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POJackson JSON Views ignored
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  1. POJackson JSON Views ignored
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    copied!<p>I am trying to use Jackson2.0.0 with Spring3.1 so that I can use the jackson-Module-Hibernate. I have followed the steps as described here <a href="http://blog.pastelstudios.com/2012/03/12/spring-3-1-hibernate-4-jackson-module-hibernate/" rel="nofollow">http://blog.pastelstudios.com/2012/03/12/spring-3-1-hibernate-4-jackson-module-hibernate/</a>. All this seems to work fine, but when I try using JSON Views so that the JSON contains only the fields in the view it does not work.</p> <p>The active view is always null. How do make the view active? I have tried for a day now with no luck...any help at all will be greatly appreciated. Thanks in advance.</p> <p>Below is the relavant code.</p> <p>Here is the Mapper</p> <pre><code>import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.datatype.hibernate4.Hibernate4Module; public class HibernateAwareObjectMapper extends ObjectMapper { public HibernateAwareObjectMapper() { Hibernate4Module hm = new Hibernate4Module(); registerModule(hm); hm.configure(Hibernate4Module.Feature.FORCE_LAZY_LOADING, true); } </code></pre> <p>} </p> <p>Here is the view class</p> <pre><code>public class DiffViews { public static class Public { } </code></pre> <p>}</p> <p>Here is the POJO where I use the view </p> <pre><code> @JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="@id") @JsonIgnoreProperties(ignoreUnknown=true) @Entity public class Premium implements java.io.Serializable { @JsonView(DiffViews.Public.class) private String sequence; @JsonView(DiffViews.Public.class) @Column(name = "SEQUENCE", nullable = false, length = 4) public String getSequence() { return this.sequence; } public void setSequence(String sequence) { this.sequence = sequence; } @Column(name = "NAME", nullable = false) public String getName() { return this.name; } public void setName(String name) { this.name = name; } </code></pre> <p>)</p> <p>In my spring controller </p> <pre><code>@RequestMapping("/cartonPremium") public void listAll( @RequestParam("page") int page, @RequestParam("rows") int maxResults, @RequestParam("sidx") String sortKey, @RequestParam("sord") String sortOrder, HttpServletResponse response) { HibernateAwareObjectMapper mapper = new HibernateAwareObjectMapper(); mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS); mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); mapper.enable(SerializationFeature.WRITE_CHAR_ARRAYS_AS_JSON_ARRAYS); mapper.disable(MapperFeature.DEFAULT_VIEW_INCLUSION ); JqgridResponse&lt;Premium&gt; gridResponse = new JqgridResponse&lt;Premium&gt;(); gridResponse.setRows(premiumList); gridResponse.setRecords(""+premiumList.size()); gridResponse.setTotal(""+premiumList.size()); gridResponse.setPage(""+page); try { ObjectWriter objWriter= mapper.writerWithView(DiffViews.Public.class); Class&lt;?&gt; xxx = mapper.getSerializationConfig().getActiveView(); objWriter.writeValue(response.getOutputStream(), gridResponse); //mapper.writerWithView(DiffViews.Public.class).writeValue(response.getOutputStream(), gridResponse); } catch (JsonGenerationException e) { e.printStackTrace(); } catch (JsonMappingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } </code></pre> <p>My spring config </p> <pre><code> &lt;mvc:annotation-driven&gt; &lt;mvc:message-converters&gt; &lt;bean class="com.creata.json.MappingJackson2HttpMessageConverter"&gt; &lt;property name="objectMapper"&gt; &lt;bean class="com.creata.json.HibernateAwareObjectMapper" /&gt; &lt;/property&gt; &lt;/bean&gt; &lt;/mvc:message-converters&gt; &lt;/mvc:annotation-driven&gt; </code></pre>
 

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