Gson使用初探

参考地址:

http://www.stormzhang.com/android/2014/05/22/android-gson/

我的示例代码:

public void doGsonTest(View view) {
        //参考文档 http://www.stormzhang.com/android/2014/05/22/android-gson/
        Log.d("lsl","doGsonTest");
        
        String JSON_DATA = "{\"id\": 101,\"body\": \"It is my post\",\"number\": 0.13,\"created_at\": \"2014-05-22 19:12:38\"}";
        Foo foo = new Gson().fromJson(JSON_DATA, Foo.class);
        LogUtil.d("lsl","id="+foo.id+"body="+foo.body+"number="+foo.number+"created_at="+foo.created_at);
        
        
        GsonBuilder gsonBuilder = new GsonBuilder();
        gsonBuilder.setDateFormat("yyyy-MM-dd");
        Gson gson = gsonBuilder.create();
        foo = gson.fromJson(JSON_DATA, Foo.class);
        LogUtil.d("lsl","id="+foo.id+"body="+foo.body+"number="+foo.number+"created_at="+foo.created_at);
        
        JSON_DATA = "[{\"id\": 102,\"body\": \"It is my post\",\"number\": 0.13,\"created_at\": \"2014-05-22 19:12:38\"},{\"id\": 103,\"body\": \"It is my post\",\"number\": 0.13,\"created_at\": \"2014-05-22 19:12:38\"}]";
        Foo[] foos = new Gson().fromJson(JSON_DATA, Foo[].class);
        List<Foo> foosList = Arrays.asList(foos);
        for(Foo vo : foosList){
            LogUtil.d("lsl","id="+vo.id+"body="+vo.body+"number="+vo.number+"created_at="+vo.created_at);
        }
        LogUtil.d("lsl","============merchandiose=============");
        JSON_DATA = "{\"op_type\": 10002,\"code\": \"0\",\"msg\": \"success\",\"data\":[{\"id\": 104,\"name\": \"apple\",\"kind_name\": \"food\",\"price\": 0.13,\"created_at\": \"2014-05-22 19:12:38\"},{\"id\": 105,\"name\": \"orange\",\"kind_name\": \"food\",\"price\": 0.13,\"created_at\": \"2014-05-22 19:12:38\"}]}";
        MechandiseListModel mObj = new Gson().fromJson(JSON_DATA, MechandiseListModel.class);
        LogUtil.d("lsl","op_type="+mObj.op_type
                +"code="+mObj.code
                +"msg="+mObj.msg
                );
        List<Mechandise> mList = mObj.data;
        for(Mechandise m : mList){
            LogUtil.d("lsl","" +
                    "id="+m.id+"name="+m.name+"kind_name="+m.kind_name+
                    "price="+m.price+"created_at="+m.created_at
                    );
        }
    }
    public class MechandiseListModel {
        public int op_type;
        public int code;
        public String msg;
        List<Mechandise> data;
    }
    public class Mechandise {
        public int id;
        public String name;
        public String kind_name;
        public float price;
        public String created_at;
    }
    
    
    public class Foo {
        public int id;
        public String body;
        public float number;
        public String created_at;
    }