| Summary: | ParseException for EL expression "${((test == true))}" | ||
|---|---|---|---|
| Product: | Tomcat 8 | Reporter: | Holger Stenzhorn <holger.stenzhorn> |
| Component: | EL | Assignee: | Tomcat Developers Mailing List <dev> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | holger.stenzhorn, serge.pak |
| Priority: | P2 | ||
| Version: | 8.0.3 | ||
| Target Milestone: | ---- | ||
| Hardware: | PC | ||
| OS: | Mac OS X 10.4 | ||
Thanks for the report. The parser was getting confused by the unnecessary brackets and thought it was looking at a lambda expression. I have updated the parser to fix this and an additional related issue as well as adding some test cases to confirm the fix. The fix will be included in 8.0.4 onwards. Great! Thanks for the quick fix. |
I have the following JSP (test) file: <html> <body> ${((test == true))} </body> </html> In Tomcat 7.0.52 this works fine but in Tomcat 8.0.3 the contained EL expression throws the following ParseException: org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/test] threw exception [An exception occurred processing JSP page /test.jsp at line 3 1: <html> 2: <body> 3: ${((test == true))} 4: </body> 5: </html> Stacktrace:] with root cause org.apache.el.parser.ParseException: Encountered " "==" "== "" at line 1, column 10. Was expecting one of: ")" ... "," ... at org.apache.el.parser.ELParser.generateParseException(ELParser.java:3068) at org.apache.el.parser.ELParser.jj_consume_token(ELParser.java:2950) at org.apache.el.parser.ELParser.LambdaParameters(ELParser.java:380) at org.apache.el.parser.ELParser.LambdaExpressionOrInvocation(ELParser.java:419) at org.apache.el.parser.ELParser.NonLiteral(ELParser.java:1533) at org.apache.el.parser.ELParser.ValuePrefix(ELParser.java:1369) at org.apache.el.parser.ELParser.Value(ELParser.java:1316) at org.apache.el.parser.ELParser.Unary(ELParser.java:1298) at org.apache.el.parser.ELParser.Multiplication(ELParser.java:1060) at org.apache.el.parser.ELParser.Math(ELParser.java:980) at org.apache.el.parser.ELParser.Concatenation(ELParser.java:936) at org.apache.el.parser.ELParser.Compare(ELParser.java:747) at org.apache.el.parser.ELParser.Equality(ELParser.java:641) at org.apache.el.parser.ELParser.And(ELParser.java:585) at org.apache.el.parser.ELParser.Or(ELParser.java:529) at org.apache.el.parser.ELParser.Choice(ELParser.java:486) at org.apache.el.parser.ELParser.Assignment(ELParser.java:243) at org.apache.el.parser.ELParser.Semicolon(ELParser.java:182) at org.apache.el.parser.ELParser.Expression(ELParser.java:175) at org.apache.el.parser.ELParser.DynamicExpression(ELParser.java:147) at org.apache.el.parser.ELParser.CompositeExpression(ELParser.java:44) at org.apache.el.lang.ExpressionBuilder.createNodeInternal(ExpressionBuilder.java:111) at org.apache.el.lang.ExpressionBuilder.build(ExpressionBuilder.java:168) at org.apache.el.lang.ExpressionBuilder.createValueExpression(ExpressionBuilder.java:230) at org.apache.el.ExpressionFactoryImpl.createValueExpression(ExpressionFactoryImpl.java:67) at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:955) at org.apache.jsp.test_jsp._jspService(test_jsp.java:65) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:403) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:347) at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)