JBuilder中的velocity应用

最新推荐文章于 2025-08-11 16:23:40 发布

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#velocity #jbuilder #xhtml #servlet #string #date

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本文介绍了如何在JBuilder项目中集成Velocity，包括引入必要的库文件，配置web.xml，设置Toolbox.xml以及Velocity.properties，以实现动态网页的生成。通过这些配置，可以使用Velocity模板来创建和渲染视图。

导入库

velocity-dep-1.4.jar和velocity-tools-view-1.1.jar

修改web.xml

加入以下代码

<web-app>
<servlet>
    <servlet-name>velocity</servlet-name>
    <servlet-class>
        org.apache.velocity.tools.view.servlet.VelocityViewServlet
    </servlet-class>
    <init-param>
      <param-name>org.apache.velocity.toolbox</param-name>
      <param-value>/WEB-INF/toolbox.xml</param-value>
    </init-param>
    <load-on-startup>10</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>velocity</servlet-name>
    <url-pattern>*.vm</url-pattern>
</servlet-mapping>
<welcome-file-list>
    <welcome-file>index.vm</welcome-file>
</welcome-file-list>
</web-app>

Toolbox.xml

<?xml version="1.0"?>
<toolbox>
<xhtml>true</xhtml>
<tool>
    <key>toytool</key>
    <class>ToyTool</class>
</tool>
<data type="number">
    <key>version</key>
    <value>1.1</value>
</data>
<data type="boolean">
    <key>isSimple</key>
    <value>true</value>
</data>
<data type="string">
    <key>foo</key>
    <value>this is foo.</value>
</data>
<data type="string">
    <key>bar</key>
    <value>this is bar.</value>
</data>
<tool>
    <key>map</key>
    <class>java.util.HashMap</class>
</tool>
<tool>
    <key>date</key>
    <scope>application</scope>
    <class>org.apache.velocity.tools.generic.DateTool</class>
</tool>
<tool>
    <key>link</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.StrutsLinkTool</class>
</tool>
<tool>
    <key>msg</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.MessageTool</class>
</tool>
<tool>
    <key>errors</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.ErrorsTool</class>
</tool>
<tool>
    <key>form</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.FormTool</class>
</tool>
<tool>
    <key>tiles</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.TilesTool</class>
</tool>
<tool>
    <key>validator</key>
    <scope>request</scope>
    <class>org.apache.velocity.tools.struts.ValidatorTool</class>
</tool>
</toolbox>

配置文件Velocity.properties

velocimacro.library = /WEB-INF/VM_global_library.vm
velocimacro.permissions.allow.inline = true
velocimacro.permissions.allow.inline.to.replace.global = false
velocimacro.permissions.allow.inline.local.scope = false
velocimacro.context.localscope = false

编写vm.html

<html>
<body>
I'm a velocity template.

#if( $XHTML )
#set( $br = "<br />" )
#else
#set( $br = "<br>" )
#end

$br
$br

Here we use a custom tool: $toytool.message

$br
$br

Here we get the date from the DateTool: $date.medium
</body>
</html>