jsf教程ajax,ajax4jsf解决办法

当前位置:我的异常网» Java Web开发 » ajax4jsf解决办法

ajax4jsf解决办法

www.myexceptions.net  网友分享于：2013-02-21  浏览：19次

ajax4jsf

我在做一个网站，用的是MyFaces，还用到了Ajax4JSF。但是原来用JSP实现的文件下载功能就不好使了，出现下面的异常，请问是怎么回事呀？怎么改正呢？

java.lang.IllegalStateException:   Servlet   response   already   use   stream,   Writer   not   possible

at   org.ajax4jsf.framework.ajax.xmlfilter.FilterServletResponseWrapper.getWriter(FilterServletResponseWrapper.java:220)

at   org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:124)

at   org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:117)

at   org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:191)

at   org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:115)

at   org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:75)

at   org.apache.jsp.pages.download_jsp._jspService(download_jsp.java:216)

at   org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)

at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

at   org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)

at   org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)

at   org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)

at   javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)

at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at   org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)

at   org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)

at   org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)

at   org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)

at   org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:416)

at   org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)

at   org.ajax4jsf.framework.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)

at   org.ajax4jsf.framework.ajax.AjaxViewHandler.renderView(AjaxViewHandler.java:229)

at   org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:384)

at   javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)

at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)

at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at   org.ajax4jsf.framework.ajax.xmlfilter.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:96)

at   org.ajax4jsf.framework.ajax.xmlfilter.BaseFilter.doFilter(BaseFilter.java:220)

at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)

at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at   cn.com.pbi.netmgr.web.morning.ExceptionFilter.doFilter(ExceptionFilter.java:55)

at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)

at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at   org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)

at   org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)

at   org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)

at   org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)

文章评论