Jackson time format, time annotations @JsonFormat usage, jet lag problem description

Jackson was the official recommendation of SPRINGMVC, in fact I was used to Gson, but because of the company's unified use of Jackson, the nature of Jackson need to pay more attention. Let's say one of the annotations is @JsonFormat.

@JsonFormat use

We can have two usages (I know), on the object property, or on the method of the property, getter as shown in the following code:

Add to attribute:

1. ... ...
3. /**更新时间 用户可以点击更新，保存最新更新的时间。**/
4. @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss")
5. private Date updateTime;
7. ... ...

Add to getter Method:

2. ... ...
6. @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss")
8. public Date getUpdateTime() {
10. return updateTime;
12. }
16. ... ...

The output of the above results is the same. This is nothing to explain. Specific output format, self-tuning pattern .

@JsonFormat 8-hour difference.

The above use directly, in our China and our Beijing time, will be 8 hours, because we are East eight (Beijing time).

So we want to specify the time zone () when formatting timezone , the code is as follows:

1. ... ...
3. /** update time users can click Update to save the time of the latest update. **/
4. @JsonFormat ( Pattern= "YYYY-MM-DD HH:mm:ss" ,timezone< Span class= "pun" >= "gmt+8" )
5. private Date Updatetime
7. ... ...

That is, add a property, timezone="GMT+8" you can, getter method I will not write, the same.

Let me see the result, I this interface is so output: public security Network to prepare queries, http://www.sojson.com/api/gongan/sina.com.cn as an example.

2. {
4. "data": {
6. "id": "11000002000016",
8. "sitename": "新浪网",
10. "sitedomain": "sina.com.cn",
12. "sitetype": "交互式",
14. "cdate": "2016-01-21",
16. "comtype": "企业单位",
18. "comname": "北京新浪互联信息服务有限公司",
20. "comaddress": "北京市网安总队",
22. "updateTime": "2017-09-05 02:26:34" //看这...这里就是刚刚输出的。
24. },
26. "status": 200
28. }
30. Transferred from: https://www.sojson.com/blog/246.html

Jackson time format, time annotations @JsonFormat usage, jet lag problem description