动态生成加载ftl模板

最新推荐文章于 2023-11-09 16:15:41 发布

原创最新推荐文章于 2023-11-09 16:15:41 发布 · 3k 阅读

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ftl文件。

jsp:

<% String topMenu = FreeMakerUtil.transformData("topMenu.ftl", rootMap); %>

public class FreeMakerUtil {
private static Logger log = LoggerFactory.getLogger(FreeMakerUtil.class);
private static final String templates = "templates";
private static Configuration cfg = null;
public static final int DEFAULT_WRAPPER = 1;
public static final int BEANS_WRAPPER = 2;
public static final int SIMPLE_WRAPPER = 3;

public static String transformData(String templateName,Object rootMap,int wapperType){
  StringWriter writer = new StringWriter();
  try {
   switch (wapperType) {
   case BEANS_WRAPPER:
    cfg.setObjectWrapper(ObjectWrapper.BEANS_WRAPPER);
    break;
   case SIMPLE_WRAPPER:
    cfg.setObjectWrapper(ObjectWrapper.SIMPLE_WRAPPER);
    break;
   default:
    cfg.setObjectWrapper(ObjectWrapper.DEFAULT_WRAPPER);
    break;
   }
   Template template = cfg.getTemplate(templateName);
   template.process(rootMap, writer);
  } catch (Exception e) {
   log.error("transformData",e);
  }
  return writer.toString();
}
public static String transformData(String templateName,Object rootMap){
  return transformData(templateName,rootMap,DEFAULT_WRAPPER);
}
public static void initConfiguration(){
  URL url = FreeMakerUtil.class.getClassLoader().getResource(templates);
  initConfiguration(url.getPath());
}
public static void initConfiguration(String templatePath){
  try {
   if(cfg==null) cfg = new Configuration();
   cfg.setDirectoryForTemplateLoading(new File(templatePath));
   cfg.setDefaultEncoding("UTF-8");
   cfg.setOutputEncoding("UTF-8");
  } catch (Exception e) {
   log.error("initConfiguration",e);
  }
}
}