Thymeleaf uses two objects ා dates or ා calendars in the template to process dates, most of which are similar.

Development environment: IntelliJ IDEA 2019.2.2
Spring Boot version: 2.1.8

Create a new Spring Book project named demo.

1,pom.xml
Adding Thymeleaf dependencies

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

2,src/main/resources/application.yml
Set the template cache to false so that when you refresh the browser after modifying the html page, you can see the results immediately

spring:
  thymeleaf:
    cache: false

3,src/main/java/com/example/demo/TestController.java

package com.example.demo;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.*;

@Controller
public class TestController {
    @RequestMapping("/")
    public String test(Model model){
        Calendar cal = Calendar.getInstance();
        Date date = cal.getTime();

        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();
        cal1.add(Calendar.DATE, 1);
        cal2.add(Calendar.DATE, 2);

        Date[] arr = new Date[]{cal1.getTime(), cal2.getTime()};
        List list = Arrays.asList(arr);
        Set set = new HashSet(list);

        model.addAttribute("date", date);
        model.addAttribute("cal", cal);
        model.addAttribute("arr", arr);
        model.addAttribute("list", list);
        model.addAttribute("set", set);

        return "test";
    }
}

4,src/main/resources/templates/test.html

<div>format date<div>
format(date)
<div th:text="${#dates.format(date)}"></div>
formatISO(date)
<div th:text="${#dates.formatISO(date)}"></div>
format(date,'yyyy-MM-dd HH:mm:ss')
<div th:text="${#dates.format(date,'yyyy-MM-dd HH:mm:ss')}"></div>
format(cal)
<div th:text="${#calendars.format(cal)}"></div>
formatISO(date)
<div th:text="${#calendars.formatISO(date)}"></div>
format(date,'yyyy-MM-dd HH:mm:ss')
<div th:text="${#calendars.format(date,'yyyy-MM-dd HH:mm:ss')}"></div>
arrayFormat(arr)
<div th:each="date : ${#dates.arrayFormat(arr)}">
    <div th:text="${date}"></div>
</div>
listFormat(list,'yyyy-MM-dd')
<div th:each="date : ${#dates.listFormat(list,'yyyy-MM-dd')}">
    <div th:text="${date}"></div>
</div>
setFormat(set)
<div th:each="date : ${#dates.setFormat(set)}">
    <div th:text="${date}"></div>
</div>
<div>get date<div>
day(date) The next few days
<div th:text="${#dates.day(date)}"></div>
month(date) Month
<div th:text="${#dates.month(date)}"></div>
monthName(date) Month name
<div th:text="${#dates.monthName(date)}"></div>
monthNameShort(date) Abbreviation of month name
<div th:text="${#dates.monthNameShort(date)}"></div>
year(date) Particular year
<div th:text="${#dates.year(date)}"></div>
dayOfWeek(date) Days of the week index
<div th:text="${#dates.dayOfWeek(date)}"></div>
dayOfWeekName(date) What day of the week
<div th:text="${#dates.dayOfWeekName(date)}"></div>
dayOfWeekNameShort(date) What day of the week is abbreviated as
<div th:text="${#dates.dayOfWeekNameShort(date)}"></div>
hour(date) Time
<div th:text="${#dates.hour(date)}"></div>
minute(date) branch
<div th:text="${#dates.minute(date)}"></div>
second(date) second
<div th:text="${#dates.second(date)}"></div>
millisecond(date) Millisecond
<div th:text="${#dates.millisecond(date)}"></div>

Browser access: http://localhost:8080
Page output:

format date
format(date)
October 13, 2019 10:35:32 p.m.
formatISO(date)
2019-10-13T22:35:32.484+08:00
format(date,'yyyy-MM-dd HH:mm:ss')
2019-10-13 22:35:32
format(cal)
October 13, 2019 10:35:32 p.m.
formatISO(date)
2019-10-13T22:35:32.484+08:00
format(date,'yyyy-MM-dd HH:mm:ss')
2019-10-13 22:35:32
arrayFormat(arr)
October 14, 2019, 10:35:32 p.m.
October 15, 2019 10:35:32 p.m.
listFormat(list,'yyyy-MM-dd')
2019-10-14
2019-10-15
setFormat(set)
October 15, 2019 10:35:32 p.m.
October 14, 2019, 10:35:32 p.m.
get date
day(date)
13
month(date) month
10
Month Name (date) month name
October
Month Name Short (date) Month Name
October
year(date) year
2019
Days of Week Index
1
dayOfWeekName(date) What day of the week
Sunday
dayOfWeekNameShort(date) for short
Sunday
hour(date)
22
minute(date) score
35
second(date) seconds
32
millisecond(date) milliseconds
484