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Revision: 64123
at July 6, 2013 05:24 by mindinmotionmkd
Initial Code 
import java.lang.reflect.Field;
import java.lang.reflect.Type;
import java.util.Iterator;
import java.util.Map.Entry;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;

public class PackagingDeserializer<PackagingResponse> implements com.google.gson.JsonDeserializer<PackagingResponse>{


	@Override
	public PackagingResponse deserialize(JsonElement arg0, Type arg1,
			JsonDeserializationContext arg2) throws JsonParseException {
		Class klass =  ((Class)arg1);
		Field[] fields = klass.getDeclaredFields();
		PackagingResponse r = null;
		try {
			r = (PackagingResponse)klass.newInstance();
		} catch (InstantiationException e3) {
			// TODO Auto-generated catch block
			e3.printStackTrace();
		} catch (IllegalAccessException e3) {
			// TODO Auto-generated catch block
			e3.printStackTrace();
		}
		JsonObject o = 	arg0.getAsJsonObject();
		parse(o, r);
		
		return r;
	}

	private void parse(JsonObject o, PackagingResponse r){
		Iterator<Entry<String, JsonElement>> i = o.entrySet().iterator();
		while(i.hasNext()){
			Entry<String, JsonElement> e = i.next();
			JsonElement el = e.getValue();
			if(el.isJsonObject())
				parse(el.getAsJsonObject(), r);
			for(Field f : r.getClass().getDeclaredFields()){
				f.setAccessible(true);
				if(f.getName().equals(e.getKey())){
					try {
						f.set(r,el.getAsString());
					} catch (IllegalArgumentException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					} catch (IllegalAccessException e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
				}
			
			}
		}
	}
}
Initial URL 

                                

                                                            

                                    

                                        

                                        Initial Description
                                        

                                    

                                    
Change the generic class to whatever class you wish. JSON arrays, types etc, are not handled, you should do that. Purpose of this snippet is to deserialize only needed JSON keys with respect to the class members of your class.

                                

                                                            

                                    

                                        

                                        Initial Title
                                        

                                    

                                    
Java Reflection and recursive JSON deserializer using Gson

                                

                                                            

                                    

                                        

                                        Initial Tags
                                        

                                    

                                    
java

                                

                                                            

                                    

                                        

                                        Initial Language
                                        

                                    

                                    
Java