关于Java跨域Json字符转类对象的方法示例

{
 "eventList": [
 {
  "id": 1030,
  "eventId": "1508779115818499700",
  "createTime": 1508779115000,
  "endTime": 1508865480000,
  "eventContent": "123",
  "openid": "o4eWZ06xzHW6mc2gMZMYVDEtx1zk"
 },
 {
  "id": 1029,
  "eventId": "1508382907251660498",
  "createTime": 1508382906000,
  "endTime": 1508383020000,
  "eventContent": "ahhhhh",
  "openid": "o4eWZ06xzHW6mc2gMZMYVDEtx1zk"
 },
 {
  "id": 1028,
  "eventId": "1508308708414580378",
  "createTime": 1508308721000,
  "endTime": 1508309040000,
  "eventContent": "30",
  "openid": "o4eWZ06xzHW6mc2gMZMYVDEtx1zk"
 },
 {
  "id": 1027,
  "eventId": "1508308463330664814",
  "createTime": 1508308480000,
  "endTime": 1508308560000,
  "eventContent": "28",
  "openid": "o4eWZ06xzHW6mc2gMZMYVDEtx1zk"
 },
 {
  "id": 1026,
  "eventId": "1508308463017144213",
  "createTime": 1508308479000,
  "endTime": 1508308560000,
  "eventContent": "27",
  "openid": "o4eWZ06xzHW6mc2gMZMYVDEtx1zk"
 }
 ],
 "page": "1",
 "size": "5",
 "isHasPage": "1"
}

import com.yhn.consumer.entity.Event;
import lombok.Data;
import org.json.simple.JSONObject;
import java.io.Serializable;
import java.util.List;
@Data
public class EventVO implements Serializable{
 private List<Event> eventList;
 private String page;
 private String size;
 private String isHasPage;
 public EventVO(JSONObject object){ //构造器方法给对象赋值
 eventList = (List<Event>)object.get("eventList");
 page = (String)object.get("page");
 size = (String)object.get("size");
 isHasPage = (String)object.get("isHasPage");
 }
}

import lombok.Data;
import org.hibernate.annotations.DynamicUpdate;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import java.io.Serializable;
import java.util.Date;
@Entity
@Data
@DynamicUpdate //自动更新时间字段
public class Event implements Serializable { //这是EventVO里List中的Event
 @Id
 @GeneratedValue
 private Integer id; //排序作用
 private String eventId; //事件id
 private Date createTime; //创建时间
 private Date endTime; //更新时间
 private String eventContent; //提醒事件内容
 private String openid; //用户id
}

 @Test
 public void clientDemo()throws Exception {
 StringBuilder json = new StringBuilder();
  URL urlObject = new URL("http://127.0.0.1/meetingSign/test/server?openid=o4eWZ06xzHW6mc2gMZMYVDEtx1zk&page=2&size=5"); //指定URL
  HttpURLConnection uc = (HttpURLConnection) urlObject
   .openConnection(); //开启连接
  BufferedReader in = new BufferedReader(new InputStreamReader(uc.getInputStream(), "utf-8"));
  String inputLine = null;
  while ((inputLine = in.readLine()) != null) {
  json.append(inputLine); //拼接json
  }
  in.close();
  uc.disconnect();
  System.out.println(json); //查看是否拿到。
  //去除可能含编码UTF-8等，因为可能含有Bom头文件。
  String result = formatString(json.toString());
  JSONParser parser=new JSONParser();
  org.json.simple.JSONObject data = new org.json.simple.JSONObject();
  data = (org.json.simple.JSONObject) parser.parse(result);
  EventVO eventVO = new EventVO(data); //把值传进去
  log.info("eventVO={}",eventVO);
 }
 /**
 * 去除bom报头
 */
 public static String formatString(String s) {
 if (s != null) {
  s = s.replaceAll("\ufeff", "");
 }
 return s;
 }