`

freemarker实例

freemarkerApacheJSPServletHTML 
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<html>
<head>

<title>查看文章: ${newsitem.title} </title>
</head>

<body>
<table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr><td>
<table width="95%" border="0" align="center" cellpadding="2" cellspacing="6" >
 <tr>
      <td height="10" align="left" colspan=2 ></td>
    </tr>
    <tr>
        <td align="left" width="538" >
        <strong>${newsitem.title}</strong> ( ${newsitem.addtime} )
          </td>
          <td align="right">
   <a href="index.jsp">返回</a>
   &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
          </td>
    </tr>
    <tr>                     
         <td align="left" valign=top colspan=2>
         <hr align="left"  width="95%" size="1" noshade color="#cc0000" >
         </td>
    </tr>
    <tr>                     
      <td colspan=2>${newsitem.showContent}
   </td>
    </tr>
</table>           
           
<br>
</td></tr>
</table>
</body>

</html>

 


代码: 
 
import java.io.*;
import java.util.HashMap;
import java.util.Map;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import freemarker.template.*;
/*
* Created on 2005-4-7
 *
 */
 
/**
 * 测试FreeMarker.
 *
 * @author scud
 *
 */
public class FreeMarkerTest
{
 
        private final Log logger = LogFactory.getLog(getClass());
       
        private Configuration freemarker_cfg = null;
       
       
       
        public static void main(String[] args)
        {
            //@todo 自己的一个类
            NewsItem aItem = null;
           
            //@todo 装入新闻
            //NewsItem = loadNewsItem(1);
               
            FreeMarkerTest test = new FreeMarkerTest();
           
            Map root = new HashMap();
            root.put("newsitem", aItem);
 
            String sGeneFilePath = "/tpxw/";
           
            String sFileName = "1.htm";
 
            boolean bOK = test.geneHtmlFile("/tpxw/view.ftl",root, sGeneFilePath,sFileName);
           
        }
       
 
        /**
         * 获取freemarker的配置. freemarker本身支持classpath,目录和从ServletContext获取.
         */
        protected Configuration getFreeMarkerCFG()
        {
            if (null == freemarker_cfg)
            {
                // Initialize the FreeMarker configuration;
                // - Create a configuration instance
                freemarker_cfg = new Configuration();
 
                // - FreeMarker支持多种模板装载方式,可以查看API文档,都很简单:路径,根据Servlet上下文,classpath等等
               
                //htmlskin是放在classpath下的一个目录
                freemarker_cfg.setClassForTemplateLoading(this.getClass(), "/htmlskin");
            }
           
            return freemarker_cfg;
        }
 
        /**
         * 生成静态文件.
         *
         * @param templateFileName 模板文件名,相对htmlskin路径,例如"/tpxw/view.ftl"
         * @param propMap 用于处理模板的属性Object映射
         * @param htmlFilePath 要生成的静态文件的路径,相对设置中的根路径,例如 "/tpxw/1/2005/4/"
         * @param htmlFileName 要生成的文件名,例如 "1.htm"
         */
        public boolean geneHtmlFile(String templateFileName,Map propMap, String htmlFilePath,String htmlFileName )
        {
               //@todo 从配置中取得要静态文件存放的根路径:需要改为自己的属性类调用
            String sRootDir = "e:/webtest/htmlfile" ;
           
            try
            {
                Template t = getFreeMarkerCFG().getTemplate(templateFileName);
 
                //如果根路径存在,则递归创建子目录
                creatDirs(sRootDir,htmlFilePath);
               
                File afile = new File(sRootDir +"/" +htmlFilePath + "/" + htmlFileName);
 
                Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(afile)));
 
                t.process(propMap, out);
            }
            catch (TemplateException e)
            {
                logger.error("Error while processing FreeMarker template " + templateFileName,e);
                return false;
            }
            catch (IOException e)
            {
                logger.error("Error while generate Static Html File " + htmlFileName,e);
                return false;
            }
 
            return true;
        }
       
       
 
        /**
         * 创建多级目录
         *
         * @param aParentDir String
         * @param aSubDir  以 / 开头
         * @return boolean 是否成功
         */
        public static boolean creatDirs(String aParentDir, String aSubDir)
        {
            File aFile = new File(aParentDir);
            if (aFile.exists())
            {
                File aSubFile = new File(aParentDir + aSubDir);
                if (!aSubFile.exists())
                {
                    return aSubFile.mkdirs();
                }
                else
                {
                    return true;
                }
            }
            else
            {
                return false;
            }
        }   

}

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