VTL语法参考指南-中文版

1. 2. 1. 2. 3. 1. #set C 2. #if/#elseif/#else-3. #foreach-4. #include C Velocity5. #parse C Velocity6. #stop C 7. #macro C (Velocimacro (VM):VTL)8. Comments 1. 2. 5.Feedback. Velocity, Velocity User Guide.. . : $ ! a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z, 0.9, -, _ Examples: ? : $mud-Slinger_9 ? (): $!mud-Slinger_9 ? : $mud-Slinger_. : $ a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z, 0.9, -, _ * .a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z a.za. .za.za. .z, AAAA- ZZZZ, 0.9, -, _* Examples: ?: $customer.Address :customergetAddress(). ? : $purchase.Total. : $ a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z, 0.9, -, _ * . a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z a.za. .za.za. .z, A.ZA. .ZA.ZA. .Z, 0.9, -,_ *( optional parameter list. ) Examples: ?: $customer.getAddress() ? : $purchase.getTotal() ? : $page.setTitle( My Home Page ) VTL,get/set..1. #set1. #set 1.#set1. #set CCCC : # setsetsetset ( $( $( $( $ref = , arg , ) Examples: ? : #set( $monkey = $bill ) ? : #set( $monkey.Friend = monica ) ? : #set( $monkey.Blame = $whitehouse.Leak ) ? : #set( $monkey.Plan = $spindoctor.weave($web) ): #set( $monkey.Number = 123 ) ?: #set( $monkey.Numbers = 1.3 ) ? : #set( $monkey.Say = Not, $my, fault ) ,cheng,: ? Addition: #set( $value = $foo + 1 ) ? Subtraction: #set( $value = $bar - 1 ) ? Multiplication: #set( $value = $foo * $bar ) ? Division: #set( $value = $foo / $bar ) ? Remainder: #set( $value = $foo % $bar )2. #if/#elseif/#else3. #if/#elseif/#else2.#if/#elseif/#else4. #if/#elseif/#else- : # ifififif ( ) # elseifelseifelseifelseif ( ( condition )output * # elseelseelseelse output # endendendend Usage: ?condition C booleantruefalse,nulltrue. ?output CVTL. Examples (showing different operators):Operator NameOperator NameOperator NameOperator Name SymbolSymbolSymbolSymbol AlterAlterAlterAlternative Symbolnative Symbolnative Symbolnative Symbol ExampleExampleExampleExampleEquals Number = eq #if( $foo = 42 )Equals String = eq #if( $foo = bar )Object Equivalence = eq #if( $foo = $bar )Not Equals != ne #if( $foo != $bar )Greater Than gt #if( $foo 42 )Less Than lt #if( $foo = ge #if( $foo = 42 )Less Than or Equal To = le #if( $foo = 42 )Boolean NOT ! not #if( !$foo ) : ? = .toString(). ?else. #if( $foo = $bar)its true!#elseits not!#end3.#foreach3.#foreach3.#foreach3.#foreach- Format: # foreachforeachforeachforeach ($ref$ref$ref$refininininargargargarg)statementstatementstatementstatement# endendendend Usage: ? $ref C . ? arg C : (i.e. object array, collection, or map), an array list, . ?statement C velocity,VTL. #foreach(),: ? : #foreach ( $item in $items ) ? : #foreach ( $item in Not, $my, fault ) ? : #foreach ( $item in 1.3 ) : #foreach( $customer in $customerList ) $velocityCount$customer.Name #end $velocityCount. perties: # Default name of the loop counter # variable reference. = velocityCount# Default starting value of the loop # counter variable reference. directive.foreach.counter.initial.value = 1 - 1: # The maximum allowed number of loops. directive.foreach.maxloops = -14.#include4.#include 4.#include4.#include CCCCVelocityVelocityVelocityVelocity Format: # includeincludeincludeinclude ( ( arg arg2 . argn) ? arg C TEMPLATE_ROOT. Examples: ? : #include( disclaimer.txt,opinion.txt ): ?: #include( $foo,$bar )5.#parse5.#parse 5.#parse5.#parse CCCCVelocityVelocityVelocityVelocity Format: # parseparseparseparse ( arg ) ? arg -TEMPLATE_ROOT. Examples: ? : #parse( lecorbusier.vm ) ? : #parse( $foo ) perties parse_directive.maxdepth in. (The default parse depth is 10.)6.#stop6.#stop 6.#stop6.#stop CCCC Format: # stopstopstopstop Usage: .7.#macro7.#macro 7.#macro7.#macro CCCC(Velocimacro (VM):(Velocimacro (VM):(Velocimacro (VM):(Velocimacro (VM):VTL)VTL)VTL)VTL) Format: # macromacromacromacro ( vmname $arg1 $arg2 $arg3 . $argn ) VM VTL code. # #end#end#end#end ?vmname C VM (#vmname) ? $arg1 $arg2 . C VM. ? VM VTL code. CVTL. ,. #vmname( $arg1 $arg2 ) VM: ? ()Template library: ? Inline: , velocimacro.permissions.allowInline=true .4.Comments4.Comments 4.Comments4.Comments Comments.. Example: # This is a comment.# This is a comment.# This is a comment.# This is a comment.. E