Velocity练习：使用vm模板生成最简单的html页面_html/css

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Velocity练习：使用vm模板生成最简单的html页面_html/css_WEB-ITnose

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Jun 21, 2016 am 08:48 AM

这几天要用到Velocity模板引擎去做一些页面，所以学习了下这个工具。我的jdk版本为 1.8.0_25

需要做的准备工作有：

1、建立一个Java工程，需要引用Velocity相关的jar包，这些jar包可从apache.org下载到最新版本。下载地址在：http://velocity.apache.org/download.cgi 。我下载的文件是velocity-tools-2.0.zip，将这些文件导入到项目中，就可以使用Velocity进行编码了。

2、安装Eclipse上的Velocity插件Veloedit。因为googlecode被gfw墙掉了，没有条件的朋友们可以安装网上下载到的离线安装版。这里还有一个需要注意，我的Eclipse版本为 Luna Service Release 1 (4.4.1)，这个版本必须要先利用Eclipse自带的update功能，下载“Elipse Tests, Examples, and Extras”。

建立一个JavaProject，取名VelocityTool，里面新建两个java文件。

其中，VelocityHelper.java包含一个Velocity模板转换工具类，代码如下：

import java.io.File;import java.io.FileWriter;import org.apache.velocity.Template;import org.apache.velocity.VelocityContext;import org.apache.velocity.app.Velocity;import org.apache.velocity.app.VelocityEngine;/** *  * @文件名称 VelocityHelper.java * @文件作者 Tsybius2014 * @创建时间 2016年5月10日 下午2:14:01 */public class VelocityHelper {    /**     *      * @param inputVmFilePath     * @param outputHtmlFilePath     * @param context     * @throws Exception     */    public static void generateHtml(String inputVmFilePath, String outputHtmlFilePath,        VelocityContext context) throws Exception {        try {            Velocity.init();            VelocityEngine engine = new VelocityEngine();            Template template = engine.getTemplate(inputVmFilePath, "gbk");            File outputFile = new File(outputHtmlFilePath);             FileWriter writer = new FileWriter(outputFile);            template.merge(context, writer);            writer.close();        } catch (Exception ex) {            throw ex;        }    }}

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VelocityTool.java中有main函数，代码如下：

import java.util.HashMap;import java.util.Vector;import org.apache.velocity.VelocityContext;/** *  * @文件名称 VelocityTool.java * @文件作者 Tsybius2014 * @创建时间 2016年5月10日 上午10:03:59 */public class VelocityTool {    public static void main(String[] args) {        try {            VelocityContext context= new VelocityContext();            context.put("name", "Kim Jung-un");            context.put("gender", "Male");            context.put("email", "XXX@XXX.gov");            context.put("job", "Chairman of the WPK");            context.put("company", "Workers' Party Of Korea (WPK)");            context.put("address", "XXXXXXXXX, Pyongyang, North Korea");            context.put("portraitPath", "file:///C:/Users/Tsybius/Desktop/kju.jpg");            HashMap<String, String> hashMapContact = new HashMap<String, String>();            hashMapContact.put("Tel", "XXX-XXXXXXXX");            hashMapContact.put("Fax", "XXX-XXXXXXXX");            hashMapContact.put("Mobile", "XXX-XXXX-XXXX");            context.put("contactItems", hashMapContact);            Vector<String> vectorRemark = new Vector<String>();            vectorRemark.add("Kim Jong-un is the Chairman of the Workers' Party of Korea and supreme leader of the Democratic People's Republic of Korea (DPRK), commonly referred to as North Korea.");            vectorRemark.add("Kim is the son of Kim Jong-il (1941–2011) and the grandson of Kim Il-sung (1912–1994).");            vectorRemark.add("Kim obtained two degrees, one in Physics at Kim Il-sung University, and another as an Army officer at the Kim Il-sung Military University.");            vectorRemark.add("Kim was named the World's 46th Most Powerful Person by the Forbes list of The World's Most Powerful People in 2013");            context.put("remarks", vectorRemark);            VelocityHelper.generateHtml(                "velocity_test.vm",                 "C:\\Users\\Tsybius\\Desktop\\output.html",                 context);            System.out.println("生成完毕");        } catch (Exception ex) {            ex.printStackTrace();        }    }}

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模板velocity_test.vm是一个存储着人物通讯录的模板，代码如下：

