Cannot deserialize value of type `java.util.Date` from String，expected format “yyyy-MM-dd HH:mm:ss“

When using elementplus's el-date-picker, the backend reports an error:

 Resolved [org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize value of type `java.util.Date` from String "2022-09-08T00:00:00.000Z": expected format "yyyy-MM-dd HH:mm:ss"; nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "2022-09-08T00:00:00.000Z": expected format "yyyy-MM-dd HH:mm:ss"<EOL> at [Source: (org.springframework.util.StreamUtils$NonClosingInputStream); line: 1, column: 76] (through reference chain: com.aifast.domain.Application["startTime"])]

<el-date-picker
    v-model="editApplication.endTime"
    type="datetime"
    format="YYYY-MM-DD HH:mm:ss"
    placeholder="请选择结束时间"
/>

Adding annotations to the back end doesn't work

 @TableField("start_time")
 @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
 @JsonFormat(timezone = "GMT+8", pattern = "yyyy-MM-dd HH:mm:ss",locale="zh")
 private Date startTime;

Print the value passed from the front end to the back end, as shown in the figure below:

 Found and not formatted.

Later, I looked through the attributes of elementplus el-date-picker and found  the value-format attribute. The official explanation is as follows

attribute name	illustrate	type	optional value	Defaults
value-format	Optional, the format of the bound value. If not specified, the binding value is a Date object	string	View date format	——

Later, specify the value-format and it will be done.

<el-date-picker
    v-model="editApplication.startTime"
    type="datetime"
    format="YYYY-MM-DD HH:mm:ss"
    value-format="YYYY-MM-DD HH:mm:ss"
    placeholder="请选择开始时间"
/>