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Could Not Initialize Class Org.apache.maven.plugin.war.util.webappstructureserializer [ 2025-2027 ]

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:3.3.2:war (default-war) on project my-webapp: Could not initialize class org.apache.maven.plugin.war.util.WebappStructureSerializer This error typically appears when building a WAR file using the Maven War Plugin. It stops your build dead in its tracks. Let's break down why this happens and how to fix it. The WebappStructureSerializer class is an internal utility used by the Maven War Plugin to serialize the structure of your web application (mapping of files, libraries, and descriptors). The error "could not initialize class" means the Java Virtual Machine (JVM) tried to load this class but failed during its static initialization.

The most common root cause? .

Specifically, the War Plugin (versions 3.3.x) relies on JAXB (Java Architecture for XML Binding) to serialize the webapp structure into XML. Starting with Java 9, JAXB was removed from the default JDK module path. If you're running on without explicitly adding JAXB dependencies, you'll encounter this error. [ERROR] Failed to execute goal org

<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.4.0</version> </plugin> If the above doesn't work, force the War Plugin to use JAXB by declaring it inside the plugin's own <dependencies> block: you'll encounter this error. &lt

<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.4.0</version> <dependencies> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> <version>2.3.1</version> </dependency> <dependency> <groupId>org.glassfish.jaxb</groupId> <artifactId>jaxb-runtime</artifactId> <version>2.3.1</version> </dependency> </dependencies> </plugin> Sometimes the plugin JAR itself gets corrupted. Clear the War Plugin from your local repository: If the above doesn't work

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:3.3.2:war (default-war) on project my-webapp: Could not initialize class org.apache.maven.plugin.war.util.WebappStructureSerializer This error typically appears when building a WAR file using the Maven War Plugin. It stops your build dead in its tracks. Let's break down why this happens and how to fix it. The WebappStructureSerializer class is an internal utility used by the Maven War Plugin to serialize the structure of your web application (mapping of files, libraries, and descriptors). The error "could not initialize class" means the Java Virtual Machine (JVM) tried to load this class but failed during its static initialization.

The most common root cause? .

Specifically, the War Plugin (versions 3.3.x) relies on JAXB (Java Architecture for XML Binding) to serialize the webapp structure into XML. Starting with Java 9, JAXB was removed from the default JDK module path. If you're running on without explicitly adding JAXB dependencies, you'll encounter this error.

<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.4.0</version> </plugin> If the above doesn't work, force the War Plugin to use JAXB by declaring it inside the plugin's own <dependencies> block:

<plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-war-plugin</artifactId> <version>3.4.0</version> <dependencies> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api</artifactId> <version>2.3.1</version> </dependency> <dependency> <groupId>org.glassfish.jaxb</groupId> <artifactId>jaxb-runtime</artifactId> <version>2.3.1</version> </dependency> </dependencies> </plugin> Sometimes the plugin JAR itself gets corrupted. Clear the War Plugin from your local repository: