Java 春季宠物诊所：${owner.new}"；包含无效的表达式，Tomcat（6.0.32）

petclinic.war对Tomcat（6.0.32）的部署很好，但是在访问应用程序时，不会显示样式

svn co https://src.springframework.org/svn/spring-samples/petclinic/trunk/ petclinic
cd petclinic; mvn clean package

根本原因是：/WEB-INF/jsp/owners/form.jsp（第4行，第1列） “${owner.new}”包含无效的表达式： javax.el.ELException:未能分析表达式[${owner.new}] org.apache.jasper.JasperException:/WEB-INF/jsp/owners/form.jsp（第4行，第1列）“${owner.new}”包含无效表达式： javax.el.ELException:未能分析位于的表达式[${owner.new}] org.apache.jasper.compiler.DefaultErrorHandler.jsperor（DefaultErrorHandler.java:42）位于 org.apache.jasper.compiler.ErrorDispatcher.dispatch（ErrorDispatcher.java:408）位于 org.apache.jasper.compiler.ErrorDispatcher.jsperor（ErrorDispatcher.java:199）位于 org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes（Validator.java:1218）位于 org.apache.jasper.compiler.Validator$ValidateVisitor.visit（Validator.java:870）位于org.apache.jasper.compiler.Node$CustomTag.accept（Node.java:1539）位于 org.apache.jasper.compiler.Node$Nodes.visit（Node.java:2376）位于 org.apache.jasper.compiler.Node$Visitor.visitBody（Node.java:2428）位于 org.apache.jasper.compiler.Validator$ValidateVisitor.visit（Validator.java:889）位于org.apache.jasper.compiler.Node$CustomTag.accept（Node.java:1539）位于 org.apache.jasper.compiler.Node$Nodes.visit（Node.java:2376）位于 org.apache.jasper.compiler.Node$Visitor.visitBody（Node.java:2428）位于 org.apache.jasper.compiler.Node$Visitor.visit（Node.java:2434）位于 org.apache.jasper.compiler.Node$Root.accept（Node.java:475）位于 org.apache.jasper.compiler.Node$Nodes.visit（Node.java:2376）位于 org.apache.jasper.compiler.Validator.validateExDirectives（Validator.java:1790）在org.apache.jasper.compiler.compiler.generateJava（compiler.java:217）在org.apache.jasper.compiler.compiler.compile（compiler.java:373）在 org.apache.jasper.compiler.compiler.compile（compiler.java:353）位于 org.apache.jasper.compiler.compiler.compile（compiler.java:340）位于 org.apache.jasper.JspCompilationContext.compile（JspCompilationContext.java:644）位于 org.apache.jasper.servlet.JspServletWrapper.service（JspServletWrapper.java:358）位于 org.apache.jasper.servlet.JspServlet.serviceJspFile（JspServlet.java:389）在org.apache.jasper.servlet.JspServlet.service（JspServlet.java:333）在javax.servlet.http.HttpServlet.service（HttpServlet.java:722）在

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是否需要配置其他内容？

使用此占位符如何

${owner['new']}

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？

也许包括冒犯的行会有所帮助。但上述错误与风格有何关系？（“但在访问应用程序时，不会显示样式”）-我看不到这种关系，这是一个JSTL/EL错误。样式错误在Tomcat6.0.32/中应该仍然存在，而在6.0.29中应该可以工作），参考和顺便说一句： Root cause is: /WEB-INF/jsp/owners/form.jsp (line: 4, column: 1) "${owner.new}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${owner.new}] org.apache.jasper.JasperException: /WEB-INF/jsp/owners/form.jsp (line:4, column: 1) "${owner.new}" contains invalid expression(s): javax.el.ELException: Failed to parse the expression [${owner.new}] at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:42) at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:408) at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:199) at org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1218) at org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:870) at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1539) at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376) at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2428) at org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:889) at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1539) at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376) at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2428) at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2434) at org.apache.jasper.compiler.Node$Root.accept(Node.java:475) at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376) at org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1790) at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:217) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:373) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:353) at org.apache.jasper.compiler.Compiler.compile(Compiler.java:340) at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:644) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:358) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at