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);
request.setAttribute(
ATTR_REQUEST_PARAMETERS_MODEL,
createRequestParametersHashModel(request));
}
params.putUnlistedModel(KEY_REQUEST, requestModel);
params.putUnlistedModel(KEY_INCLUDE, new IncludePage(request, response));
params.putUnlistedModel(KEY_REQUEST_PRIVATE, requestModel);
// Create hash model wrapper for request parameters
HttpRequestParametersHashModel requestParametersModel =
(HttpRequestParametersHashModel) request.getAttribute(
ATTR_REQUEST_PARAMETERS_MODEL);
params.putUnlistedModel(KEY_REQUEST_PARAMETERS, requestParametersModel);
return params;
} catch (ServletException e) {
throw new TemplateModelException(e);
} catch (IOException e) {
throw new TemplateModelException(e);
}
}