freemarker 生成靜態文件

生成靜態文件的類：
// 加載模版目錄，FreeMarker支持多種模板裝載方式,可以查看API文檔,都很簡單:路徑,根據Servlet上下文,classpath等等
freemarkerCfg.setServletContextForTemplateLoading(context, "/ftl");              //WebRoot下的ftl目錄，放freemarker的模板
freemarkerCfg.setClassForTemplateLoading(CreateHtmlPage.class, "/htmlskin");   //htmlskin是放在classpath下的一個目錄
freemarkerCfg.setDirectoryForTemplateLoading(new File("/where/you/store/templates"));

package pagehtml;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Locale;
import java.util.Map;

import javax.servlet.ServletContext;

import freemarker.template.Configuration;
import freemarker.template.Template;

public class CreateHtmlPage {
	/**
	 * 生成靜態頁面主方法
	 * 
	 * @param context
	 *            ServletContext
	 * @param data
	 *            一個Map的數據結果集
	 * @param templatePath
	 *            ftl模版路徑
	 * @param targetHtmlPath
	 *            生成靜態頁面的路徑
	 */

	public static void crateHTML(ServletContext context, Map<String, Object> data, String templatePath, String targetHtmlPath) {
		Configuration freemarkerCfg = new Configuration();
		// 加載模版
		freemarkerCfg.setServletContextForTemplateLoading(context, "/ftl");
		freemarkerCfg.setEncoding(Locale.getDefault(), "UTF-8");
		try {
			// 指定模版目錄
			Template template = freemarkerCfg.getTemplate(templatePath, "UTF-8");
			template.setEncoding("UTF-8");
			// 靜態頁面路徑
			String htmlPath = context.getRealPath("/html") + "/" + targetHtmlPath;
			File htmlFile = new File(htmlPath);
			Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(htmlFile), "UTF-8"));
			// 處理模版
			template.process(data, out);
			out.flush();
			out.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * 生成類型列表靜態頁
	 * 
	 * @param context
	 * @param data
	 */
	public static void createIndexFriendLink(ServletContext context, Map<String, Object> data) {
		crateHTML(context, data, "/categorylist.ftl", "categorylist.html");
	}

	

}

/**
	 * 生成友情鏈接靜態頁html
	 * 
	 * @return
	 */
	public ActionForward createViewHtml(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
		try {
			// 獲取頁面表單提交的值
			CategoryForm categForm = (CategoryForm) form;
			Category category = new Category();
			BeanUtils.copyProperties(category, categForm);

			// 調用業務邏輯操作
			TableManagerFactory tableManagerFactory = new TableManagerFactory();
			ITableManager manager = (ITableManager) tableManagerFactory.createTableDao("jdbc.CategoryDao");
			category = (Category) manager.view(category);

			// 準備數據
			HashMap<String, Object> data = new HashMap<String, Object>();
			data.put("category", category);
			// 調用靜態頁面方法
			ServletContext context = request.getSession().getServletContext(); 
			CreateHtmlPage.createIndexFriendLink(context, data);
			return mapping.findForward("viewlisthtml");
		} catch (Exception e) {
			e.printStackTrace();
			return mapping.findForward("viewlisthtml");
		}
	}