有些特定需求, 比如说搜索引擎, 很多人都要求时间必须是时间戳. 所以, 我们把时间转成最原始的Long型. Gson默认的是不支持的, 需要手动处理一下.

import java.lang.reflect.Type;import java.util.Date;import com.google.gson.JsonDeserializationContext;import com.google.gson.JsonDeserializer;import com.google.gson.JsonElement;import com.google.gson.JsonParseException;/** * Created with antnest-platform * User: chenyuan * Date: 12/22/14 * Time: 4:39 PM */public class DateDeserializer implements JsonDeserializer
    
      {    public Date deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {        return new java.util.Date(json.getAsJsonPrimitive().getAsLong());    }}
    

import com.google.gson.JsonElement;import java.lang.reflect.Type;import java.util.Date;import com.google.gson.JsonPrimitive;import com.google.gson.JsonSerializationContext;import com.google.gson.JsonSerializer;/** * Created with antnest-platform * User: chenyuan * Date: 12/22/14 * Time: 4:38 PM */public class DateSerializer implements JsonSerializer
    
      {    public JsonElement serialize(Date src, Type typeOfSrc, JsonSerializationContext context) {        return new JsonPrimitive(src.getTime());    }}
    

import com.google.gson.Gson;import com.google.gson.GsonBuilder;import java.text.DateFormat;/** * Created with antnest-platform * User: chenyuan * Date: 12/22/14 * Time: 4:33 PM */public class GsonBuilderUtil {    public static Gson create() {        GsonBuilder gb = new GsonBuilder();        gb.registerTypeAdapter(java.util.Date.class, new DateSerializer()).setDateFormat(DateFormat.LONG);        gb.registerTypeAdapter(java.util.Date.class, new DateDeserializer()).setDateFormat(DateFormat.LONG);        Gson gson = gb.create();        return gson;    }}