“Unknow type constant pool at position X” in tomcat logs since java 8

问题

I have a Java JSF2 web based application deployed on a Tomcat server, and since we moved to Java 8 / Tomcat 8 this error appears a lot in the tomcat output:

déc. 05, 2016 10:51:07 AM com.sun.faces.config.JavaClassScanningAnnotationScanner$ConstantPoolInfo containsAnnotation
GRAVE: Unknow type constant pool 0 at position 178

I tried different stuff to fix this warning but it always comes back.

Is this log a symptom of any issue ? Is it just a normal output? Is there a way to fix this?

回答1:

I was presenting the same problem

Today I updated my pom.xml file to jsf version: 2.2.15 and that ERROR log was gone.

<dependency>
   <groupId>com.sun.faces</groupId>
   <artifactId>jsf-api</artifactId>
   <version>${jsf.version}</version>
   <scope>provided</scope>
</dependency>

<dependency>
   <groupId>com.sun.faces</groupId>
   <artifactId>jsf-impl</artifactId>
   <version>${jsf.version}</version>
   <scope>provided</scope>
</dependency>

回答2:

From my research it appears that this was a bug in JSF implementation and was fixed in JSF version 2.3.0-m02

Reported Bugs: http://github.com/javaserverfaces/mojarra/issues/3736 https://github.com/javaserverfaces/mojarra/issues/3780

Where to obtain fixed versions of the JSF implementation http://repo1.maven.org/maven2/javax/faces/javax.faces-api/2.2/ http://repo1.maven.org/maven2/org/glassfish/javax.faces/2.3.0-m02/

Or update maven POM dependency with (2.3.0-m02 or higher):

<groupId>org.glassfish</groupId>
<artifactId>javax.faces</artifactId>
<version>2.3.0-m02</version>

来源：https://stackoverflow.com/questions/40971621/unknow-type-constant-pool-at-position-x-in-tomcat-logs-since-java-8

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