ClassFormatError: attribut Code absent dans une méthode qui n'est ni native ni abstraite dans le fichier de classe javax / mail / MessagingException

Question

J'obtiens un étrange ClassFormatError lorsque j'utilise l'API javaMail pour envoyer des courriels sur mon application Web Spring MVC.

Ci-dessous mon mail-cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans 
        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <bean id="mailSource" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="Host" value="${mail.Host}" />
        <property name="port" value="${mail.port}" />
        <property name="username" value="${mail.username}" />
        <property name="password" value="${mail.password}" />

        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.smtp.starttls.enable">true</prop>
            </props>
        </property>
    </bean>

    <bean id="mailHelper" class="com.jr.freedom.util.MailHelper">
        <property name="mailSender" ref="mailSource"></property>
        <property name="messageText"
            value="Thank you for reigistering to the Freedom Application. Please copy and paste your activation code below \n\n"></property>
    </bean>
</beans>

Mon fichier POM

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>FreedomSpring</groupId>
    <artifactId>FreedomSpring</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>

    <build>
        <plugins>
            <plugin>
                <groupId>org.Apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
                <configuration>
                    <source>1.5</source>
                    <target>1.5</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.Apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <!-- specifiy which directory within the project hierarchy will be considered 
                        as the root directory from the generated war file -->
                    <warSourceDirectory>WebContent</warSourceDirectory>
                    <webXml>src\main\webapp\WEB-INF\web.xml</webXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <!-- Dependencies below for spring, hibernate, json etc -->
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.10</version>
        </dependency>
        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>4.1.7.Final</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>4.3.0.Final</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-mock</artifactId>
            <version>2.0.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.1.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>1.9.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-Java</artifactId>
            <version>5.1.21</version>
        </dependency>
        <dependency>
            <groupId>org.Apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.2.1</version>
        </dependency>
        <dependency>
            <groupId>org.Apache.shiro</groupId>
            <artifactId>shiro-core</artifactId>
            <version>1.2.1</version>
        </dependency>

    </dependencies>

</project>

Trace de pile complète

Java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.Java:157)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.Java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.Java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.Java:321)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.Java:211)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.Java:288)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.Java:15)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.Java:290)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.Java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.Java:47)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.Java:231)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.Java:60)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.Java:229)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.Java:50)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.Java:222)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.Java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.Java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.Java:300)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.Java:174)
    at org.Eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.Java:50)
    at org.Eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.Java:38)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.Java:467)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.Java:683)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.Java:390)
    at org.Eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.Java:197)
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.jr.freedom.user.UserService com.jr.freedom.controllers.UserController.userService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'UserService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.jr.freedom.user.UserService.setMailHelper(com.jr.freedom.util.MailHelper); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailHelper' defined in class path resource [mail-cfg.xml]: Initialization of bean failed; nested exception is Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:287)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.Java:609)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.Java:918)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.Java:469)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.Java:103)
    at org.springframework.test.context.support.AbstractGenericContextLoader.loadContext(AbstractGenericContextLoader.Java:1)
    at org.springframework.test.context.support.DelegatingSmartContextLoader.loadContext(DelegatingSmartContextLoader.Java:228)
    at org.springframework.test.context.TestContext.loadApplicationContext(TestContext.Java:124)
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.Java:148)
    ... 24 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.jr.freedom.user.UserService com.jr.freedom.controllers.UserController.userService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'UserService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.jr.freedom.user.UserService.setMailHelper(com.jr.freedom.util.MailHelper); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailHelper' defined in class path resource [mail-cfg.xml]: Initialization of bean failed; nested exception is Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:506)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:284)
    ... 39 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'UserService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.jr.freedom.user.UserService.setMailHelper(com.jr.freedom.util.MailHelper); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailHelper' defined in class path resource [mail-cfg.xml]: Initialization of bean failed; nested exception is Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:287)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:517)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.Java:876)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:818)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:735)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:478)
    ... 41 more
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void com.jr.freedom.user.UserService.setMailHelper(com.jr.freedom.util.MailHelper); nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailHelper' defined in class path resource [mail-cfg.xml]: Initialization of bean failed; nested exception is Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.Java:593)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:284)
    ... 52 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'mailHelper' defined in class path resource [mail-cfg.xml]: Initialization of bean failed; nested exception is Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:527)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:193)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.Java:876)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:818)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:735)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.Java:551)
    ... 54 more
Caused by: Java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/MessagingException
    at Java.lang.ClassLoader.defineClass1(Native Method)
    at Java.lang.ClassLoader.defineClass(Unknown Source)
    at Java.security.SecureClassLoader.defineClass(Unknown Source)
    at Java.net.URLClassLoader.defineClass(Unknown Source)
    at Java.net.URLClassLoader.access$100(Unknown Source)
    at Java.net.URLClassLoader$1.run(Unknown Source)
    at Java.net.URLClassLoader$1.run(Unknown Source)
    at Java.security.AccessController.doPrivileged(Native Method)
    at Java.net.URLClassLoader.findClass(Unknown Source)
    at Java.lang.ClassLoader.loadClass(Unknown Source)
    at Sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at Java.lang.ClassLoader.loadClass(Unknown Source)
    at Java.lang.Class.getDeclaredConstructors0(Native Method)
    at Java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
    at Java.lang.Class.getDeclaredConstructors(Unknown Source)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.Java:229)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.Java:962)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.Java:935)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:485)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:456)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:294)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:225)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:291)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:193)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.Java:322)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.Java:106)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.Java:1360)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1118)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:517)
    ... 63 more

