Velocity用户指南(中文版)(3)(完)
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指令(Directives)
#set( $monkey = $bill ) ## variable reference
#set( $monkey.Friend = "monica" ) ## string literal
#set( $monkey.Blame = $whitehouse.Leak ) ## property reference
#set( $monkey.Plan = $spindoctor.weave($web) ) ## method reference
#set( $monkey.Number = 123 ) ##number literal
#set( $monkey.Say = ["Not", $my, "fault"] ) ## ArrayList
#set( $monkey.Map = {"banana" : "good", "roast beef" : "bad"}) ## Map
$monkey.Say.get(0)
$monkey.Map.get("bannana")
$monkey.Map.banana ## same as above
#set( $value = $foo + 1 ) ## Addition
#set( $value = $bar - 1 ) ## Subtraction
#set( $value = $foo * $bar ) ## Multiplication
#set( $value = $foo / $bar ) ## Division
#set( $value = $foo % $bar ) ## Remainder
#set( $criteria = ["name", "address"] )
#foreach( $criterion in $criteria )
#set( $result = $query.criteria($criterion) )
#if( $result )
Query was successful
#end
#end
#set( $criteria = ["name", "address"] )
#foreach( $criterion in $criteria )
#set( $result = false )
#set( $result = $query.criteria($criterion) )
#if( $result )
Query was successful
#end
#end
#set( $directoryRoot = "www" )
#set( $templateName = "index.vm" )
#set( $template = "$directoryRoot/$templateName" )
$template
#set( $template = '$directoryRoot/$templateName’ )
#set( $size = "Big" )
#set( $name = "Ben" )
#set($clock = "${size}Tall$name" )
The clock is $clock.
#if( $foo )
Velocity!
#end
#foreach( $product in $allProducts )
$product
#end
#foreach( $key in $allProducts.keySet() )
Key: $key -> Value: $allProducts.get($key)
#end
#foreach( $customer in $customerList )
$VelocityCount$customer.Name#end
# Default name of the loop counter
# variable reference.
directive.foreach.counter.name = VelocityCount
# Default starting value of the loop
# counter variable reference.
directive.foreach.counter.initial.value = 1
First example:
#foreach( $foo in [1..5] )
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