Freemarker生成静态html示例

import java.io.BufferedWriter;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.io.Writer;import java.util.HashMap;import java.util.Locale;import java.util.Map;import javax.servlet.GenericServlet;import javax.servlet.ServletContext;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.log4j.LogManager;import org.apache.log4j.Logger;import org.apache.struts2.ServletActionContext;import org.apache.struts2.views.JspSupportServlet;import org.apache.struts2.views.freemarker.FreemarkerManager;import com.opensymphony.xwork2.ActionSupport;import com.sz7road.web.common.util.ServiceLocator;import com.sz7road.web.service.TempHtmlService;import freemarker.ext.jsp.TaglibFactory;import freemarker.ext.servlet.HttpRequestHashModel;import freemarker.ext.servlet.ServletContextHashModel;import freemarker.template.Configuration;import freemarker.template.Template;import freemarker.template.TemplateException;public class TempHtmlAction extends ActionSupport {private static final Logger logger = LogManager.getLogger(GeneHtmlFileAction.class);private Configuration freemarker_cfg = null;public String tempIndixHtml(){TempHtmlService tempHtmlService = ServiceLocator.getTempHtmlrService();String sGeneFilePath = "";String sFileName = "index.html";try {Map<String, Object> dataMap = tempHtmlService.createIndex();geneHtmlFile("temp/index.ftl", dataMap, sGeneFilePath, sFileName);} catch (Exception e) {logger.error("Index Html Error:" + e.getMessage(), e);}return SUCCESS;}/** * 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) {File templateFile = new File(ServletActionContext.getServletContext().getRealPath("/") + "WEB-INF/template");freemarker_cfg = new Configuration();try {freemarker_cfg.setDirectoryForTemplateLoading(templateFile);freemarker_cfg.setEncoding(Locale.CHINA, "UTF-8");} catch (IOException e) {logger.error("Get tempalte error", e);}}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<String, Object> 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 = "/var/www/ddtank/web";String sRootDir = ServletActionContext.getRequest().getRealPath("/webpage");try {if (propMap == null) {propMap = new HashMap<String, Object>();}ServletContext servletContext = ServletActionContext.getServletContext();// data.put("JspTaglibs", new TaglibFactory(servletContext));FreemarkerManager freemarkerManager = new FreemarkerManager();Configuration configuration = freemarkerManager.getConfiguration(servletContext);HttpServletRequest request = ServletActionContext.getRequest();HttpServletResponse response = ServletActionContext.getResponse();ServletContextHashModel servletContextModel = (ServletContextHashModel) servletContext.getAttribute(".freemarker.Application");if (servletContextModel == null) {GenericServlet servlet = JspSupportServlet.jspSupportServlet;if (servlet != null) {servletContextModel = new ServletContextHashModel(servlet,configuration.getObjectWrapper());servletContext.setAttribute(".freemarker.Application",servletContextModel);TaglibFactory taglibs = new TaglibFactory(servletContext);servletContext.setAttribute(".freemarker.JspTaglibs",taglibs);}}HttpRequestHashModel requestModel = (HttpRequestHashModel) request.getAttribute(".freemarker.Request");if ((requestModel == null)|| (requestModel.getRequest() != request)) {requestModel = new HttpRequestHashModel(request, response,configuration.getObjectWrapper());request.setAttribute(".freemarker.Request", requestModel);}propMap.put("Application", servletContextModel);propMap.put("Request", requestModel);propMap.put("Session", ServletActionContext.getRequest().getSession());propMap.put("JspTaglibs",new TaglibFactory(ServletActionContext.getServletContext()));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), "UTF-8"));t.process(propMap, out);out.flush();out.close();} 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()) {aFile.mkdirs();}File aSubFile = new File(aParentDir + aSubDir);if (!aSubFile.exists()) {return aSubFile.mkdirs();} else {return true;}}}