FreeMarker配置

这是spring-mvc.xml里对freemarker的相关配置

<bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver"> <property name="suffix" value=".ftl" /> <property name="contentType" value="text/html; charset=UTF-8" /> <!-- 将Spring的FreeMarkerView改成我们扩展的View --> <property name="viewClass" value="xidian.hy.wendu.test.freemarker.ExFreeMarkerView" /> <property name="exposeSpringMacroHelpers" value="true" /> <property name="exposeRequestAttributes" value="true" /> <property name="exposeSessionAttributes" value="true" /> <property name="exposePathVariables" value="true" /> <property name="allowSessionOverride" value="true" /> </bean> <bean id="fmXmlEscape" class="freemarker.template.utility.XmlEscape" /> <bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer"> <!-- 指定FreeMarker模板文件目录 --> <property name="templateLoaderPath" value="/WEB-INF/test/" /> <property name="freemarkerVariables"> <map> <entry key="xml_escape" value-ref="fmXmlEscape" /> </map> </property> <property name="freemarkerSettings"> <props> <prop key="defaultEncoding">UTF-8</prop> <prop key="locale">zh_CN</prop> </props> </property> </bean>

这是VIEW类

public class ExFreeMarkerView extends FreeMarkerView {@Overrideprotected void doRender(Map<String, Object> model, HttpServletRequest request, HttpServletResponse response) throws Exception {exposeModelAsRequestAttributes(model, request);SimpleHash fmModel = buildTemplateModel(model, request, response);if (logger.isDebugEnabled()) {logger.debug("Rendering FreeMarker template [" + getUrl() + "] in FreeMarkerView '" + getBeanName() + "'");}Locale locale = RequestContextUtils.getLocale(request);/* * 在这里我们默认生成<strong>静态</strong>文件,当ModelAndView有指定STATIC_HTML = false时,就不会输出HTML文件 例如：ModelAndView modelAndView = new ModelAndView("htmlTest"); modelAndView.addObject("STATICHTML", false); */if (Boolean.FALSE.equals(model.get("STATIC_HTML"))) {processTemplate(getTemplate(locale), fmModel, response);} else {createHTML(getTemplate(locale), fmModel, request, response);}}public void createHTML(Template template, SimpleHash model, HttpServletRequest request, HttpServletResponse response) throws IOException,TemplateException, ServletException {//站点根目录的绝对路径  String basePath = request.getSession().getServletContext().getRealPath("/");String requestHTML = this.getRequestHTML(request);//<strong>静态</strong><strong>页面</strong>绝对路径  String htmlPath = basePath + requestHTML;File htmlFile = new File(htmlPath);if (!htmlFile.getParentFile().exists()) {htmlFile.getParentFile().mkdirs();}/** * 如果<strong>静态</strong><strong>页面</strong>已经存在,就不再创建<strong>静态</strong><strong>页面</strong>. */if (!htmlFile.exists()) {htmlFile.createNewFile();Writer out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(htmlFile), "UTF-8"));//处理模版    template.process(model, out);out.flush();out.close();}/* 将请求转发到生成的htm文件 */request.getRequestDispatcher(requestHTML).forward(request, response);}/** * 计算要生成的<strong>静态</strong>文件相对路径. */private String getRequestHTML(HttpServletRequest request) {//web应用名称,部署在ROOT目录时为空  String contextPath = request.getContextPath();//web应用/目录/文件.do  String requestURI = request.getRequestURI();//basePath里面已经有了web应用名称，所以直接把它replace掉，以免重复  requestURI = requestURI.replaceFirst(contextPath, "");//将请求改为.htm,稍后将请求转发到此htm文件  requestURI += ".htm";return requestURI;}}

结果在继承了FreeMarkerView的类里生成好了静态页面进行重跳转

request.getRequestDispatcher("statictest.htm").forward(request, response);

的时候报错

javax.servlet.ServletException: Cannot expose bind macro helper 'springMacroRequestContext' because of an existing model object of the same nameat org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:156)at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)at xidian.hy.wendu.test.freemarker.ExFreeMarkerView.createHTML(ExFreeMarkerView.java:76)at xidian.hy.wendu.test.freemarker.ExFreeMarkerView.doRender(ExFreeMarkerView.java:43)at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233)at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167)at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:262)at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:119)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1852)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)at java.lang.Thread.run(Thread.java:722)