java @JsonFormat注解 规定时间日期返回值格式

用法

@Data
public class proRes {
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm",timezone = "GMT+8")
    private Date startTime;
    // pattern 规定返回值的格式； 
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm",timezone = "GMT+8")
    private Date endTime;
}

详解（一搜一大堆）

@JsonFormat(pattern = “yyyy-MM-dd’T’HH:mm:ss.SSSZ”, 
			locale = “zh”, 
			timezone = “GMT+8”)

1.pattern 指定转化的格式SSSZ(S指的是微秒，Z指时区)，此处的pattern和java.text.SimpleDateFormat中的Time Patterns一致

2.locale主要指语言，如果中文的话，月份输出是五月，但是英文就是May，尤其是在反序列化的时候特别重要

3.timezone主要解决“8小时”问题

三、pattern对应关系

Letter Date or Time Component Presentation Examples
G Era designator Text AD
y Year Year 1996; 96
Y Week year Year 2009; 09
M Month in year Month July; Jul; 07
w Week in year Number 27
W Week in month Number 2
D Day in year Number 189
d Day in month Number 10
F Day of week in month Number 2
E Day name in week Text Tuesday; Tue
u Day number of week (1 = Monday, …, 7 = Sunday) Number 1
a Am/pm marker Text PM
H Hour in day (0-23) Number 0
k Hour in day (1-24) Number 24
K Hour in am/pm (0-11) Number 0
h Hour in am/pm (1-12) Number 12
m Minute in hour Number 30
s Second in minute Number 55
S Millisecond Number 978
z Time zone General time zone Pacific Standard Time; PST; GMT-08:00
Z Time zone RFC 822 time zone -0800
X Time zone ISO 8601 time zone -08; -0800; -08:00