一个html文件，直接打开可以的，在Eclipese预览也可以用，但是部署到Tomcat服务器就出错了

[花田犯de错]

严重: Servlet.service() for servlet jsp threw exception
org.apache.el.parser.ParseException: Encountered " "}" "} "" at line 1, column 3.
Was expecting one of:
<INTEGER_LITERAL> ...
<FLOATING_POINT_LITERAL> ...
<STRING_LITERAL> ...
"true" ...
"false" ...
"null" ...
"(" ...
"!" ...
"not" ...
"empty" ...
"-" ...
<IDENTIFIER> ...

at org.apache.el.parser.ELParser.generateParseException(ELParser.java:2142)
at org.apache.el.parser.ELParser.jj_consume_token(ELParser.java:2024)
at org.apache.el.parser.ELParser.Unary(ELParser.java:951)
at org.apache.el.parser.ELParser.Multiplication(ELParser.java:711)
at org.apache.el.parser.ELParser.Math(ELParser.java:631)
at org.apache.el.parser.ELParser.Compare(ELParser.java:443)
at org.apache.el.parser.ELParser.Equality(ELParser.java:337)
at org.apache.el.parser.ELParser.And(ELParser.java:281)
at org.apache.el.parser.ELParser.Or(ELParser.java:225)
at org.apache.el.parser.ELParser.Choice(ELParser.java:182)
at org.apache.el.parser.ELParser.Expression(ELParser.java:174)
at org.apache.el.parser.ELParser.DynamicExpression(ELParser.java:146)
at org.apache.el.parser.ELParser.CompositeExpression(ELParser.java:43)
at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:114)
at org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:172)
at org.apache.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:216)
at org.apache.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:68)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:918)
at org.apache.jsp.MathJax_002d2_4_002dlatest.test.sample_002ddynamic_jsp._jspService(sample_002ddynamic_jsp.java:128)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.ninesky.framework.web.filter.BackURLFilter.doFilter(BackURLFilter.java:38)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
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: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:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:879)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:617)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1778)
at java.lang.Thread.run(Thread.java:619)

[忘年之]

编码问题吗？

[AndroidDev2022]

不是编码问题，我之前遇到过。你是不是在html里面使用的jstl或者el表达式，

[花田犯de错]

引用 2 楼 jdfkldjlkjdl 的回复:

不是编码问题，我之前遇到过。你是不是在html里面使用的jstl或者el表达式，

是的，我是利用mathjax官方的Demo，里面有$${}$$的表达式，html文件不会报错，jsp里面就报错

[AndroidDev2022]

那就仔细检查jsp页面的el和jstl的使用吧。