title: Jackson @JsonProperty(required=true) doesn't throw an exception
body: <p>I am using jackson 2.2 annotation @JsonProperty with required set to true. While deserializing json file which doesn't contain that property via ObjectMapper readValue() method no exception is being thrown.
  Is it supposed to work in a different way or did I missed something?</p>
  
  <p>My dto class:</p>
  
  <pre><code>public class User {
      public enum Gender {MALE, FEMALE}
  
      ;
  
      public static class Name {
          private String _first, _last;
  
          public String getFirst() {
              return _first;
          }
  
          public String getLast() {
              return _last;
          }
  
          public void setFirst(String s) {
              _first = s;
          }
  
          public void setLast(String s) {
              _last = s;
          }
      }
  
      private Gender _gender;
      private Name _name;
      private boolean _isVerified;
      private byte[] _userImage;
  
      @JsonProperty(value ="NAAME",required = true)
      public Name getName() {
          return _name;
      }
  
      @JsonProperty("VERIFIED")
      public boolean isVerified() {
          return _isVerified;
      }
  
      @JsonProperty("GENDER")
      public Gender getGender() {
          return _gender;
      }
      @JsonProperty("IMG")
      public byte[] getUserImage() {
          return _userImage;
      }
  
      @JsonProperty(value ="NAAME",required = true)
      public void setName(Name n) {
          _name = n;
      }
      @JsonProperty("VERIFIED")
      public void setVerified(boolean b) {
          _isVerified = b;
      }
      @JsonProperty("GENDER")
      public void setGender(Gender g) {
          _gender = g;
      }
      @JsonProperty("IMG")
      public void setUserImage(byte[] b) {
          _userImage = b;
      }
  }
  </code></pre>
  
  <p>This is how do I deserialize the class:</p>
  
  <pre><code>public class Serializer {
      private ObjectMapper mapper;
  
      public Serializer() {
          mapper = new ObjectMapper();
          SimpleModule sm = new SimpleModule("PIF deserialization");
          mapper.registerModule(sm);
      }
  
      public void writeUser(File filename, User user) throws IOException {
          mapper.writeValue(filename, user);
      }
  
      public User readUser(File filename) throws IOException {
            return mapper.readValue(filename, User.class);
        }
  }
  </code></pre>
  
  <p>This is how it is actually called:</p>
  
  <pre><code>    Serializer serializer = new Serializer();
      User result = serializer.readUser(new File("user.json"));
  </code></pre>
  
  <p>Actuall json looks like:</p>
  
  <pre><code>{"GENDER":"FEMALE","VERIFIED":true,"IMG":"AQ8="}
  </code></pre>
  
  <p>I would expect that since _name is not specified in json file and is required that the exception will be thrown.</p>