日期:2014-05-16  浏览次数:20357 次

freemarker 使用jsp标签

freemarker 可以使用jsp标签,但只有你用了他的 freemarkerservlet,这个功能才能有效。如果你想生成静态文件那么这样就不行了

使用jsp标签的方法? 使用心得
??? <#global hm=JspTaglibs["/WEB-INF/struts-html.tld"]>
?? <@hm.form action="logon.do" method="post">
????????? <input name="username" type="text" />
????????? <input name="password" type="password"/>
????????? <input type="submit" name="submit"></button>
????? </@hm.form>
????? <@include_page path= "/error.jsp"/>

可以这样来支持jsp标签
也可以支持jsp:include 这个标签??
其本质是在model中添加了 对jsptaglibs和tabinclude 的标记
这是 freemarkerservlet 中 对templateModel的初始化? 从以下红色代码可以看出,想要自己处理jsptaglibs 而不去调用它的servlet 只需要在自己的model中添加上这个值对就可以了,应用环境? servlet
需 要注意的一个问题? 使用include这个标签是 由于传入的是request和response这两个参数,include来的内容会写入到response中,而不是自己指定的out中,所以这部分可 能需要进行一些修改,如果只是其用来做表示层 那么很容易(本来就是这么做的)

protected TemplateModel createModel(ObjectWrapper wrapper,
??????????????????????????????????????? ServletContext servletContext,
??????????????????????????????????????? final HttpServletRequest request,
??????????????????????????????????????? final HttpServletResponse response) throws TemplateModelException {
??????? try {
??????????? AllHttpScopesHashModel params = new AllHttpScopesHashModel(wrapper, servletContext, request);
???
??????????? // Create hash model wrapper for servlet context (the application)
??????????? ServletContextHashModel servletContextModel =
??????????????? (ServletContextHashModel) servletContext.getAttribute(
??????????????????? ATTR_APPLICATION_MODEL);
??????????? if (servletContextModel == null)
??????????? {
??????????????? servletContextModel = new ServletContextHashModel(this, wrapper);
??????????????? servletContext.setAttribute(
??????????????????? ATTR_APPLICATION_MODEL,
??????????????????? servletContextModel);
??????????????? TaglibFactory taglibs = new TaglibFactory(servletContext);
??????????????? servletContext.setAttribute(
??????????????????? ATTR_JSP_TAGLIBS_MODEL,
??????????????????? taglibs);
??????????????? initializeServletContext(request, response);
??????????? }
??????????? params.putUnlistedModel(KEY_APPLICATION, servletContextModel);
??????????? params.putUnlistedModel(KEY_APPLICATION_PRIVATE, servletContextModel);
??????????? params.putUnlistedModel(KEY_JSP_TAGLIBS, (TemplateModel)servletContext.getAttribute(ATTR_JSP_TAGLIBS_MODEL));
??????????? // Create hash model wrapper for session
??????????? HttpSessionHashModel sessionModel;
??????????? HttpSession session = request.getSession(false);
??????????? if(session != null) {
??????????????? sessionModel = (HttpSessionHashModel) session.getAttribute(ATTR_SESSION_MODEL);
??????????????? if (sessionModel == null || sessionModel.isZombie()) {
??????????????????? sessionModel = new HttpSessionHashModel(session, wrapper);
??????????????????? session.setAttribute(ATTR_SESSION_MODEL, sessionModel);
??????????????????? if(!sessionModel.isZombie()) {
??????????????????????? initializeSession(request, response);
??????????????????? }
??????????????? }
??????????? }
??????????? else {
??????????????? sessionModel = new HttpSessionHashModel(this, request, response, wrapper);
??????????? }
??????????? params.putUnlistedModel(KEY_SESSION, sessionModel);
???
??????????? // Create hash model wrapper for request
??????????? HttpRequestHashModel requestModel =
??????????????? (HttpRequestHashModel) request.getAttribute(ATTR_REQUEST_MODEL);
??????????? if (requestModel == null || requestModel.getRequest() != request)
??????????? {
??????????????? requestModel = new HttpRequestHashModel(request, response, wrapper);
??????????????? request.setAttribute(ATTR_REQUEST_MODEL, requestModel);