How to handle date formatting problems in Java

1. The simplest way is to annotate the corresponding object

Here's an example:

@DateTimeFormat (pattern= "YYYY-MM-DD")
@JsonFormat (pattern= "Yyyy-mm-dd", timezone = "gmt+8")
Private Date valuedate;

Note: TimeZone = "gmt+8" must be added, or less one day

If your field is a date format, as defined above, but if you are using MyBatis, you must not write the type timestamp in MyBatis, otherwise you will get an error.

The correct wording is as follows:

Property column

<resultmap id= "Baseresultmap" type= "Com.cn.demo.domain.Card" >

<result column= "Createtime" property= "Createtime"/>

</resultMap>

The error is spelled as follows:

<resultmap id= "Baseresultmap" type= "Com.cn.demo.domain.Card" >

<result column= "Createtime" property= "Createtime" jdbctype= "TIMESTAMP"/>

</resultMap>

In short, it involves to the date format of place can not add jdbctype= "TIMESTAMP"

Note: the date type in the MySQL database displays only the month and day, and the datetime type shows the date

2. When the controller layer is converted to date, the code is as follows:

Date date = new SimpleDateFormat ("Yyyy-mm-dd", Locale.getdefault ()). Parse (valuedate);

Where Valuedate is the data passed in, but the string format to be passed in the same format as "YYYY-MM-DD", otherwise it will report an exception

How to handle date formatting problems in Java