Caused by: java.lang.ClassNotFoundException: org.dom4j.io.STAXEventReader

Question

I am developing a web service application but sessionFactory bean is not creating because of below error. I can\'t see duplicate or conflict version of dom4j jar. I tried va

Answer 1

I used Ivy dependency manager and in my case I remove dom4j from core dependency and again add the last version 1.6.1 and that worked for me.

<dependency org="org.hibernate" name="hibernate-core" rev="5.2.8.Final">
    <exclude  org="dom4j"/>
</dependency>

<dependency org="dom4j" name="dom4j" rev="1.6.1"/>

Answer 2

You won't need to apply exclusions. Simply fix this by deleting your local repository and then re download libraries by doing the Alt+F5 + force update.

Doing this solved the issue for me.

Answer 3

In my case with the same problem I solve it setting this versions in pom.xml:

• Spring version 4.3.7.RELEASE
• Hibernate version 4.1.9.Final

I did't use <exclusions> at all and I added dom4j with version 1.4.

<dependency>
    <groupId>dom4j</groupId>
    <artifactId>dom4j</artifactId>
    <version>1.4</version>
</dependency> 

Answer 4

In my scenario, same stacktrace, I followed the answers without success. The solution was to remove dom4j from .m2/repository because apparently the jar was corrupt, and after downloaded again the problem was fixed.

Answer 5

Thanks to Hohenheim to point out the version issue.

Hibernate core 5.1.0.Final include dom4j-1.6.1 jar which throws this error. To fix this, need to exclude dom4j-1.6.1 from hibernate-core and include dom4j-1.6 in your pom.

I am not able find the exact reason why this is happening.

This is how I excluded dom4j from pom in hibernate dependency.

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.1.0.Final</version>
    <exclusions>
        <exclusion>
            <artifactId>jta</artifactId>
            <groupId>javax.transaction</groupId>
        </exclusion>
        <!-- Exclude SLF4j to avoid version conflicts (we have 1.6.6, this drags 
                in 1.6.1) -->
        <exclusion>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
        </exclusion>
        <!-- Exclude dom4j to avoid version conflicts (we have 1.6, this drags 
                in 1.6.1) -->
        <exclusion>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
        </exclusion>
    </exclusions>
</dependency>