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
<#globalhm=JspTaglibs["/WEB-INF/struts-html.tld"]>
<@hm.formaction="logon.do"method="post">
<inputname="username"type="text"/>
<inputname="password"type="password"/>
<inputtype="submit"name="submit"></button>
</@hm.form>
<@include_pagepath="/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)
protectedTemplateModelcreateModel(ObjectWrapperwrapper,
ServletContextservletContext,
finalHttpServletRequestrequest,
finalHttpServletResponseresponse)throwsTemplateModelException{
try{
AllHttpScopesHashModelparams=newAllHttpScopesHashModel(wrapper,servletContext,request);
//Createhashmodelwrapperforservletcontext(theapplication)
ServletContextHashModelservletContextModel=
(ServletContextHashModel)servletContext.getAttribute(
ATTR_APPLICATION_MODEL);
if(servletContextModel==null)
{
servletContextModel=newServletContextHashModel(this,wrapper);
servletContext.setAttribute(
ATTR_APPLICATION_MODEL,
servletContextModel);
TaglibFactorytaglibs=newTaglibFactory(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));
//Createhashmodelwrapperforsession
HttpSessionHashModelsessionModel;
HttpSessionsession=request.getSession(false);
if(session!=null){
sessionModel=(HttpSessionHashModel)session.getAttribute(ATTR_SESSION_MODEL);
if(sessionModel==null||sessionModel.isZombie()){
sessionModel=newHttpSessionHashModel(session,wrapper);
session.setAttribute(ATTR_SESSION_MODEL,sessionModel);
if(!sessionModel.isZombie()){
initializeSession(request,response);
}
}
}
else{
sessionModel=newHttpSessionHashModel(this,request,response,wrapper);
}
params.putUnlistedModel(KEY_SESSION,sessionModel);
//Createhashmodelwrapperforrequest
HttpRequestHashModelrequestModel=
(HttpRequestHashModel)request.getAttribute(ATTR_REQUEST_MODEL);
if(requestModel==null||requestModel.getRequest()!=request)
{
requestModel=newHttpRequestHashModel(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,newIncludePage(request,response));
params.putUnlistedModel(KEY_REQUEST_PRIVATE,requestModel);
//Createhashmodelwrapperforrequestparameters
HttpRequestParametersHashModelrequestParametersModel=
(HttpRequestParametersHashModel)request.getAttribute(
ATTR_REQUEST_PARAMETERS_MODEL);
params.putUnlistedModel(KEY_REQUEST_PARAMETERS,requestParametersModel);
returnparams;
}catch(ServletExceptione){
thrownewTemplateModelException(e);
}catch(IOExceptione){
thrownewTemplateModelException(e);
}
}