解决sitemesh3装饰页面不能使用freemarker标签问题 – 承影剑

如题,这个问题其实在sitemesh2中已经很好的解决了,不过在sitemesh3中可能没有解决,所以要自己写代码解决了,下面我先讲下sitemesh2是如何解决的:

<servlet>
<servlet-name>sitemesh-freemarker<rvlet-name>
<servlet-class>com.opensymphony.module.sitemesh.freemarker.FreemarkerDecoratorServlet</servlet-class>
<init-param>
<param-name>TemplatePath</param-name>
<param-value>/</param-value>
</init-param>
<init-param>
<param-name>default_encoding</param-name>
<param-value>utf-8</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<rvlet>

<servlet-mapping>
<servlet-name>sitemesh-freemarker<rvlet-name>
<url-pattern>*.ftl</url-pattern>
<rvlet-mapping>

如此解决了问题,那么sitemesh3是如何解决的呢?刚开始以为只要添加了sitemesh3和freemarker相关的配置就可以了,也许我太天真了,不过还好在网上搜索到了牛了已经解决了这个问题,只要按照他讲的解决就可以了,不过好像就他一个人解决这个问题,其它人没有遇到这个问题需要解决的吗?难道你们项目中没有用到sitemesh和freemarker?这篇文章是这样做的:

<filter>
<filter-name>freemarkerFilter</filter-name>
<filter-class>org.adaikiss.kay.web.FreemarkerFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>freemarkerFilter</filter-name>
<url-pattern>*.ftl</url-pattern>
<dispatcher>REQUEST</dispatcher>
<dispatcher>FORWARD</dispatcher>
</filter-mapping>

然后再添加org.adaikiss.kay.web.FreemarkerFilter类

package org.adaikiss.kay.web;

import java.io.IOException;
import java.util.Locale;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.context.ApplicationContext;
import org.springframework.util.StringUtils;
import org.springframework.web.context.support.WebApplicationContextUtils;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver;

/**
* Application Lifecycle Listener implementation class FreemarkerFilter
*
*/
public class FreemarkerFilter implements Filter {

private Locale locale;

private ApplicationContext ctx;

@Override
public void init(FilterConfig filterConfig) throws ServletException {
String localeStr
= filterConfig.getInitParameter(“locale”);
if(StringUtils.hasText(localeStr)){
locale
= new Locale(localeStr);
}
else {
locale
= Locale.getDefault();
}
}

@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
HttpServletRequest req
= (HttpServletRequest)request;
HttpServletResponse res
= (HttpServletResponse)response;
if(ctx == null){
ctx
= WebApplicationContextUtils.getRequiredWebApplicationContext(req.getSession().getServletContext());
if(null == ctx){
throw new ExceptionInInitializerError(“spring context is not loaded!”);
}
}
try {
String name
= req.getRequestURI();
name
= name.substring(1, name.lastIndexOf(“.ftl”));
FreeMarkerViewResolver viewResolver
= ctx.getBean(FreeMarkerViewResolver.class);
System.out.println(
“zzz:”+name);
System.out.println(
“zzz:”+locale);
View view
= viewResolver.resolveViewName(name, locale);
// @SuppressWarnings(“unchecked”)
// Map<String, Object> model = (Map<String, Object>) request.getAttribute(ViewRendererServlet.MODEL_ATTRIBUTE);
view.render(null, req, res);
}
catch (Exception e) {
throw new ServletException(e);
}
}

@Override
public void destroy() {
// TODO Auto-generated method stub

}

}

他先是在web.xml里面添加这个类的servlet的配置,然后再新建这个类,至于这个类的作用你们还是自己看看吧,我也在学习。完整的下载地址在这,有需要的就下载看看吧,能够帮助别人我很开心,毕竟这也是开源精神^_^。

总结:最后想讲下,我在添加他的代码时候遇到一个纠结的问题就是freemarker配置了模板地址,那么sitemesh3.xml文件里面引用的装饰页面地址必须是这个地址下的,不清楚我讲的什么意思,那给你们看看就知道了:

<property name=”templateLoaderPath” value=”/WEB-INF/views/”/>

这个地址就是所有页面请求的freemarker地址,这个没什么好说了吧,下面就是sitemesh3.xml的配置了:

<mapping path=”/*” decorator=”/template/template.ftl”/>

可能你们还不明白,那我再贴张图片给你们看看:

看到/template/template.ftl了吗,再想想刚才freemarker里面配置的地址,现在明白了吧,当时我也没注意到在sitemesh3.xml装饰页面配置的地址是这样:

<mapping path=”/*” decorator=”/WEB-INF/views/template/template.ftl”/>

导致页面加载出错如图:

所以你们一定要注意这个问题,好了就说这么多,有问题q我:1576410833

本文链接:解决sitemesh3装饰页面不能使用freemarker标签问题,转载请注明。



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