 上传我的文档
 下载
 收藏
免责声明：本人所有资料来自网络和个人所创，版权归原作者所有，请注意保护知识产权，如有需要请购买正版图书，请您下载后勿作商用，于24小时内删除，本人所提供资料仅为方便学习交流。 本人如有侵犯作者权益，请作者联系官方或本人,本人将立即删除。
 下载此文档
正在努力加载中...
下载积分：600
内容提示：el表达式
文档格式：DOC|
浏览次数：0|
上传日期： 11:07:57|
文档星级：
全文阅读已结束，如果下载本文需要使用
 600 积分
下载此文档
该用户还上传了这些文档
官方公共微信您的访问出错了(404错误)
很抱歉，您要访问的页面不存在。
1、请检查您输入的地址是否正确。
进行查找。
3、感谢您使用本站，3秒后自动跳转至网站首页高手看题:请教在Tomcat6中 el表达式 用类似${a==b?变量A:a}时出错,【java吧】_百度贴吧
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&签到排名：今日本吧第个签到，本吧因你更精彩，明天继续来努力！
本吧签到人数：0成为超级会员，使用一键签到本月漏签0次！成为超级会员，赠送8张补签卡连续签到：天&&累计签到：天超级会员单次开通12个月以上，赠送连续签到卡3张
关注：632,976贴子：
高手看题:请教在Tomcat6中 el表达式 用类似${a==b?变量A:a}时出错,收藏
&%@&include&file=&/inc/top.jsp&&%&&
&%@&page&language=&java&&import=&java.util.*&&pageEncoding=&UTF-8&%&&
&%@&taglib&prefix=&c&&uri=&&&%&&
&%@&taglib&uri=&&&prefix=&html&&%&&
&%@&taglib&uri=&&&prefix=&bean&&%&&
&%@&taglib&uri=&&&prefix=&logic&&%&&
&%&
request.setAttribute(&a&,&1&);&
%&&
&hr&&
&br&&
&bean:define&id=&mc&&value=&复核&/&&
&br&&
代码A&${a=='1'?&a==1&:&a!=1&}&br&&
代码B&${mc==null?a:&mc!=null&}&br&&
使用代码A不回报错!&
使用代码B则报错!(可是这种情况&条件表达式返回值为变量时&在Tomcat5中是可运行正常的)&!&
报错代码为：Error&Parsing:&${mc==null?a:&mc!=null&}&
异常堆栈信息为：&
exception:&
javax.el.ELException:&Error&Parsing:&${mc==null?a:&mc!=null&}&
PrintStatckTrace():&
at&org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:125)&
at&org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:146)&
at&org.apache.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:190)&
at&org.apache.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:68)&
at&org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:922)&
at&org.apache.jsp.user.main_jsp._jspService(main_jsp.java:277)&
at&org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)&
at&javax.servlet.http.HttpServlet.service(HttpServlet.java:803)&
at&org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)&
at&org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)&
at&org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)&
at&javax.servlet.http.HttpServlet.service(HttpServlet.java:803)&
at&org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)&
at&org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)&
at&org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:630)&
at&org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)&
at&org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)&
at&org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)&
at&org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063)&
at&org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)&
at&org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)&
at&org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)&
at&org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)&
at&javax.servlet.http.HttpServlet.service(HttpServlet.java:690)&
at&javax.servlet.http.HttpServlet.service(HttpServlet.java:803)&
at&org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)&
at&org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)&
at&com.dotease.filter.AdminFilter.doFilter(AdminFilter.java:25)&
at&org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)&
at&org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)&
at&com.dotease.filter.EncodingFilter.doFilter(EncodingFilter.java:55)&
at&org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)&
at&org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)&
at&com.dotease.filter.CloseSessionFilter.doFilter(CloseSessionFilter.java:41)&
at&org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)&
at&org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)&
at&org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)&
at&org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)&
at&org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)&
at&org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)&
at&org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)&
at&org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)&
at&org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)&
at&org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)&
at&org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)&
at&java.lang.Thread.run(Unknown&Source)&
main_jsp.java&277行外代码为:&
276&out.write(&\t&);&
277&out.write((java.lang.String)&org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(&${mc==null?a:\&mc!=null\&}&,&java.lang.String.class,&(PageContext)_jspx_page_context,&null,&false));&
278&out.write(&&br&\r\n&);&
请教一下，该如何解决？&非常感谢各位网友能给点建议！
登录百度帐号推荐应用