Hi everyone,
I currently work on a Java WebApp using Servlet 3 technology and jetty-maven-plugin 8.0.0.M3 to run it. Since I developed a custom JAAS Login Module, I encounter a *ClassLoader* issue during the authentification phase. The exception thrown look like this : javax.security.auth.login.LoginException: java.lang.LinkageError: loader > constraint violation: loader (instance of > org/codehaus/plexus/classworlds/realm/ClassRealm) previously initiated > loading for a different type with name > "org/eclipse/jetty/http/security/Credential" > at java.lang.ClassLoader.defineClass1(Native Method) > at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) > at java.lang.ClassLoader.defineClass(ClassLoader.java:615) > at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) > at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) > at java.net.URLClassLoader.access$000(URLClassLoader.java:58) > at java.net.URLClassLoader$1.run(URLClassLoader.java:197) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(URLClassLoader.java:190) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromSelf(ClassRealm.java:386) > at > org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:42) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244) > at > org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230) > at > org.eclipse.jetty.plus.jaas.spi.UserInfo.checkCredential(UserInfo.java:58) > at > org.eclipse.jetty.plus.jaas.spi.AbstractLoginModule$JAASUserInfo.checkCredential(AbstractLoginModule.java:101) > ... After some research, I found this post: http://comments.gmane.org/gmane.comp.java.jetty.support/13254 It explain that set the *parentLoaderPriority *of the *WebAppContext* to *true *fix this issue. Unfortunately, it seems doesn't work in my case and I still have the same exception. My *pom.xml* contain that : <project xmlns="http://maven.apache.org/POM/4.0.0"; xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd";> <modelVersion>4.0.0</modelVersion> <groupId>com.supinfo</groupId> <artifactId>SupCommerce</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>SupCommerce</name> <properties> <jetty.version>8.0.0.M3</jetty.version> </properties> <dependencies> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>4.2.0.Final</version> <type>jar</type> </dependency> <dependency> <groupId>commons-lang</groupId> <artifactId>commons-lang</artifactId> <version>2.6</version> <type>jar</type> </dependency> <dependency> <groupId>hsqldb</groupId> <artifactId>hsqldb</artifactId> <version>1.8.0.10</version> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId> <version>1.0.1.Final</version> <type>jar</type> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>org.sitemesh</groupId> <artifactId>sitemesh</artifactId> <version>3.0-alpha-2</version> </dependency> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>r09</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>3.6.6.Final</version> </dependency> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.0.0.GA</version> </dependency> <dependency> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-annotations</artifactId> <version>${jetty.version}</version> </dependency> <dependency> <groupId>org.eclipse.jetty</groupId> <artifactId>jetty-plus</artifactId> <version>${jetty.version}</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.3.2</version> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.mortbay.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version>${jetty.version}</version> <configuration> <webAppConfig> <parentLoaderPriority>true</parentLoaderPriority> </webAppConfig> <webAppXml>src/main/resources/jetty.xml</webAppXml> <systemProperties> <systemProperty> <name>java.security.auth.login.config</name> <value>src/main/resources/login.conf</value> </systemProperty> </systemProperties> </configuration> </plugin> </plugins> </build> </project> Any idea of how I can fix this issue ? Thanks in advance. -- Brice Argenson Twitter: @bargenson
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