유틸리티 객체는 기존처럼 메서드를 호출하는 방식으로 사용할 수 있는 객체들이다.
10-1.숫자관련 #numbers
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숫자에 대한 포매팅을 처리할 때 주로 사용된다.
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[컨트롤러 메서드]
@GetMapping("ch0810/home0101") public String home0101(Model model) { int coin = 1000; model.addAttribute("coin", coin); return "ch0810/home0101"; } -
[뷰 파일]
<html xmlns:th="http://www.thymeleaf.org"> <head> <title>Home</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <table border="1"> <tr> <td>${coin}</td> <td th:text="${coin}"></td> </tr> <tr> <td>${#numbers.formatInteger(coin,3,'COMMA')}</td> <td th:text="${#numbers.formatInteger(coin,3,'COMMA')}"></td> </tr> <tr> <td>${#numbers.formatCurrency(coin)}</td> <td th:text="${#numbers.formatCurrency(coin)}"></td> </tr> <tr> <td> <div>priceValue=99.87654</div> <div>${#numbers.formatInteger(priceValue,3,'COMMA')}</div> <div>${#numbers.formatDecimal(priceValue,5,10,'POINT')}</div> </td> <td> <div th:with="priceValue=99.87654"> <p th:text="${#numbers.formatInteger(priceValue,3,'COMMA')}"></p> <p th:text="${#numbers.formatDecimal(priceValue,5,10,'POINT')}"></p> </div> </td> </tr> </table> </body> </html> -
[응답 화면]
10-1-2 .#numbers.sequence
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컬렉션 없이 단순 반복 처리를 하고 싶다면 Numbers Class(org.thymeleaf.expression.Numbers)
의 Utility method인 #numbers.sequence을 사용하여 먼저 원하는 반복 횟수 만큼의
배열을 생성한 뒤 th:each 의 컬렉션에 넣어 주시면 됩니다.
/* Create a sequence (array) of integer numbers going from x to y */ ${#numbers.sequence(from,to)} ${#numbers.sequence(from,to,step)} <!-- html (Thymeleaf) --> <th:block th:each="num : ${#numbers.sequence(1,5)}"> <div th:text="${num}"></div> </th:block>
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10-2.날짜관련 #dates, #calendars
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자바의 java.util.Date와 java.util.Calendar의 기능을 이용한다.
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[컨트롤러 메서드]
@GetMapping("ch0810/home0201") public String home0201(Model model) { Date date = new Date(); model.addAttribute("now", date); return "ch0810/home0201"; } -
[뷰 파일]
<html xmlns:th="http://www.thymeleaf.org"> <head> <title>Home</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <table border="1"> <tr> <td>${now}</td> <td th:text="${now}"></td> </tr> <tr> <td>${#dates.format(now, 'yyyy-MM-dd')}</td> <td th:text="${#dates.format(now, 'yyyy-MM-dd')}"></td> </tr> <tr> <td>${#dates.format(now, 'yyyy-MM-dd HH:mm:ss')}</td> <td th:text="${#dates.format(now, 'yyyy-MM-dd HH:mm:ss')}"></td> </tr> <tr> <td>${#dates.format(now, 'a h:mm')}</td> <td th:text="${#dates.format(now, 'a h:mm')}"></td> </tr> <tr> <td>${#dates.format(now, 'z a h:mm')}</td> <td th:text="${#dates.format(now, 'z a h:mm')}"></td> </tr> <tr> <td>timeValue=${#dates.createToday()}</td> <td> <div th:with="timeValue=${#dates.createToday()}"> <p>[[${timeValue}]]</p> </div> </td> </tr> </table> </body> </html> -
[응답 화면]
10-3.문자관련 #strings
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문자열을 처리하기 위한 기능을 지원한다.
