使用JDK 1.8的Tomcat 8，應用程序部署導致NPE

Question

當我使用JDK 1.8將應用程序部署在Tomcat 8中時，我得到了此NPE。在JDK 1.8的Tomcat 7中，相同的應用程序可以正常工作。我們不會在我們的應用程序中運送任何el-api罐子。有沒有人遇到這個問題？

java.lang.NullPointerException 
javax.el.CompositeELResolver.add(CompositeELResolver.java:49) 
org.apache.jasper.el.ELContextImpl.<clinit>(ELContextImpl.java:87) 
org.apache.jasper.compiler.Validator$ValidateVisitor.getJspAttribute(Validator.java:1414) 
org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1231) 
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:879) 
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1536) 
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376) 
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2428) 
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2434) 
org.apache.jasper.compiler.Node$Root.accept(Node.java:464) 
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376) 
org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1846) 
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:217) 
org.apache.jasper.compiler.Compiler.compile(Compiler.java:356) 
org.apache.jasper.compiler.Compiler.compile(Compiler.java:336) 
org.apache.jasper.compiler.Compiler.compile(Compiler.java:323) 
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:564) 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357) 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396) 
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
com.actuate.iv.presentation.aggregation.IVBaseFragment.service(IVBaseFragment.java:261) 
com.actuate.iv.servlet.IVHttpDispatcher.handleRequest(IVHttpDispatcher.java:144) 
com.actuate.iv.servlet.IVServlet.doGet(IVServlet.java:261) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:618) 
org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:725) 
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 

Answer 1

我們有這個問題有以下配置：

Using CATALINA_BASE: /opt/tomcat 
Using CATALINA_HOME: /opt/tomcat 
Using CATALINA_TMPDIR: /opt/tomcat/temp 
Using JRE_HOME:  /usr/java/jdk1.8.0_45 
Using CLASSPATH:  /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar 
Server version: Apache Tomcat 
Server built: May 19 2015 14:58:38 UTC 
Server number: 8.0.23.0 
OS Name:  Linux 
OS Version:  2.6.32-431.11.2.el6.x86_64 
Architecture: amd64 
JVM Version: 1.8.0_45-b14 
JVM Vendor:  Oracle Corporation 

我們通過升級的tomcat從8.0.23.0到8.0.26.0版本解決了這個問題。