Date conversion in Freemarker and freemarker date conversion

Date conversion in Freemarker and freemarker date conversion

1. Convert the date represented by the number type to the datetime type and output the string.
$ {Item. time? Number_to_datetime}. The default format is "yyyy-MM-dd hh: mm: ss ".

You can manually set the datetime format before calling, for example, <# setting datetime_format = "yyyy-MM-dd"/>

2. Convert the date represented by the date type to the string format and output the string.
$ {Item. time? String ("MM dd, yyyy ")}



3. If item. time is null, Freemarker reports an error, which is annoying.
So I wrote a common date tool function:

<# Function number_to_ymdhms date>

<# If date! = Null>

<# Setting datetime_format = "yyyy-MM-dd hh: mm: ss"/>

<# Return date? Number_to_datetime/>

</# If>

<# Return ""/>

</# Function>

<# Function date_to_ymdhms date>

<# If date! = Null>

<# Return date? String ('yyyy-MM-dd hh: mm: ss')/>

</# If>

<# Return ""/>

</# Function>

Introduction Method: <# include "/user/common/function/date. ftl"/>
Call method: $ {number_to_ymdhms (item. addtime )}
 
The advantage is that the date processing is unified to one place and the format is unified. If you do not need a uniform function, you need to write another function with a format.
Null must be determined to prevent the following error: null exception.

First: http://fansunion.cn/article/detail/531.html