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[컨트롤러 메서드]
@GetMapping("ch0810/home0301") public String home0301(Model model) { String str = "Hello, World!"; model.addAttribute("str", str); return "ch0810/home0301"; } -
[뷰 파일]
<html xmlns:th="http://www.thymeleaf.org"> <head> <title>Home</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <table border="1"> <tr> <td>${str}</td> <td th:text="${str}"></td> </tr> <tr> <td>${#strings.contains(str, 'Hello')}</td> <td th:text="${#strings.contains(str, 'Hello')}"></td> </tr> <tr> <td>${#strings.containsIgnoreCase(str, 'Hello')}</td> <td th:text="${#strings.containsIgnoreCase(str, 'Hello')}"></td> </tr> <tr> <td>${#strings.startsWith(str, 'Hello')}</td> <td th:text="${#strings.startsWith(str, 'Hello')}"></td> </tr> <tr> <td>${#strings.endsWith(str, 'World!')}</td> <td th:text="${#strings.endsWith(str, 'World!')}"></td> </tr> <tr> <td>${#strings.indexOf(str, 'World!')}</td> <td th:text="${#strings.indexOf(str, 'World!')}"></td> </tr> <tr> <td>${#strings.length(str)}</td> <td th:text="${#strings.length(str)}"></td> </tr> <tr> <td>${#strings.escapeXml(str)}</td> <td th:text="${#strings.escapeXml(str)}"></td> </tr> <tr> <td>${#strings.replace(str, 'Hello', 'Hi')}</td> <td th:text="${#strings.replace(str, 'Hello', 'Hi')}"></td> </tr> <tr> <td>${#strings.toLowerCase(str)}</td> <td th:text="${#strings.toLowerCase(str)}"></td> </tr> <tr> <td>${#strings.toUpperCase(str)}</td> <td th:text="${#strings.toUpperCase(str)}"></td> </tr> <tr> <td>${#strings.trim(str)}</td> <td th:text="${#strings.trim(str)}"></td> </tr> <tr> <td>${#strings.substring(str, 7, 12)}</td> <td th:text="${#strings.substring(str, 7, 12)}"></td> </tr> <tr> <td>${#strings.substringAfter(str, 'World')}</td> <td th:text="${#strings.substringAfter(str, 'World')}"></td> </tr> <tr> <td>${#strings.substringBefore(str, 'World')}</td> <td th:text="${#strings.substringBefore(str, 'World')}"></td> </tr> <tr> <td>tokenStr:${#strings.listSplit(str,' ')}</td> <td> <ul> <li th:each="tokenStr:${#strings.listSplit(str,' ')}">[[${tokenStr}]]</li> </ul> </td> </tr> <tr> <td>tokenStr:${#strings.listSplit(str,' ')}</td> <td> <ul> <li th:each="tokenStr:${#strings.listSplit(str,' ')}">[[${tokenStr}]]</li> </ul> </td> </tr> <tr> <td> <div>strArray=${#strings.listSplit(str,' ')}</div> <div>${#strings.arrayJoin(strArray, '-')}</div> </td> <td> <div th:with="strArray=${#strings.listSplit(str,' ')}"> <p th:text="${#strings.arrayJoin(strArray, '-')}">join : ${#strings.join(strArray, "-")} </p> </div> </td> </tr> </table> </body> </html> -
[응답 화면]
10-4.자바 8 java.time 관련 #temporals
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자바 8 java.time 클래스 기능을 이용한다.
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[컨트롤러 메서드]
@GetMapping("ch0810/home0201") public String home0201(Model model) { Date date = new Date(); model.addAttribute("now", date); return "ch0810/home0201"; } -
[뷰 파일]
<html xmlns:th="http://www.thymeleaf.org"> <head> <title>Home</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <table border="1"> <tr> <td>${now}</td> <td th:text="${now}"></td> </tr> <tr> <td>${#temporals.format(now, 'yyyy-MM-dd')}</td> <td th:text="${#temporals.format(now, 'yyyy-MM-dd')}"></td> </tr> <tr> <td>${#temporals.format(now, 'yyyy-MM-dd HH:mm:ss')}</td> <td th:text="${#temporals.format(now, 'yyyy-MM-dd HH:mm:ss')}"></td> </tr> <tr> <td>${#temporals.format(now, 'a h:mm')}</td> <td th:text="${#temporals.format(now, 'a h:mm')}"></td> </tr> <tr> <td>${#temporals.format(now, 'z a h:mm')}</td> <td th:text="${#temporals.format(now, 'z a h:mm')}"></td> </tr> <tr> <td>timeValue=${#temporals.createToday()}</td> <td> <div th:with="timeValue=${#temporals.createToday()}"> <p>[[${timeValue}]]</p> </div> </td> </tr> </table> </body> </html> -
[응답 화면]
