<td th:text="${#dates.format(contractInfo.datePostpone, 'yyyy-MM-dd')}"></td>其中的#dates是thymeleaf的内置工具对象。
dates: methods for java.util.Date objects: formatting, component extraction, etc.
附录：
内置基本对象（内置的基本对象可用#号直接访问。）
ctx: the context object.
vars: the context variables.
locale: the context locale.
request: (only in Web Contexts) the HttpServletRequest object.
response: (only in Web Contexts) the HttpServletResponse object.
session: (only in Web Contexts) the HttpSession object.
servletContext: (only in Web Contexts) the ServletContext object.
例子：
country: <span th:text="${#locale.country}">China</span>内置工具对象
execInfo: information about the template being processed.
messages: methods for obtaining externalized messages inside variables expressions, in the same way as they would be obtained using #{…} syntax.
uris: methods for escaping parts of URLs/URIs
conversions: methods for executing the configured conversion service (if any).
dates: methods for java.util.Date objects: formatting, component extraction, etc.
calendars: analogous to #dates, but for java.util.Calendar objects.
numbers: methods for formatting numeric objects.
strings: methods for String objects: contains, startsWith, prepending/appending, etc.
objects: methods for objects in general.
bools: methods for boolean evaluation.
arrays: methods for arrays.
lists: methods for lists.
sets: methods for sets.
maps: methods for maps.
aggregates: methods for creating aggregates on arrays or collections.
ids: methods for dealing with id attributes that might be repeated (for example, as a result of an iteration).
例子：
time:<span th:text="${#dates.format(date, 'yyyy-MM-dd HH:mm:ss')}">2018-03-18 22:03:08</span><br>