Problem summary file

Question 1 ： Use SpringBoot How to change the time format

Use @JsonFormat annotation

public User {
	...
	
	@JsonFormat(pattern = "yyyy-MM-dd" timezone="GMT+8")
	private Date createTime;
	
	@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
	private LocalDateTime updateTime;
	...
}

• JsonFormat Annotations can help us convert dates into time strings in a specified format
• pattern Property specifies the time format ,timezone Property specifies the time zone
• LocalDateTime There will be no time zone problem ;Date There will be time zone problems , Need to use timezone Make a designation