got error as parsing json

/**
 * cloudbuy
 * This is a sample server cloudbuy server. 
 *
 * OpenAPI spec version: 1.0.1
 * 
 *
 * NOTE: This class is auto generated by the swagger code generator program.
 * https://github.com/swagger-api/swagger-codegen.git
 * Do not edit the class manually.
 */

package io.swagger.client.model;

import io.swagger.client.model.Order;
import io.swagger.client.model.Product;
import io.swagger.client.model.User;
import java.util.*;
import java.util.Date;
import io.swagger.annotations.*;
import com.google.gson.annotations.SerializedName;

/**
 * 抽奖活动
 **/
@ApiModel(description = "抽奖活动")
public class Activity {
  
  @SerializedName("id")
  private Long id = null;
  @SerializedName("activityNumber")
  private String activityNumber = null;
  @SerializedName("winNumber")
  private String winNumber = null;
  @SerializedName("winuser")
  private User winuser = null;
  @SerializedName("orders")
  private List<Order> orders = null;
  @SerializedName("product")
  private Product product = null;
  @SerializedName("status")
  private String status = null;
  @SerializedName("avaliable")
  private Integer avaliable = null;
  @SerializedName("begintime")
  private Date begintime = null;
  @SerializedName("endtime")
  private Date endtime = null;

  /**
   * 活动编号
   **/
  @ApiModelProperty(value = "活动编号")
  public Long getId() {
    return id;
  }
  public void setId(Long id) {
    this.id = id;
  }

  /**
   * 活动期号
   **/
  @ApiModelProperty(value = "活动期号")
  public String getActivityNumber() {
    return activityNumber;
  }
  public void setActivityNumber(String activityNumber) {
    this.activityNumber = activityNumber;
  }

  /**
   **/
  @ApiModelProperty(value = "")
  public String getWinNumber() {
    return winNumber;
  }
  public void setWinNumber(String winNumber) {
    this.winNumber = winNumber;
  }

  /**
   **/
  @ApiModelProperty(value = "")
  public User getWinuser() {
    return winuser;
  }
  public void setWinuser(User winuser) {
    this.winuser = winuser;
  }

  /**
   **/
  @ApiModelProperty(value = "")
  public List<Order> getOrders() {
    return orders;
  }
  public void setOrders(List<Order> orders) {
    this.orders = orders;
  }

  /**
   **/
  @ApiModelProperty(value = "")
  public Product getProduct() {
    return product;
  }
  public void setProduct(Product product) {
    this.product = product;
  }

  /**
   * 抽奖状态(1.进行中，2.揭晓中，3.完成)
   **/
  @ApiModelProperty(value = "抽奖状态(1.进行中，2.揭晓中，3.完成)")
  public String getStatus() {
    return status;
  }
  public void setStatus(String status) {
    this.status = status;
  }

  /**
   * 剩余人次
   **/
  @ApiModelProperty(value = "剩余人次")
  public Integer getAvaliable() {
    return avaliable;
  }
  public void setAvaliable(Integer avaliable) {
    this.avaliable = avaliable;
  }

  /**
   * 开始时间
   **/
  @ApiModelProperty(value = "开始时间")
  public Date getBegintime() {
    return begintime;
  }
  public void setBegintime(Date begintime) {
    this.begintime = begintime;
  }

  /**
   * 结束时间
   **/
  @ApiModelProperty(value = "结束时间")
  public Date getEndtime() {
    return endtime;
  }
  public void setEndtime(Date endtime) {
    this.endtime = endtime;
  }


  @Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    }
    if (o == null || getClass() != o.getClass()) {
      return false;
    }
    Activity activity = (Activity) o;
    return (this.id == null ? activity.id == null : this.id.equals(activity.id)) &&
        (this.activityNumber == null ? activity.activityNumber == null : this.activityNumber.equals(activity.activityNumber)) &&
        (this.winNumber == null ? activity.winNumber == null : this.winNumber.equals(activity.winNumber)) &&
        (this.winuser == null ? activity.winuser == null : this.winuser.equals(activity.winuser)) &&
        (this.orders == null ? activity.orders == null : this.orders.equals(activity.orders)) &&
        (this.product == null ? activity.product == null : this.product.equals(activity.product)) &&
        (this.status == null ? activity.status == null : this.status.equals(activity.status)) &&
        (this.avaliable == null ? activity.avaliable == null : this.avaliable.equals(activity.avaliable)) &&
        (this.begintime == null ? activity.begintime == null : this.begintime.equals(activity.begintime)) &&
        (this.endtime == null ? activity.endtime == null : this.endtime.equals(activity.endtime));
  }

  @Override
  public int hashCode() {
    int result = 17;
    result = 31 * result + (this.id == null ? 0: this.id.hashCode());
    result = 31 * result + (this.activityNumber == null ? 0: this.activityNumber.hashCode());
    result = 31 * result + (this.winNumber == null ? 0: this.winNumber.hashCode());
    result = 31 * result + (this.winuser == null ? 0: this.winuser.hashCode());
    result = 31 * result + (this.orders == null ? 0: this.orders.hashCode());
    result = 31 * result + (this.product == null ? 0: this.product.hashCode());
    result = 31 * result + (this.status == null ? 0: this.status.hashCode());
    result = 31 * result + (this.avaliable == null ? 0: this.avaliable.hashCode());
    result = 31 * result + (this.begintime == null ? 0: this.begintime.hashCode());
    result = 31 * result + (this.endtime == null ? 0: this.endtime.hashCode());
    return result;
  }

