplate" id="xsdClientRestTemplate"&gt; &lt;property name="messageConverters"&gt; &lt;list&gt; &lt;ref bean="mappingJackson2HttpMessageConverter"/&gt; &lt;ref bean="jaxb2RootElementHttpMessageConverter"/&gt; &lt;/list&gt; &lt;/property&gt; &lt;/bean&gt; </code></pre> <p>Note: In normal case REST server send XsdInfoType marshalled object. But on error response object has other type.</p>
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