json总结

package test;

import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
import com.lincomb.scene.input.model.ShopNames;
import com.lincomb.scene.input.model.TShop;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

import java.util.Arrays;
import java.util.Date;
import java.util.List;

/**
 * @Package test
 * @Description: ${todo}
 * @date 2017/10/31
 */
public class JsonUtilsTest {
    public static void main(String[] args) {

        ShopNames shopNames = new ShopNames(1, "c0", "value");
        shopNames.settShops(Arrays.asList("shop1","shop2","shop3"));
        shopNames.settShops2(Arrays.asList(new TShop(1L,1,new Date()),new TShop(2L,2,new Date()),new TShop(3L,3,new Date())));

        List
 
   list = Arrays.asList(new TShop(1L,1,new Date()),new TShop(2L,2,new Date()),new TShop(3L,3,new Date()));

        /**
         * gson
         */

        // 1 当对象的字段值为空或null时，跳过该字段的json转换
        Gson gson = new Gson();
//      serializeNulls()是GsonBuilder提供的一种配置，当对象的字段值为空或null时，依然对该字段进行转换
//      Gson gson2 = new GsonBuilder().serializeNulls().create();


        //gson: object -> json(string)
        String json = gson.toJson(shopNames);
        System.out.println("gson : "+json);

        //gson: json ->object
        ShopNames shopNames2 =gson.fromJson(json,ShopNames.class);
        System.out.println("gson : object1  "+shopNames2.toString());
        System.out.println("gson : object1  "+shopNames2.gettShops2().toString());


        //gson:list