title: Configure HikariCP in Spring Boot with JTDS
body: <p>I want to add a connection pool to my existing web application, which has been made using Spring Boot 1.5.1. </p>
  
  <p>The datasource configuration is made in application.properties as follows:</p>
  
  <pre><code>spring.datasource.url=jdbc:jtds:sqlserver://localhost:1433;databaseName=MyDatabase;instance=SQLServer2014;
  spring.datasource.username=myuser
  spring.datasource.password=passwd
  spring.datasource.driver-class-name=net.sourceforge.jtds.jdbc.Driver
  spring.jpa.hibernate.ddl-auto=update
  </code></pre>
  
  <p>I don't need to make any further configuration, with this is enough. </p>
  
  <p>It isn't clear enough in the official <a href="https://github.com/brettwooldridge/HikariCP" rel="noreferrer">docs</a>, although parameters are shown, nor in the Spring Boot <a href="https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-sql.html#boot-features-connect-to-production-database" rel="noreferrer">docs</a>.</p>
  
  <p>So, I've been looking for solutions over there (<a href="https://stackoverflow.com/questions/35250636/configuration-of-jtds-for-use-with-hikaricp-spring-ms-sql-server">this one</a>, <a href="https://stackoverflow.com/questions/26490967/how-do-i-configure-hikaricp-in-my-spring-boot-app-in-my-application-properties-f">this one too</a>...).</p>
  
  <p>I've made several trials, but everytime I run the app, exceptions regarding HikariCP are thrown.</p>
  
  <p>When adding <code>spring.datasource.type=com.zaxxer.hikari.HikariDataSource</code>, the following exception is thrown:</p>
  
  <pre><code>2017-02-15 12:12:23.955  WARN 14844 --- [           main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.AbstractMethodError
  2017-02-15 12:12:23.964  INFO 14844 --- [           main] utoConfigurationReportLoggingInitializer :
  Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
  2017-02-15 12:12:23.970 ERROR 14844 --- [           main] o.s.boot.SpringApplication               : Application startup failed
  org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is java.lang.AbstractMethodError
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1081) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:856) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.1.RELEASE.jar:1.5.1.RELEASE]
      at com.ingartek.ws.pps.PrestacionesPoliticasSocialesInternoApplication.main(PrestacionesPoliticasSocialesInternoApplication.java:26) [classes/:na]
  Caused by: java.lang.AbstractMethodError: null
      at net.sourceforge.jtds.jdbc.JtdsConnection.isValid(JtdsConnection.java:2833) ~[jtds-1.3.1.jar:1.3.1]
      at com.zaxxer.hikari.pool.PoolBase.checkDriverSupport(PoolBase.java:422) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.PoolBase.setupConnection(PoolBase.java:393) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:351) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:196) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:442) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:505) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.pool.HikariPool.&lt;init&gt;(HikariPool.java:113) ~[HikariCP-2.6.0.jar:na]
      at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:97) ~[HikariCP-2.6.0.jar:na]
      at org.hibernate.engine.jdbc.connections.internal.DatasourceConnectionProviderImpl.getConnection(DatasourceConnectionProviderImpl.java:122) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$ConnectionProviderJdbcConnectionAccess.obtainConnection(JdbcEnvironmentInitiator.java:180) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:68) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:257) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:231) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:240) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:858) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:885) ~[hibernate-core-5.2.6.Final.jar:5.2.6.Final]
      at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:353) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:373) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:362) ~[spring-orm-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
      ... 16 common frames omitted
  </code></pre>
  
  <p>So, which is the simplest way to add hikaricp to my application.properties?</p>