Turning a JSON list into a POJO

Posted by Josh L on Stack Overflow See other posts from Stack Overflow or by Josh L
Published on 2012-08-30T15:27:16Z Indexed on 2012/08/30 15:38 UTC
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I'm having trouble getting this bit of JSON into a POJO. I'm using Jackson configured like this:

protected ThreadLocal<ObjectMapper> jparser = new ThreadLocal<ObjectMapper>();

    public void receive(Object object) {
    try { 
        if (object instanceof String && ((String)object).length() != 0) {
            ObjectDefinition t = null ; 
            if (parserChoice==0) { 
                if (jparser.get()==null) {
                    jparser.set(new ObjectMapper());
                }
                t = jparser.get().readValue((String)object, ObjectDefinition.class);
            }

            Object key = t.getKey();
            if (key == null)
                return;
            transaction.put(key,t); 
        } 
    } catch (Exception e) { 
        e.printStackTrace();
    }
}

Here's the JSON that needs to be turned into a POJO:

{
    "id":"exampleID1",
    "entities":{
      "tags":[
         {
            "text":"textexample1",
            "indices":[
               2,
               14
            ]
         },
         {
            "text":"textexample2",
            "indices":[
               31,
               36
            ]
         },
         {
            "text":"textexample3",
            "indices":[
               37,
               43
            ]
         }
      ]
}

And lastly, here's what I currently have for the java class:

    protected Entities entities;
@JsonIgnoreProperties(ignoreUnknown = true)
protected class Entities {
    public Entities() {}
    protected Tags tags;
    @JsonIgnoreProperties(ignoreUnknown = true)
    protected class Tags {
        public Tags() {}

        protected String text;

        public String getText() {
            return text;
        }

        public void setText(String text) {
            this.text = text;
        }
    };

    public Tags getTags() {
        return tags;
    }
    public void setTags(Tags tags) {
        this.tags = tags;
    }
};
//Getters & Setters ...

I've been able to translate the more simple objects into a POJO, but the list has me stumped.

Any help is appreciated. Thanks!

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