UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource] - spring

Question

I know that this question has been answered before, but none of the responses seem to help me, since i am not using a datasource in my project.
I a have a Maven project, integrated with Spring and Hibernate, connecting to a SQL Server 2014 database.
This is my pom.xml, where you can see the versions:
<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>BachelorDegree</groupId>
<artifactId>BuildingAdministration</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>BuildingAdministration Maven Webapp</name>
<url>http://maven.apache.org</url>
<build>
<finalName>BuildingAdministration</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.3.1.RELEASE</spring.version>
<spring-security.version>4.1.1.RELEASE</spring-security.version>
<hibernate.version>5.2.1.Final</hibernate.version>
<hibernate.ga.version>3.5.4-Final</hibernate.ga.version>
<hibernate-annotation.version>3.5.6-Final</hibernate-annotation.version>
<javax-servlet-api.version>3.1.0</javax-servlet-api.version>
<jquery.version>2.1.1</jquery.version>
<bootstrap.version>3.2.0</bootstrap.version>
<javax-servlet.version>1.2</javax-servlet.version>
<log4j.version>2.6.2</log4j.version>
<spring.simple>2.5.6</spring.simple>
<jta.version>1.1</jta.version>
<aspectjweaver.version>1.8.9</aspectjweaver.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<!-- spring-context which provides core functionality -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
</dependency>
<!-- The spring-aop module provides an AOP Alliance-compliant aspect-oriented
programming implementation allowing you to define -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
</dependency>
<!-- The spring-webmvc module (also known as the Web-Servlet module) contains
Spring’s model-view-controller (MVC) and REST Web Services implementation
for web applications -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
</dependency>
<!-- http://mvnrepository.com/artifact/org.springframework.security/spring-security-taglibs -->
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
</dependency>
<!-- <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-annotations</artifactId>
<version>${hibernate-annotation.version}</version> </dependency> -->
<!-- <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version> </dependency> -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<!-- <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate</artifactId>
<version>${hibernate.ga.version}</version> </dependency> -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate</artifactId>
<version>${hibernate.ga.version}</version>
<type>pom</type>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>${jta.version}</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<exclusions>
<exclusion>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectjweaver.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>${hibernate.version}</version>
</dependency>
</dependencies>
<repositories>
<repository>
<id>org.springframework.maven.milestone</id>
<name>Spring Maven Milestone Repository</name>
<url>http://repo.springsource.org/libs-milestone-local</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>apache.snapshots</id>
<name>Apache Release Distribution Repository</name>
<url>
http://repository.apache.org/snapshots
</url>
</repository>
</repositories>
<dependencyManagement>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
<exclusions>
<exclusion>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-annotations</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>${jquery.version}</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>${bootstrap.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>${spring-security.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>${javax-servlet.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
</project>
This is hibernate.cfg.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver
</property>
<property name="connection.url">jdbc:sqlserver://localhost:1433;databaseName=Licenta
</property>
<property name="connection.username">sa</property>
<property name="connection.password">admin9</property>
<property name="default_schema">dbo</property>
<property name="dialect">org.hibernate.dialect.SQLServerDialect
</property>
<property name="hbm2ddl.auto">create</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.cache.internal.NoCacheProvider
</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- <property name="transaction.factory_class">org.transaction.JDBCTransactionFactory</property> -->
<property name="current_session_context_class">thread</property>
</session-factory>
</hibernate-configuration>
And the class where i create the session factory:
#Configuration
#EnableTransactionManagement
#EnableWebSecurity
#EnableGlobalMethodSecurity
#Import({ SecurityConfig.class })
public class HibernateUtils {
#Autowired
#Qualifier("sessionFactory")
private static SessionFactory sessionFactory = buildSessionFactory();
#Bean
private static SessionFactory buildSessionFactory() {
try {
if (sessionFactory == null) {
org.hibernate.cfg.Configuration configuration = new org.hibernate.cfg.Configuration().configure("/hibernate.cfg.xml");
addAnnotatedClasses(configuration);
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(
configuration.getProperties()).build();
sessionFactory = new org.hibernate.cfg.Configuration().configure().buildSessionFactory(serviceRegistry);
}
return sessionFactory;
} catch (Throwable ex) {
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
#Bean
#Autowired
public HibernateTransactionManager transactionManager(SessionFactory sessionFactory) {
System.out.println("enter transactionManager");
HibernateTransactionManager txManager = new org.springframework.orm.hibernate5.HibernateTransactionManager();
txManager.setSessionFactory(sessionFactory);
return txManager;
}
I use Tomcat 8. Whenever i run it, i get UnknownUnwrapTypeException: Cannot unwrap to requested type [javax.sql.DataSource]
I have tried adding the details for the c3p0 connection pool as i have seen in an earlier post and i don't get the error anymore, but the server doesn't start up either, just hangs there after creating the pool.
Can someone, please, help with that?

Answer 1

Well, i have figured it out. Seems like, instead of my current sessionFactory creation, I should have had something like:
StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder();
DataSource datasource = getDataSource();
serviceRegistryBuilder.applySetting(Environment.DATASOURCE, datasource);
serviceRegistryBuilder.applySettings(configuration.getProperties());
Properties hibernateProperties = setHibernateProperties();
serviceRegistryBuilder.applySettings(hibernateProperties);
StandardServiceRegistry serviceRegistry = serviceRegistryBuilder.build();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
Which means i externalized the properties from hibernate.cfg.xml like that:
#Bean
public static DataSource getDataSource() {
BasicDataSource dataSource = new BasicDataSource();
dataSource.setDriverClassName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
dataSource.setUrl("jdbc:sqlserver://localhost:1433;databaseName=Licenta");
dataSource.setUsername("sa");
dataSource.setPassword("admin9");
return dataSource;
}
private static Properties setHibernateProperties() {
Properties properties = new Properties();
properties.put("hibernate.dialect", "org.hibernate.dialect.SQLServer2008Dialect");
properties.put("hibernate.hbm2ddl.auto", "create");
properties.put("hibernate.show_sql", "true");
return properties;
}