#set($docDesc="VelocityTest")#set($docAuthor="Tsybius2014")#set($docDateTime="2016-05-10 14:29:04")#set($docRemark="none")<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />  <style type="text/css">  </style>  <head>    <title>$!{name}</title>  </head>  <body>    <table width="100%">      <tr>        <!-- Title -->        <td align="center"><b>Address Book - $!{name}</b></td>      </tr>      <tr>        <!-- BaseInfo -->        <td>          <table width="100%" height="100%">            <tr>              <td width="10%">Name:</td>              <td width="30%">$!{name}</td>              <td width="10%">Gender:</td>              <td width="30%">$!{gender}</td>              <td width="20%" rowspan="4">                <img  src="/static/imghw/default1.png"  data-src="$!{portraitPath}"  class="lazy"    style="max-width:90%"  style="max-width:90%"/ alt="Velocity练习：使用vm模板生成最简单的html页面_html/css_WEB-ITnose" >              </td>            </tr>            <tr>              <td width="10%">E-mail:</td>              <td width="30%">$!{email}</td>              <td width="10%">Job:</td>              <td width="30%">$!{job}</td>            </tr>            <tr>              <td width="10%">Company:</td>              <td width="70%" colspan="3">$!{company}</td>            </tr>            <tr>              <td width="10%">Address:</td>              <td width="70%" colspan="3">$!{address}</td>            </tr>          </table>        </td>      </tr>      <tr>        <!-- Contact -->        <td>          <table width="100%" height="100%" >            <tr>              <td width="10%" align="left" valign="top">                Contact:              </td>              <td>                <table width="100%" height="100%" >                  <tr>                    <th></th>                    <th align="left">Contact Type</th>                    <th align="left">Contact Code</th>                    <th></th>                  </tr>                  #foreach($contactItem in $contactItems.entrySet())                    <tr>                      <td align="left" width="5%">$velocityCount</td>                      <td align="left" width="20%">$contactItem.key</td>                      <td align="left" width="30%">$contactItem.value</td>                      <td></td>                    </tr>                  #end                 </table>              </td>            </tr>          </table>        </td>      </tr>      <tr>        <!-- Remarks-->        <td>          <table width="100%" height="100%" >            <tr>              <td width="10%" align="left" valign="top">                Remark:              </td>              <td>                <table width="100%" height="100%" >                  #foreach($remark in $remarks)                    <tr>                      <td>[$velocityCount] $remark</td>                    </tr>                  #end                 </table>              </td>            </tr>          </table>        </td>      </tr>    </table>  </body></html>

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以JavaApplication的方式运行本工程后，生成的HTML页面output.html如下：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">  <meta http-equiv="Content-Type" content="text/html;charset=utf-8" />  <style type="text/css">  </style>  <head>    <title>Kim Jung-un</title>  </head>  <body>    <table width="100%">      <tr>        <!-- Title -->        <td align="center"><b>Address Book - Kim Jung-un</b></td>      </tr>      <tr>        <!-- BaseInfo -->        <td>          <table width="100%" height="100%">            <tr>              <td width="10%">Name:</td>              <td width="30%">Kim Jung-un</td>              <td width="10%">Gender:</td>              <td width="30%">Male</td>              <td width="20%" rowspan="4">                <img  src="/static/imghw/default1.png"  data-src="file:///C:/Users/Tsybius/Desktop/kju.jpg"  class="lazy"    style="max-width:90%"  style="max-width:90%"/ alt="Velocity练习：使用vm模板生成最简单的html页面_html/css_WEB-ITnose" >              </td>            </tr>            <tr>              <td width="10%">E-mail:</td>              <td width="30%">kim001@northkorea.gov</td>              <td width="10%">Job:</td>              <td width="30%">Chairman of the WPK</td>            </tr>            <tr>              <td width="10%">Company:</td>              <td width="70%" colspan="3">Workers' Party Of Korea (WPK)</td>            </tr>            <tr>              <td width="10%">Address:</td>              <td width="70%" colspan="3">The Dark Side Laboratory, Pyongyang, North Korea</td>            </tr>          </table>        </td>      </tr>      <tr>        <!-- Contact -->        <td>          <table width="100%" height="100%" >            <tr>              <td width="10%" align="left" valign="top">                Contact:              </td>              <td>                <table width="100%" height="100%" >                  <tr>                    <th></th>                    <th align="left">Contact Type</th>                    <th align="left">Contact Code</th>                    <th></th>                  </tr>                    <tr>                      <td align="left" width="5%">1</td>                      <td align="left" width="20%">Tel</td>                      <td align="left" width="30%">XXX-XXXXXXXX</td>                      <td></td>                    </tr>                    <tr>                      <td align="left" width="5%">2</td>                      <td align="left" width="20%">Fax</td>                      <td align="left" width="30%">XXX-XXXXXXXX</td>                      <td></td>                    </tr>                    <tr>                      <td align="left" width="5%">3</td>                      <td align="left" width="20%">Mobile</td>                      <td align="left" width="30%">XXX-XXXX-XXXX</td>                      <td></td>                    </tr>                  </table>              </td>            </tr>          </table>        </td>      </tr>      <tr>        <!-- Remarks-->        <td>          <table width="100%" height="100%" >            <tr>              <td width="10%" align="left" valign="top">                Remark:              </td>              <td>                <table width="100%" height="100%" >                  <tr>                    <td>[1] Kim Jong-un is the Chairman of the Workers' Party of Korea and supreme leader of the Democratic People's Republic of Korea (DPRK), commonly referred to as North Korea.</td>                  </tr>                  <tr>                    <td>[2] Kim is the son of Kim Jong-il (1941–2011) and the grandson of Kim Il-sung (1912–1994).</td>                  </tr>                  <tr>                    <td>[3] Kim obtained two degrees, one in Physics at Kim Il-sung University, and another as an Army officer at the Kim Il-sung Military University.</td>                  </tr>                  <tr>                    <td>[4] Kim was named the World's 46th Most Powerful Person by the Forbes list of The World's Most Powerful People in 2013</td>                  </tr>                </table>              </td>            </tr>          </table>        </td>      </tr>    </table>  </body></html>

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使用 Firefox 46.0.1 打开此页面后效果图如下：

（部分内容摘自对应人物的维基百科页面）

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