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不做��躁的�h — Sat, 28 Apr 2007 03:38:00 GMT

环境�Q��用fm�?.3.9�Q�webwork2.2.4�Q��用切换语法）�Q?br />一�Q�作为components�l��g的参数如果��gؓ字符�Ԍ��则需要在字符串上加上单引受��?br />

${.globals.user} <#-- prints: Big Joe-->
2�Q?strong>Local variables�Q�宏定义body中用local指��o创徏或者替换�?br /> 3�Q�Loop variables:由list指��o产生�?br />

namespaces:
<#import "/lib/my_test.ftl" as my> <#-- the hash called "my" will be the "gate" -->
<@my.copyright date="1999-2002"/>
${my.mail}

讄��命名�I�间里面的变量：<#assign mail="jsmith@other.com" in my>

命名�I�间与数据模型：命名�I�间的ftl可以讉K��数据模型的变量。同样命名空间的变量也会隐藏数据模型中同名的变量�?br />
�I�白问题�Q?br />1�Q�White-space stripping�Q�默认�ؓenabled�Q�清除ftl标记带来的空白以及羃�q�。处理模板的�I�白�?br />2�Q�t, rt, lt指��o�?br />3�Q�ftl的参数strip_text.

用compress directive或者transform来处理输出�?br /><#compress>...�Q�消除空白行�?br /><@compress single_line=true>.../@compress��输出压�~��ؓ一行�?br />
可替换语法：
freemarker可用"["代替"<".在模板的文�g开头加�?strong>[#ftl].

不做��躁的�h 2007-03-27 01:03 发表评论

freemaker学习�W�记--其它内置�Ҏ��

不做��躁的�h — Sun, 25 Mar 2007 16:04:00 GMT

一�Q�数字型
<#assign answer=42/>
${answer}
${answer?string} <#-- the same as ${answer} -->
${answer?string.number}
${answer?string.currency}
${answer?string.percent}

<#setting number_format="0.###E0"/>

${12345?string("0.####E0")}

${answer?string("number")} �{�同于：${answer?string.number}.

二：日期型：
预定义格式包括：short �Q�middle和long�?br />

${openingTime?string.short}
${openingTime?string.medium}
${openingTime?string.long}

�l�合使用�Q?{lastUpdated?string.short_long}
${lastUpdated?string("yyyy-MM-dd HH:mm:ss zzzz")}

三：逻辑�?br />foo?string
foo?string("yes", "no")
四：序列的内�|�方法：
first

last

seq_contains
${x?seq_contains("blue")?string("yes", "no")}

seq_index_of

seq_last_index_of

reverse

size

sort

sort_by
多层�ơ的hash排序

<#assign members = [
    {"name": {"first": "Joe", "last": "Smith"}, "age": 40},
    {"name": {"first": "Fred", "last": "Crooger"}, "age": 35},
    {"name": {"first": "Amanda", "last": "Fox"}, "age": 25}]>
Sorted by name.last:
<#list members?sort_by(['name', 'last']) as m>
- ${m.name.last}, ${m.name.first}: ${m.age} years old

chunk�Q�将一个序列分解成几个序列�?br />
<#assign seq = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j']>

<#list seq?chunk(4) as row>
<#list row as cell>${cell}

<#list seq?chunk(4, '-') as row>
<#list row as cell>${cell}

chunk�l�常用于分栏或者表��D��出的格式�?br />
五：hash内置�Ҏ��Q?br />
keys�Q?br />values�Q?br />
六：很少使用或者专家��的内�|�方法：
byte,double,float,int,long,short�?br />
eval

has_content�Q�变量存在，不是指null也不是空�Ԍ��一般情况下可以使用expr!?size > 0 or expr!?length > 0 代替expr?has_content�?br />
interpret��一个字�W�串解析为ftl模版�Q��生一�?font face="Courier New" color="#a03d10">TemplateTransformModel对象�?br /><#assign x=["a", "b", "c"]>
<#assign templateSource = "<#list x as y>${y}">
<#assign inlineTemplate = templateSource?interpret>
<@inlineTemplate>def/@inlineTemplate

is_...��查变量类型：

Built-in	Returns `true` if the value is a ...
`is_string`	string
`is_number`	number
`is_boolean`	boolean
`is_date`	date (all types: date-only, time-only and date-time)
`is_method`	method
`is_transform`	transform
`is_macro`	macro
`is_hash`	hash
`is_hash_ex`	extended hash (i.e. supports `?keys` and `?values`)
`is_sequence`	sequence
`is_collection`	collection
`is_enumerable`	sequence or collection
`is_indexable`	sequence
`is_directive`	macro or transform
`is_node`	node

namespace�Q�返回宏变量的命名空��_��只能用于宏�?br />
new�Q�创��Z��个TemplateModel实现的变量�?br /><#assign word_wrapp = "com.acmee.freemarker.WordWrapperTransform"?new()>

