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    <p>I succeeded to solve my problem, thanks to <a href="http://markmail.org/search/list:org.codehaus.jackson#query:%20list:org.codehaus.jackson.user+page:1+mid:toy6mh4wpezo3mnq+state:results" rel="noreferrer">Tatu from Jackson ML</a>.</p> <p>I had to use custom non blocking deserializers for every primitive types handled in Jackson. Something like this factory :</p> <pre><code>public class JacksonNonBlockingObjectMapperFactory { /** * Deserializer that won't block if value parsing doesn't match with target type * @param &lt;T&gt; Handled type */ private static class NonBlockingDeserializer&lt;T&gt; extends JsonDeserializer&lt;T&gt; { private StdDeserializer&lt;T&gt; delegate; public NonBlockingDeserializer(StdDeserializer&lt;T&gt; _delegate){ this.delegate = _delegate; } @Override public T deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException { try { return delegate.deserialize(jp, ctxt); }catch (JsonMappingException e){ // If a JSON Mapping occurs, simply returning null instead of blocking things return null; } } } private List&lt;StdDeserializer&gt; jsonDeserializers = new ArrayList&lt;StdDeserializer&gt;(); public ObjectMapper createObjectMapper(){ ObjectMapper objectMapper = new ObjectMapper(); SimpleModule customJacksonModule = new SimpleModule("customJacksonModule", new Version(1, 0, 0, null)); for(StdDeserializer jsonDeserializer : jsonDeserializers){ // Wrapping given deserializers with NonBlockingDeserializer customJacksonModule.addDeserializer(jsonDeserializer.getValueClass(), new NonBlockingDeserializer(jsonDeserializer)); } objectMapper.registerModule(customJacksonModule); return objectMapper; } public JacksonNonBlockingObjectMapperFactory setJsonDeserializers(List&lt;StdDeserializer&gt; _jsonDeserializers){ this.jsonDeserializers = _jsonDeserializers; return this; } } </code></pre> <p>Then calling it like this way (pass as deserializers only those you want to be non blocking) :</p> <pre><code>JacksonNonBlockingObjectMapperFactory factory = new JacksonNonBlockingObjectMapperFactory(); factory.setJsonDeserializers(Arrays.asList(new StdDeserializer[]{ // StdDeserializer, here, comes from Jackson (org.codehaus.jackson.map.deser.StdDeserializer) new StdDeserializer.ShortDeserializer(Short.class, null), new StdDeserializer.IntegerDeserializer(Integer.class, null), new StdDeserializer.CharacterDeserializer(Character.class, null), new StdDeserializer.LongDeserializer(Long.class, null), new StdDeserializer.FloatDeserializer(Float.class, null), new StdDeserializer.DoubleDeserializer(Double.class, null), new StdDeserializer.NumberDeserializer(), new StdDeserializer.BigDecimalDeserializer(), new StdDeserializer.BigIntegerDeserializer(), new StdDeserializer.CalendarDeserializer() })); ObjectMapper om = factory.createObjectMapper(); </code></pre>
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    1. USFrédéric
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