Answer 1

Le javax:javaee-api est destiné à la compilation, pas à l'exécution, y compris les tests unitaires. Si vous avez besoin de classes adaptées pour s'exécuter contre, exécutez contre un Java EE.

En outre, le nom correct est Java EE , pas [~ # ~] jee [~ # ~] .

Answer 2

J'avais un problème similaire, ... donc, lorsque j'exécutais JUnit, une erreur s'est produite:

Absent Code attribute in method that is not native or abstract in class file javax/servlet/http/HttpServlet

Je le résous en ajoutant la dépendance suivante (la première):

<dependency>
    <groupId>org.glassfish.main.extras</groupId>
    <artifactId>glassfish-embedded-all</artifactId>
    <version>3.1.2.2</version>
    <scope>test</scope>
</dependency>

Answer 3

Vous obtenez normalement cette erreur lorsque vous avez plusieurs fichiers JAR en conflit dans votre chemin de classe. L'une des raisons les plus courantes est que si vous incluez un artefact dans votre chemin de classe qui est censé être fourni par le conteneur d'application. En regardant votre POM, vous avez plusieurs dépendances redondantes et qui se chevauchent. Retirez-les:

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>javax.validation</groupId>
    <artifactId>validation-api</artifactId>
    <version>1.0.0.GA</version>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>
<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4.3</version>
</dependency>
<dependency>
    <groupId>javaee</groupId>
    <artifactId>javaee-api</artifactId>
    <version>5</version>
</dependency>

Et changez l'étendue de votre dépendance Java EE en 'fourni':

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
</dependency>

Enfin, assurez-vous que vous déployez sur un serveur Web compatible avec Java EE 6, et l'erreur devrait disparaître.

--- Modifier ---

Je viens de remarquer que vous compilez à un niveau de conformité Java 5. Modifiez ceci:

<configuration>
    <source>1.5</source>
    <target>1.5</target>
</configuration>

Et faites les valeurs source et cible 1.6.

Answer 4

Moi aussi, j'ai fait face au même genre d'exception lors de l'exécution de junits avec jmock et maven:

Exception dans le constructeur: testDoExecute (Java.lang.ClassFormatError: attribut Code absent dans la méthode qui n'est ni native ni abstraite dans le fichier de classe javax/servlet/http/Cookie à Java.lang.ClassLoader.defineClass1 (méthode native)

Cela est dû aux classes auxquelles votre code essaie d'accéder qui ne sont pas disponibles dans le pot javaee api utilisé dans le projet car votre code se compile avec des classes incomplètes, comme JavaEE6 Api et vos tests unitaires essaient de le code d'accès n'est pas là. JUnit échouera simplement et marquera le test comme une erreur, imprimant quelque chose comme l'exception ci-dessus.

Il pourrait être résolu soit en ajoutant javax.servlet jar/dependency ou en changeant la version javaee jar illustrée ci-dessous:

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>servlet-api</artifactId>
    <version>2.5</version>
</dependency>

**OR** 

<dependency>
    <groupId>javax.j2ee</groupId>
    <artifactId>j2ee</artifactId>
    <version>1.4</version>
    <scope>provided</scope>
</dependency>

PS : Veuillez ajouter la version du pot compatible avec vos autres pots existants dans le projet.