AbstractMethodError due to Apache Abdera Dependency

Question

I am using following Apache Abdera dependency for consuming an Atom feed.

    <dependency>
        <groupId>org.apache.abdera</groupId>
        <artifactId>abdera-parser</artifactId>
        <version>1.1.3</version>
    </dependency>

After I add abdera dependency into pom.xml, I receive an AbstractMethodError from another service. Following is the stack trace:

Caused by: java.lang.AbstractMethodError
    at org.apache.cxf.staxutils.StaxUtils.addLocation(StaxUtils.java:1110) [cxf-common-utilities-2.4.6.jar:2.4.6]
    at org.apache.cxf.staxutils.StaxUtils.readDocElements(StaxUtils.java:998) [cxf-common-utilities-2.4.6.jar:2.4.6]
    at org.apache.cxf.staxutils.StaxUtils.readDocElements(StaxUtils.java:971) [cxf-common-utilities-2.4.6.jar:2.4.6]
    at org.apache.cxf.staxutils.StaxUtils.read(StaxUtils.java:898) [cxf-common-utilities-2.4.6.jar:2.4.6]

I am using Java 7.

Answer 1

I checked maven transitive dependencies and saw that xerces is included by multiple libraries including Apache Abdera.

To resolve this error, I updated dependency configuration by excluding xerces dependency as follows:

    <dependency>
        <groupId>org.apache.abdera</groupId>
        <artifactId>abdera-parser</artifactId>
        <version>1.1.3</version>
        <exclusions>
            <exclusion>
                <groupId>xerces</groupId>
                <artifactId>xercesImpl</artifactId>
            </exclusion>
        </exclusions>
    </dependency>