Problem running runnable JAR: Unable to load class [com.microsoft.sqlserver.jdbc.SQLServerDriver]

Question

Problem running runnable JAR: Unable to load class [com.microsoft.sqlserver.jdbc.SQLServerDriver]

Navigation

#1 by (1 votes)

2

I am facing the following problem: we are in the development phase of a project, which involves the following technologies, SQL Server, Hibernate, maven, quartz and java.

After the end of one of the coding phases we tried to generate a runnable jar , but at the time of executing it we encountered a series of errors involving the jdbc driver which we can not resolve.

Error generated after running JAR:

C:\Users\-----\workspace\CadastroProcessosMaven\CadastroProcessosMaven\target>java -jar extrator-acoesnovas-jar-with-dependencies.jar
ERROR StatusLogger No log4j2 configuration file found. Using default    configuration: logging only errors to the console. 
Exception in thread "main" java.lang.ExceptionInInitializerError at dao.MCPCPProcessoDAO.buscarProcessosPorSistema(MCPCPProcessoDAO.java:116)
at MainPackage.Crawler.consultarProcessos(Crawler.java:31)
at MainPackage.Crawler.main(Crawler.java:26)
Caused by: javax.persistence.PersistenceException: Unable to build entity manager factory
at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:66)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
at dao.util.ConnectionFactory.<clinit>(ConnectionFactory.java:20)... 3 more
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:244)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:208)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureServic e(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:770)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:797)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58)
    ... 6 more
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [com.microsoft.sqlserver.jdbc.SQLServerDriver]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:229)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:183)

    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:139)
    at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:78)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:217)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:189)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88)
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:234)
    ... 17 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : com.microsoft.sqlserver.jdbc.SQLServerDriver
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:217)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Unknown Source)
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:226)
    ... 28 more

File pom.xml :

<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>
<artifactId>CadastroProcessos</artifactId>
<version>1.0</version>

<build>
    <finalName>extrator-acoesnovas</finalName>
    <sourceDirectory>src/main/java</sourceDirectory>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
        </resource>
    </resources>
    <plugins>
        <!-- Maven Compiler Plugin -->
        <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.3</version>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>

        <!-- DEFINE AS CONFIGURAÇÕES DO MAVEN ASSEMBLER -->
        <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <configuration>
                <archive>

                    <!-- DEFINE QUAL É A CLASSE MAIN DA APLICAÇÃO -->
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <mainClass>MainPackage.CrawlerVivo</mainClass>
                    </manifest>
                </archive>

                <!-- ADICIONO AO NOME DO JAR FINAL UM COMPLEMENTO DIZENDO QUE ELE CONTÉM 
                    AS DEPENDÊNCIAS -->

                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                </descriptorRefs>
            </configuration>
            <executions>
                <execution>

                    <!-- DETERMINO QUE O JAR GERADO INCLUIRÁ AS DEPENDÊNCIAS E ELAS SERÃO 
                        EMPACOTADAS JUNTO COM O PROJETO EM UM ÚNICO JAR -->

                    <id>make-my-jar-with-dependencies</id>
                    <phase>package</phase>
                    <goals>
                        <goal>single</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
    </plugins>

</build>
<dependencies>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>org.apache.pdfbox</groupId>
        <artifactId>pdfbox</artifactId>
        <version>1.8.10</version>
    </dependency>
    <dependency>
        <groupId>net.sourceforge.htmlunit</groupId>
        <artifactId>htmlunit</artifactId>
        <version>2.15</version>
    </dependency>
    <dependency>
        <groupId>net.sourceforge.htmlunit</groupId>
        <artifactId>htmlunit-core-js</artifactId>
        <version>2.15</version>
    </dependency>
    <dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.8.3</version>
    </dependency>
    <dependency>
        <groupId>net.sourceforge.jexcelapi</groupId>
        <artifactId>jxl</artifactId>
        <version>2.6.12</version>
    </dependency>
    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.0.1.Final</version>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-entitymanager</artifactId>
        <version>5.0.1.Final</version>
    </dependency>

    <dependency>
        <groupId>javax.mail</groupId>
        <artifactId>mail</artifactId>
        <version>1.4</version>
    </dependency>
    <dependency>
        <groupId>de.intarsys.opensource</groupId>
        <artifactId>isrt</artifactId>
        <version>4.10</version>
    </dependency>