不做��躁的�h 2007-03-26 00:04 发表评论

不做��躁的�h — Sun, 25 Mar 2007 13:38:00 GMT

一�Q�字�W�串内置�Ҏ��
      substring(from, toExclusive)

   cap_first

   uncap_first

   capitalize

   chop_linebreak

   date, time, datetime:
   <#assign test1 = "10/25/1995"?date("MM/dd/yyyy")>
   <#assign test2 = "15:05:30"?time("HH:mm:ss")>
   <#assign test3 = "1995-10-25 03:05 PM"?datetime("yyyy-MM-dd hh:mm a")>

   ends_with

   html
   < replaced with <
   > replaced with >
   & replaced with &
   " replaced with "

   groups用于matches的结果�?br />
   index_of

   j_string

   js_string

   last_index_of

   length

   lower_case

   left_pad

   right_pad

   contains

   matchs
   �q�回boolean或者sequence�?br />   <#if "fxo"?matches("f.?o")>Matches.<#else>Does not match.
   <#assign res = "foo bar fyo"?matches("f.?o")>
   <#if res>Matches.<#else>Does not match.
   Matching sub-strings:
   <#list res as m>
   - ${m}

   res��是典型的多值类型�?br />
   如果正则表达式包含组�Q�圆括号�Q�，可以通过groups讉K��?br />   <#assign res = "aa/rx; ab/r;"?matches("(\\w[^/]+)/([^;]+);")>
   <#list res as m>
   - ${m} is ${m?groups[1]} per ${m?groups[2]}

   number

   replace

   rtf
   \ replaced with \\   { replaced with \{   } replaced with \}

url
��所有url的保留字�W�进行�{码�?br /> url_escaping_charset

split

starts_with

trim�Q�upper_case。word_list�Q�xml

字符串内�|�方法可以接受的通用标记�Q?br /> i: 大小写不敏感�?br /> f: 只用于第一个，常用于替换，查找�{�，取第一�ơ出�?br /> r: 子串是个正则表达式�?br /> m: 正则表达式的多行模式�?br /> s: 单行模式�?br /> c: 允许�I�白或注释在正则表达式中�?br /><#assign s = 'foo bAr baar'>
${s?replace('ba', 'XY')}
i: ${s?replace('ba', 'XY', 'i')}
if: ${s?replace('ba', 'XY', 'if')}
r: ${s?replace('ba*', 'XY', 'r')}
ri: ${s?replace('ba*', 'XY', 'ri')}
rif: ${s?replace('ba*', 'XY', 'rif')}

Built-in	`i`	`r`	`m`	`s`	`c`	`f`
`replace`	Yes	Yes	Only with `r`	Only with `r`	Only with `r`	Yes
`split`	Yes	Yes	Only with `r`	Only with `r`	Only with `r`	No
`match`	Yes	No	Yes	Yes	Yes	No

不做��躁的�h 2007-03-25 21:38 发表评论

freemaker学习�W�记--�~�码指导

不做��躁的�h — Sun, 25 Mar 2007 13:38:00 GMT

1、配�|�对象：
Configuration cfg = new Configuration();
cfg.setDirectoryForTemplateLoading(new File("/where/you/store/templates"));
cfg.setObjectWrapper(new DefaultObjectWrapper());

2�Q�得到模板对象：
Template temp = cfg.getTemplate("test.ftl");
Configuration对Template对象�q�行�~�存�?br />
3�Q�合�q�模板和数据模型�Q?br />Writer out = new OutputStreamWriter(System.out);
temp.process(root, out);
out.flush();

4�Q�数据模型：
      ��M��模板要��用的数据模型都是通过object wrapping��传入的对象包装成实�?/strong>TemplateModel接口的对象�?br />      TemplateModel提供几个下��接口�Q?font face="Courier New" color="#a03d10">TemplateSequenceModel�{��?/font>

5�Q�单值模型：Scalars
      Boolean
      Number
      String
      Date

Template Type Model
6�Q�方法   �?br />public class IndexOfMethod implements TemplateMethodModel {

    public TemplateModel exec(List args) throws TemplateModelException {
        if (args.size() != 2) {
            throw new TemplateModelException("Wrong arguments");
        }
        return new SimpleNumber(
            ((String) args.get(1)).indexOf((String) args.get(0)));
    }
}

root.put("indexOf", new IndexOfMethod());

<#assign x = "something">
${indexOf("met", x)}
${indexOf("foo", x)}

7�Q�Transforms
   import java.io.*;
import java.util.*;
import freemarker.template.TemplateTransformModel;

class UpperCaseTransform implements TemplateTransformModel {

    public Writer getWriter(Writer out, Map args) {
        return new UpperCaseWriter(out);
    }

    private class UpperCaseWriter extends Writer {

        private Writer out;

        UpperCaseWriter (Writer out) {
            this.out = out;
        }

        public void write(char[] cbuf, int off, int len)
                throws IOException {
            out.write(new String(cbuf, off, len).toUpperCase());
        }

        public void flush() throws IOException {
            out.flush();
        }

        public void close() {
        }
    }
}

root.put("upperCase", new UpperCaseTransform());

<@upperCase>
blah2
blah3

8�Q�访问freemarker的环境变量：Environment.getCurrentEnvironment().

9�Q�共享变量是指所有模杉K��能访问的变量�Q�在configuration中设�|��?br />      cfg.setSharedVariable("to_upper", new UpperCaseTransform());
      cfg.setSharedVariable("company", "Foo Inc.");

      数据模型中的变量��会隐藏同名的共享变量�?br />
      TemplateModel的实��C��是线层安全的�Q�因此不能用于共享变量�?br />
      预置�׃�n变量�Q?br />
name
class
capture_output
freemarker.template.utility.CaptureOutput
compress
freemarker.template.utility.StandardCompress
html_escape
freemarker.template.utility.HtmlEscape
normalize_newlines
freemarker.template.utility.NormalizeNewlines
xml_escape
freemarker.template.utility.XmlEscape

10�Q�设�|�层�ơ：configuration, template, runtime environment



不做��躁的�h 2007-03-25 21:38 发表评论

name	class
`capture_output`	`freemarker.template.utility.CaptureOutput`
`compress`	`freemarker.template.utility.StandardCompress`
`html_escape`	`freemarker.template.utility.HtmlEscape`
`normalize_newlines`	`freemarker.template.utility.NormalizeNewlines`
`xml_escape`	`freemarker.template.utility.XmlEscape`