SpringBoot-Java8Date

在SpringBoot和Feign使用Java8的Date类型，如LocalDate、LocalDateTime，会出现Format不符合常规的情况

Software	Version
SpringBoot	1.5.13.RELEASE
Java	1.8.0_201

默认时间格式显示

// DefaultTimeBean
private LocalDate localDate;
private LocalDateTime localDateTime;
private LocalTime localTime;

public DefaultTimeBean(LocalDate localDate, LocalDateTime localDateTime, LocalTime localTime) {
    this.localDate = localDate;
    this.localDateTime = localDateTime;
    this.localTime = localTime;
}

// getter and setter

• 通过Rest获取

@GetMapping("/getDefaultJava8Time")
public DefaultTimeBean getDefaultJava8Time() {
    return new DefaultTimeBean(LocalDate.now(), LocalDateTime.now(), LocalTime.now());
}

• 结果

// 全部是以数组的形式返回，这不符合我们的开发规范，要在序列化/反序列化的时候就进行formart
{
	localDate: [2019, 2, 19],
	localDateTime: [2019, 2, 19, 15, 49, 10, 964000000],
	localTime: [15, 49, 10, 964000000]
}

格式化时间显示

• Maven

// 不需要写version
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

• application.yml

spring:
  jackson:
    serialization:
      WRITE_DATES_AS_TIMESTAMPS: false

• 注解配置format规则

// TimeBean
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE)
private LocalDate localDate;

@DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")
private LocalDateTime localDateTime;

@JsonFormat(pattern = "HH:mm:ss")
@DateTimeFormat(iso = DateTimeFormat.ISO.TIME)
private LocalTime localTime;

• 通过Rest获取

Get

@GetMapping("/getFormatJava8Time")
public TimeBean getFormatJava8Time() {
	return new TimeBean(LocalDate.now(), LocalDateTime.now(), LocalTime.now());
}

• 结果

{
    localDate: "2019-02-19",
    localDateTime: "2019-02-19 15:57:08",
    localTime: "15:57:08"
}

Post

@PostMapping("/formatJava8Time")
public TimeBean postDateTime(@RequestBody TimeBean timeBean) {
	System.out.println(timeBean.getLocalDate());
	System.out.println(timeBean.getLocalDateTime());
	System.out.println(timeBean.getLocalTime());
	return timeBean;
}

• 结果

{
    "localDate": "2019-05-02",
    "localDateTime": "2019-06-15 12:23:59",
    "localTime": "15:12:23"
}

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