When using mulitple Spring dependencies, the files from META-INF (from the
Spring jars) overwrite each other in an executable jar-with-dependencies.
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Key: MASSEMBLY-360
URL: http://jira.codehaus.org/browse/MASSEMBLY-360
Project: Maven 2.x Assembly Plugin
Issue Type: Bug
Affects Versions: 2.2-beta-2
Environment: Windows XP, Java 5
Reporter: Marielle Enderman
I'm working on a Java 5 project with maven 2 and I need to deliver an
executable jar file. In this project I'm using different Spring dependencies:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>2.5.5</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>2.5.5</version>
</dependency>
For maven packaging I'm using the maven-assembly plugin to create an executable
jar with dependencies (using the jar-with-dependencies descriptor). Everything
works fine, except that Spring's XSD files can't be found. At least: not all of
them. The fact is: Every Spring JAR file contains a META-INF directory with
files like spring.handlers and spring.schemas which contain list of locations
of respectively namespace handlers and schemas. Unfortunately these files
aren't merged during packaging so the META_INF of the executable JAR file only
contains the last one added.
This can result in errors like this:
Example 1: The spring-context-2.5.xsd can't be found:
WARN org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Ignored
XML validation warning org.xml.sax.SAXParseException: schema_reference.4:
Failed to read schema document
'http://www.springframework.org/schema/context/spring-context-2.5.xsd', because
1) could not find the document; 2) the document could not be read; 3) the root
element of the document is not <xsd:schema>.
Example 2: The NamespaceHandler for the spring context namespace can't be
located:
Exception in thread "main"
org.springframework.beans.factory.parsing.BeanDefinitionParsingException:
Configuration problem: Unable to locate Spring NamespaceHandler for XML schema
namespace [http://www.springframework.org/schema/context]
When I manually merge the files, the executable JAR file works fine.
I hope this problem can be solved.
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