在velocity使用toolbox.xml

发布时间：2020-12-16 05:56:00 所属栏目：百科来源：网络整理

导读：首先必须在web.xml中添加： init-param param-nameorg.apache.velocity.toolbox/param-name param-value/WEB-INF/toolbox.xml/param-value /init-param 才可以使用toolbox.xml中定义的变量。举例说明用法比如我要使用日期，可以如下定义： toolbox tool ke

首先必须在web.xml中添加：
<init-param>
<param-name>org.apache.velocity.toolbox</param-name>
<param-value>/WEB-INF/toolbox.xml</param-value>
</init-param>
才可以使用toolbox.xml中定义的变量。

举例说明用法
比如我要使用日期，可以如下定义：
<toolbox>
<tool>
<key>date</key>
<scope>application</scope>
<class>org.apache.velocity.tools.generic.DateTool</class>
<parameter name="format" value="yyyy-M-d"/>
</tool>
</toolbox>
这里DateTool是velocity为我们预定义的工具类，还有很多其他工具类（比如：MathTool，ListTool，SortTool...）
date是这个类的实例，这样我们就可以在.vm中使用$date来引用DateTool中的方法了，如 $date.get('yyyy-M-d H:m:s')
如果我们要使用自己的类，只需要把org.apache.velocity.tools.generic.DateTool这部分替换成自己定义的类，然后再初始化该类的实例，比如<key>class</key>
在.vm中这样用$class.getXXX()
toolbox.xml典型配置：

    Java代码 
    
  
 <?xmlversion="1.0"encoding="UTF-8"?>
 <!--
 =============================================================
 @(#)toolbox.xml
 
 Copyright(c)2005,HOBOKENProject,AllRightsReserved.
 -->
 <toolbox>
 <!--[DateTool]
 @seehttp://www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/generic/DateTool.html(ja)
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/DateTool.html(en)
@sinceVelocityTools1.0
 <tool>
 <key>date</key>
 <scope>application</scope>
 <class>org.apache.velocity.tools.generic.DateTool</class>
 </tool>
 <!--[MathTool]
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/generic/MathTool.html(ja)
//velocity.apache.org/tools/devel/generic/MathTool.html(en)
 <key>math</key>
class>org.apache.velocity.tools.generic.MathTool</ <!--[NumberTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/NumberTool.html(en)
1.2
 <key>number</key>
class>org.apache.velocity.tools.generic.NumberTool</ <!--[RenderTool]
//velocity.apache.org/tools/devel/generic/RenderTool.html(en)
 <key>render</key>
class>org.apache.velocity.tools.generic.RenderTool</ <!--[EscapeTool]
//velocity.apache.org/tools/devel/generic/EscapeTool.html(en)
 <key>esc</key>
class>org.apache.velocity.tools.generic.EscapeTool</ <!--[ResourceTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/ResourceTool.html(en)
@sinceVelocity1.3
 <key>text</key>
class>org.apache.velocity.tools.generic.ResourceTool</ <parametername="bundles"value="resources,prj.hoboken.patrasche.resources.PatrascheResources"/>
 <parametername="locale"value="ja_JP"/>
 <!--[AlternatorTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/AlternatorTool.html(en)
 <key>alternator</key>
class>org.apache.velocity.tools.generic.AlternatorTool</ <!--[ValueParser]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/ValueParser.html(en)
 <key>parser</key>
class>org.apache.velocity.tools.generic.ValueParser</ <!--[ListTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/ListTool.html(en)
 <key>list</key>
class>org.apache.velocity.tools.generic.ListTool</ <!--[SortTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/SortTool.html(en)
 <key>sorter</key>
class>org.apache.velocity.tools.generic.SortTool</ <!--[IteratorTool]
//velocity.apache.org/tools/devel/javadoc/org/apache/velocity/tools/generic/IteratorTool.html(en)
 <key>mill</key>
 <scope>request</scope>
class>org.apache.velocity.tools.generic.IteratorTool</ ============================================================
 [TOOLFORSTRUTSTAGLIB]
 <!--[ActionMessagesTool]　
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/ActionMessagesTool.html(ja)
//velocity.apache.org/tools/devel/struts/ActionMessagesTool.html(en)
1.1
 <key>messages</key>
class>org.apache.velocity.tools.struts.ActionMessagesTool</ <!--[ErrorsTool]
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/ErrorsTool.html(ja)
//velocity.apache.org/tools/devel/struts/ErrorsTool.html(en)
 <key>errors</key>
class>org.apache.velocity.tools.struts.ErrorsTool</ <!--[FormTool]
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/FormTool.html(ja)
//velocity.apache.org/tools/devel/struts/FormTool.html(en)
 <key>form</key>
class>org.apache.velocity.tools.struts.FormTool</ <!--[MessageTool]
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/MessageTool.html(ja)
//velocity.apache.org/tools/devel/struts/MessageTool.html(en)
 <key>resource</key>
class>org.apache.velocity.tools.struts.MessageTool</ <!--[StrutsLinkTool]
 LinkTool
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/StrutsLinkTool.html(ja)
//velocity.apache.org/tools/devel/struts/StrutsLinkTool.html(en)
 <key>slink</key>
class>org.apache.velocity.tools.struts.StrutsLinkTool</ <!--[SecureLinkTool]
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/SecureLinkTool.html(ja)
//velocity.apache.org/tools/devel/struts/SecureLinkTool.html(en)
 <key>sslink</key>
class>org.apache.velocity.tools.struts.SecureLinkTool</ <!--[TilesTool]
 Tiles
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/TilesTool.html(ja)
//velocity.apache.org/tools/devel/struts/TilesTool.html(en)
 <key>tiles</key>
class>org.apache.velocity.tools.struts.TilesTool</ <!--[ValidatorTool]
 Validator
//www.jajakarta.org/velocity/tools/velocity-tools-1.1/docs-ja/struts/ValidatorTool.html(ja)
//velocity.apache.org/tools/devel/struts/ValidatorTool.html(en)
 <key>validator</key>
class>org.apache.velocity.tools.struts.ValidatorTool</ <datatype="string">
 <key>app_version</key><value>3.0</value>
 </data>
 <key>app_name</key><value>Patrasche</value>
 <key>next</key><value>/images/icon/next.jpg</value>
 <key>prev</key><value>/images/icon/prev.jpg</value>
 <key>top-page</key><value>/images/icon/top-page.jpg</value>
 <key>last-page</key><value>/images/icon/last-page.jpg</value>
 <key>pageIcon</key><value>/images/icon/page.png</value>
 <key>bookIcon</key><value>/images/icon/book.png</value>
 <key>defaultStyle</key><value>./web/default.css</value>
 <key>errorMetaHeader</key><value>/error/default_header.vm</value>
 <key>errorStyle</key><value>/error/error.css</value>
 <key>detailOfHTTP</key><value>./error/detail_HttpError.vm</value>
 <key>detailOfSERV</key><value>./error/detail_ServerError.vm</value>
 <key>multiPart</key><value>enctype='multipart/form-data'</value>
 <key>parentMark</key><value>..</value>
 <key>chartToolTips</key><value>toolTips</value>
 <key>chartClickable</key><value>isClickable</value>
 <!--[NullTool]
 <key>null</key>
class>com.company.util.velocity.NullTool</ <!--[StringTool]
 文字操作
 <key>words</key>
class>com.company.util.velocity.StringTool</ <!--[PageScrolllTool]
 <key>pager</key>
 <scope>session</scope>
class>com.company.util.velocity.PageScrollTool</ <!--[LoginUserTool]
 <key>loginuser</key>
class>com.company.util.velocity.LoginUserTool</ <!--[MenuTool]
 <key>menuviewer</key>
class>com.company.util.velocity.MenuTool</ <!--[FileSystemTool]
 <key>filesys</key>
class>com.company.util.velocity.contrib.FileSystemTool</ <!--[ExceptionTool]
 <key>exception</key>
class>com.company.util.velocity.ExceptionTool</ <!--[POITool]
 使用自己写的操作Excel的类
 <key>poi</key>
class>com.company.util.velocity.POITool</ <!--[ConstantTool]
 使用自己定义的常量。
 <key>constant</key>
class>com.company.Constant</ </toolbox> 

（编辑：李大同）

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