  @Override
  public String toString()  {
    StringBuilder sb = new StringBuilder();
    sb.append("class Activity {\n");
    
    sb.append("  id: ").append(id).append("\n");
    sb.append("  activityNumber: ").append(activityNumber).append("\n");
    sb.append("  winNumber: ").append(winNumber).append("\n");
    sb.append("  winuser: ").append(winuser).append("\n");
    sb.append("  orders: ").append(orders).append("\n");
    sb.append("  product: ").append(product).append("\n");
    sb.append("  status: ").append(status).append("\n");
    sb.append("  avaliable: ").append(avaliable).append("\n");
    sb.append("  begintime: ").append(begintime).append("\n");
    sb.append("  endtime: ").append(endtime).append("\n");
    sb.append("}\n");
    return sb.toString();
  }
}





package io.swagger.client;

import java.io.File;

import java.io.IOException;
import java.nio.charset.Charset;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeoutException;

import org.apache.commons.io.FileUtils;

import com.google.gson.reflect.TypeToken;

import android.app.Activity;
import io.swagger.client.api.UserApi;
import io.swagger.client.model.InlineResponse200;
import io.swagger.client.model.InlineResponse2001;

public class Main {
	
	public static void main(String[] args) throws TimeoutException, ExecutionException, InterruptedException, ApiException, IOException {
		String project=System.getProperty("user.dir");
		String json = FileUtils.readFileToString(new File("D:\\bxdev\\aliyun\\cloudbuy\\doc\\gen\\android\\src\\main\\java\\data.json"),Charset.forName("GBK"));
		System.out.println(json);
		InlineResponse2001 object = JsonUtil.deserializeToObject(json,InlineResponse200.class);
		System.out.println(object);
	}
	
}

{"total":1,"data":[{"id":33,"activityNumber":null,"winNumber":"111122223333","winuser":{"id":33,"userName":"qingtian","nickName":null,"email":null,"password":"123456","phone":"13730666347","userStatus":null,"level":"1"},"orders":[{"id":33,"orderActivity":[],"totalPrice":null,"status":"1","complete":true,"createBy":null}],"product":{"id":65,"name":"OPPO R9s Plus","introduction":"\n6.0英寸大屏，前后1600万像素，光学防抖！这一刻，更清晰！\n(颜色随机)Android 6.0系统，骁龙653处理器,本产品按照获得顺序和填写地址顺序发货哦~!","shortIntroduction":"6GB+64GB内存版 全网通4G手机 双卡双待 金色","detailUrl":"https://item.jd.com/4143446.html","price":3499,"priceType":"1","limitFlag":0,"limitMax":100,"total":35,"largePhotoUrls":"","photoUrls":"https://m.360buyimg.com/n12/jfs/t3982/272/122877612/84922/90018ce0/583d461fNc90d345f.jpg!q70.jpg;https://m.360buyimg.com/n12/jfs/t3565/80/2111927493/59996/3c417f/583d4625N40e85f59.jpg!q70.jpg;https://m.360buyimg.com/n12/jfs/t3952/281/108638797/47113/7a02ecea/583d4629N4cf4970d.jpg!q70.jpg;https://m.360buyimg.com/n12/jfs/t3310/201/2005678460/28838/a8e99bd8/583d462dNae5c8b65.jpg!q70.jpg;https://m.360buyimg.com/n12/jfs/t3871/70/74635942/54915/5037a87c/583d4636Nc1671f2b.jpg!q70.jpg","article":{"id":33,"name":"iphone7","richText":"新世纪电脑一层新"},"catagory":{"id":34,"name":"手机"},"tags":[]},"status":"1","avaliable":100,"begintime":"2017-05-26T01:57:17.159Z","endtime":"2017-05-26T01:57:17.159Z"}]}

Exception in thread "main" java.lang.NumberFormatException: For input string: "2017-05-26T01:57:17.159Z"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Long.parseLong(Long.java:589)
	at java.lang.Long.parseLong(Long.java:631)
	at com.google.gson.JsonPrimitive.getAsLong(JsonPrimitive.java:238)
	at io.swagger.client.JsonUtil$1.deserialize(JsonUtil.java:36)
	at io.swagger.client.JsonUtil$1.deserialize(JsonUtil.java:1)
	at com.google.gson.TreeTypeAdapter.read(TreeTypeAdapter.java:58)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
	at com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
	at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:82)
	at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
	at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
	at com.google.gson.Gson.fromJson(Gson.java:879)
	at com.google.gson.Gson.fromJson(Gson.java:844)
	at com.google.gson.Gson.fromJson(Gson.java:793)
	at io.swagger.client.JsonUtil.deserializeToObject(JsonUtil.java:54)
	at io.swagger.client.Main.main(Main.java:29)
```java

The failure is reported at JsonUtil.java:36 during Main.java:29 deserialization; start there and inspect how the sample's Date fields are handled. Re-run the shown JSON through Main and verify that deserialization completes without NumberFormatException.