Velocity with the tool class Datetool, Numbertool, etc... __velocity

Org.apache.velocity.tools.generic.DateTool
Jfinal can add Request.setattribute ("date", new Datetool ()) to the interceptor, which you can use at any time in the velocity template of the. vm.

About date, as follows:

function examples Show results

function Examples	Show Results
$date	2008-04-22
$date. Long	April 22, 2008 10:58 P.M. 54 seconds
$date. Medium_time	22:58:54
$date. full_date	April 22, 2008 Tuesday
$date. yyyy	2008
$date. Get (' Default ', ' short ')	2008-4-22 10:58
$date. Get (' yyyy-m-d h:m:s ')	2008-4-22 22:58:54
$date. Whenis (' 2008-04-20 ')	2 Days hours ago
$date. Whenis (' 2008-04-20 '). Full	2 hours minutes seconds 484 milliseconds ago
$date. Whenis (' 2008-04-20 ').	-2
$date. Whenis (' 2008-04-20 ')	Hours minutes ago
$date. Whenis (' 2008-04-20 ', ' 2008-04-20 ')	Same time
$date. Difference (' 2008-04-20 ', ' 2008-04-20 ')	2 days
$date. Whenis (' 2008-04-20 ').	-2

Org.apache.velocity.tools.generic.MathTool jfinal can be added to the Interceptor Request.setattribute ("math", New Mathtool ()), Date you can use it at any time in the. VM's velocity template.
About math, as follows:
function examples Show results

function Examples	Show Results
$math. Add ("10", "4")	14
$math. Sub ("100", "20")	80
$math. Mul ("11", "7")	77
$math. Div ("100", "5")	20
$math. Idiv ("100", "5")	20
$math. Pow ("2", "5")	32
$math. MoD ("13", "5")	3
$math. Max ("99", "16")	99
$math. Min ("99", "16")	16
$math. ABS ("-99")	99
\ $math. Cell ("99.26")	$math. Cell ("99.26")
$math. Floor ("99.26")	99
$math. Random	0.7663665545444911
$math. Random ("1", "10")	2
$math. Roundto ("2", "5")	5.0
$math. Tointeger ("15")	15
$math. ToDouble ("15")	15.0
$math. Tonumber ("15")	15

Org.apache.velocity.tools.generic.NumberTool jfinal can add Request.setattribute ("number", new Numbertool ()) to the Interceptor, Date you can use it at any time in the. VM's velocity template.
About number, as follows:
function examples Show results

$number. Locale	Zh_cn
$number. Format ("35")	35.0
$number. Integer ("35.47")	35
$number. Number ("35.47")	35.47
$number. Percent ("0.3547")	35%
$number. Tonumber ("35.47")	35.47
$number. Format ("#0.00", 35.5659)	35.56 Keep two decimal digits

Org.apache.velocity.tools.generic.SortTool
Jfinal can add Request.setattribute ("Sorter", New Sorttool ()) to the interceptor, which you can use at any time in the velocity profile of the. vm.
About Sorter, as follows:
function examples Show results

function Examples	Show Results
$sorter. Sort ([' d ', ' A ', ' B ', ' C '])	[A, B, C, d]
$sorter. Sort ([5,1,12,3])	[1, 3, 5, 12]