    <dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz</artifactId>
        <version>2.2.2</version>
    </dependency>
    <dependency>
        <groupId>org.quartz-scheduler</groupId>
        <artifactId>quartz-jobs</artifactId>
        <version>2.2.2</version>
    </dependency>

    <dependency>
        <groupId>org.apache.logging.log4j</groupId>
        <artifactId>log4j-core</artifactId>
        <version>2.3</version>
    </dependency>

    <dependency>
        <groupId>com.microsoft.sqlserver</groupId>
        <artifactId>sqljdbc4</artifactId>
        <version>3.0</version>
        <scope>system</scope>
        <systemPath>${basedir}/lib/sqljdbc4.jar</systemPath>
        <optional>true</optional>
    </dependency>

</dependencies>
</project>

Log Build Maven:

[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
[WARNING] 
[WARNING] Some problems were encountered while building the effective model           
[WARNING] 'dependencies.dependency.systemPath' for    com.microsoft.sqlserver:sqljdbc4:jar should not point at files within the project directory, ${basedir}/lib/sqljdbc4.jar will be unresolvable by dependent projects @ line 134, column 16
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support      building such malformed projects.
[WARNING] 
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building CadastroProcessos 1.0
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ CadastroProcessos ---
[INFO] Deleting C:\Users\-----\workspace\CadastroProcessosFinal\CadastroProcessosMaven\target
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ CadastroProcessos ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 2 resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.3:compile (default-compile) @    CadastroProcessos ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 82 source files to C:\Users\------\workspace\CadastroProcessosFinal\CadastroProcessosMaven\target\classes
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ CadastroProcessos ---
[INFO] Not copying test resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.3:testCompile (default-testCompile) @ CadastroProcessos ---
[INFO] Not compiling test sources
[INFO] 
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) @ CadastroProcessos ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) @ CadastroProcessos ---
[INFO] Building jar: C:\Users\-----\workspace\CadastroProcessosFinal\CadastroProcessosMaven\target\CadastroProcessos-1.0.jar
[INFO] 
[INFO] --- maven-install-plugin:2.4:install (default-install) @   CadastroProcessos ---
[INFO] Installing C:\Users\------\workspace\CadastroProcessosFinal\CadastroProcessosMaven\target\CadastroProcessos-1.0.jar to C:\Users\-----\.m2\repository\br\com\finchsolucoes\CadastroProcessos.0\CadastroProcessos-1.0.jar
[INFO] Installing C:\Users\-----\workspace\CadastroProcessosFinal\CadastroProcessosMaven\pom.xml to C:\Users\------\.m2\repository\br\com\finchsolucoes\CadastroProcessos.0\CadastroProcessos-1.0.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 47.167 s
[INFO] Finished at: 2015-10-23T08:28:15-02:00
[INFO] Final Memory: 31M/494M
[INFO] ------------------------------------------------------------------------

java sql-server hibernate

asked by anonymous 23.10.2015 / 16:06

1 answer

Event Routine - PHP Problem with password encryption (PHP)

score 1 · Answer 1

The root of your problem is a ClassNotFoundException , because there is no class in the classpath of the application.

As discussed the absence of this class in classpath is due to the fact that it is not being packaged.

There is no (as far as I know) dependency in a public repository, so you can do it in two ways:

install the dependency in your local repository and then reference it in your pom.xml . To do this, run this from the directory where your driver jar file is (or enter full path in file ):

mvn install:install-file -Dfile=sqljdbc4.jar -DgroupId=com.microsoft.sqlserver -DartifactId=sqljdbc4 -Dversion=4.0 -Dpackaging=jar

And no pom.xml :

<dependency>
    <groupId>com.microsoft.sqlserver</groupId>
    <artifactId>sqljdbc4</artifactId>
    <version>4.0</version>
</dependency>

using system dependencies , commonly used in this case. An example would be:

<dependency>
    <groupId>com.microsoft.sqlserver</groupId>
    <artifactId>sqljdbc4</artifactId>
    <version>4.0</version>
    <scope>system</scope>
    <!-- normalmente path não empacotado e que deve estar -->
    <!-- presente no ambiente em que o projeto será executado -->
    <systemPath>${propriedade.path}/sqljdbc4.jar</systemPath>
</dependency>