Deserialize ArrayList from String using Jackson

Question

I am using Spring\'s MappingJacksonHttpMessageConverter to convert JSON message to object in my controller.

Answer 1

Check out this article describing how to use the features of the jackson objectMapper to accomplish this.

https://github.com/FasterXML/jackson-dataformat-xml/issues/21

For me adding the following solved this issue

jsonMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);

Answer 2

As far as I see the incoming JSON doesn't contain any array. The question is: is "images" supposed to be separated or it contains a single image? Let's assume they are comma separated:

public class Product {
   private String name;
   private List<String> images;

   @JsonProperty("images")
   public String getImagesAsString() {
      StringBuilder sb = new StringBuilder();
      for (String img : images) {
          if (sb.length() > 0) sb.append(',');
          sb.append(img);
      }
      return sb.toString();
   }

   public void setImagesAsString(String img) {
       this.images = Arrays.asList(img.split(","));
   }

   @JsonIgnore
   public List<String> getImages() {
       return images;
   }
}