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1、FreeMarker语法1一、常用语法21、输出${book.name}32、空值判断：${book.name?if_exists},4${book.name?default(‘xxx’)}//默认值有值则输出，没值默认为xxx5${book.name!"xxx"}//默认值xxx63、Date日期格式：${book.date?string('yyyy-MM-dd')}7String的日期格式：${book.date?date('yyyy-mm-dd')}8String的时间格式：${book.date?time('hh-mm-ss')}94、数字格式：${book?string.numbe
2、r}--2010${book?string.currency}--<#--$20.00-->11${book?string.percent}—<#--20%-->125、插入布尔值：13<#assignfoo=true/>//定义一个变量14${foo?string("yes","no")}<#--yes-->1516二、内置方法171、数字型18<#assignanswer=42/>19${answer}20${answer?string}<#--thesameas$...{answer}-->21${answer?string.number}22${answer?string.curre
3、ncy}23${answer?string.percent}2425<#settingnumber_format="0.###E0"/>26${12345?string("0.####E0")}27${answer?string("number")}等同于：${answer?string.number}282、日期型：29预定义格式包括：short，middle和long。30${openingTime?string.short}31${openingTime?string.medium}32${openingTime?string.long}33组合使用：${lastUpdated?str
4、ing.short_long}34${lastUpdated?string("yyyy-MM-ddHH:mm:sszzzz")}353、逻辑型1foo?string2foo?string("yes","no")34、序列的内置方法：4first5last6seq_contains7${x?seq_contains("blue")?string("yes","no")}8seq_index_of9seq_last_index_of10reverse11size12sort13sort_by14多层次的hash排序15<#assignmembers=[{"name":{"first":"Joe"
5、,"last":"Smith"},"age":40},16{"name":{"first":"Fred","last":"Crooger"},"age":35},17{"name":{"first":"Amanda","last":"Fox"},"age":25}]>18Sortedbyname.last:19<#listmembers?sort_by(['name','last'])asm>20-${m.name.last},${m.name.first}:${m.age}yearsold212223chunk：将一个序列分解成几个序列。24<#assignseq=['a'
6、,'b','c','d','e','f','g','h','i','j']>25<#listseq?chunk(4)asrow>26<#listrowascell>${cell}2728<#listseq?chunk(4,'-')asrow>29<#listrowascell>${cell}3031chunk经常用于分栏或者表格输出的格式。325、hash内置方法：33keys：34values：1三、序列2由逗号分隔的变量列表，由方括号限定，类似java中的一维数组3<#assignseq=["winter","spring"
7、,"summer","autumn"]>4<#listseqasx>5${x_index+1}.${x}6<#ifx_has_next>789输出101.winter,112.spring,123.summer,134.autumn1415四、Hashes(散列)16由逗号分隔的键-值列表，由大括号限定，键和值之间用冒号分隔：{"name":"greenmouse","price":150}，
