https://issues.apache.org/bugzilla/show_bug.cgi?id=53735
Priority: P2
Bug ID: 53735
Assignee: dev@tomcat.apache.org
Summary: Update annotation scanning to be compatible with Java
7 class files
Severity: normal
Classification: Unclassified
OS: Windows XP
Reporter: knst.koli...@gmail.com
Hardware: PC
Status: NEW
Version: trunk
Component: Catalina
Product: Tomcat 8
As was reported on the users mailing list, the annotation scanning code may
fail when trying to scan a class compiled for Java 7. The thread:
"Tomcat 7.0.29 vs. Groovy with Java 7"
http://tomcat.markmail.org/thread/4y7jfmznleqdczwh
As said there, "It appears that when one installs the groovy-all-2.0.1-indy.jar
in a Tomcat web app, BCEL chokes on the Java 7 specific byte-code therein ala"
[[[
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag
in constant pool: 15 at
org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131)
at
org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60)
at
org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
at
org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
at
org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2066)
]]]
If the problem is with specific libraries (like Groovy 2.0), it is possible to
disable annotation scanning for them (see the thread above).
In general, though, as Tomcat 8 targets Java 7, it should be able to scan such
files.
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