title: Spring Boot autoconfig is still taking Tomcat Datasource instead HikariCP?
body: <p>I have my Spring Boot 1.2.5.RELEASE service and I want to use the <code>HikariCP</code> datasource instead of the default tomcat-jdbc. So, according to this <a href="http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-connect-to-production-database">Spring Boot Reference</a> I understand I just have to exclude <code>tomcat-jdbc</code> from the classpath and add <code>HikariCP</code>.</p>
  
  <p>So this is my pom.xml:</p>
  
  <pre class="lang-xml prettyprint-override"><code>...
  &lt;dependencyManagement&gt;
      ...
      &lt;dependencies&gt;
              &lt;dependency&gt;
                  &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                  &lt;artifactId&gt;spring-boot-starter-data-jpa&lt;/artifactId&gt;
                  &lt;version&gt;${spring-boot.version}&lt;/version&gt;
                  &lt;exclusions&gt;
                      &lt;exclusion&gt;
                          &lt;groupId&gt;org.apache.tomcat&lt;/groupId&gt;
                          &lt;artifactId&gt;tomcat-jdbc&lt;/artifactId&gt;
                      &lt;/exclusion&gt;
                  &lt;/exclusions&gt;
              &lt;/dependency&gt;
              &lt;dependency&gt;
                  &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
                  &lt;artifactId&gt;spring-boot-dependencies&lt;/artifactId&gt;
                  &lt;version&gt;${spring-boot.version}&lt;/version&gt;
                  &lt;type&gt;pom&lt;/type&gt;
                  &lt;scope&gt;import&lt;/scope&gt;
              &lt;/dependency&gt;
      &lt;/dependencies&gt;
  &lt;/dependencyManagement&gt;
  
  &lt;dependencies&gt;
      ...
      &lt;dependency&gt;
          &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
          &lt;artifactId&gt;spring-boot-starter-data-jpa&lt;/artifactId&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;com.zaxxer&lt;/groupId&gt;
          &lt;artifactId&gt;HikariCP&lt;/artifactId&gt;
      &lt;/dependency&gt;
  &lt;/dependencies&gt;
  ...
  </code></pre>
  
  <p>maven dependency tree:</p>
  
  <pre><code>[INFO] --- maven-dependency-plugin:2.1:tree (default-cli) @ myproject-user-manage-webservice ---
  [INFO] com.mybusiness.myproject:myproject-user-manage-webservice:jar:0.0.1-SNAPSHOT
  [INFO] +- com.mybusiness.myproject:myproject-commons:jar:0.0.1-SNAPSHOT:compile
  [INFO] |  \- com.mybusiness.myproject:myproject-core:jar:0.0.1-SNAPSHOT:compile
  [INFO] |     \- com.mybusiness.myproject:myproject-core-commons:jar:0.0.1-SNAPSHOT:compile
  [INFO] +- com.mybusiness.myproject:myproject-api:jar:0.0.1-SNAPSHOT:compile
  [INFO] |  +- com.fasterxml.jackson.core:jackson-annotations:jar:2.4.4:compile (version managed from 2.4.6)
  [INFO] |  \- com.mybusiness.myproject:myproject-framework:jar:0.0.1-SNAPSHOT:compile
  [INFO] |     +- org.springframework.boot:spring-boot-starter-security:jar:1.2.1.RELEASE:compile (version managed from 1.2.5.RELEASE)
  [INFO] |     +- mysql:mysql-connector-java:jar:5.1.34:compile (version managed from 5.1.35)
  [INFO] |     +- com.mybusiness.framework:despegar-fwk-logging:jar:1.4.148:compile
  [INFO] |     +- org.jenkins-ci.plugins:testInProgress-client:jar:1.4:compile
  [INFO] |     |  \- org.json:json:jar:20140107:compile
  [INFO] |     +- commons-io:commons-io:jar:1.3.2:compile
  [INFO] |     \- org.apache.commons:commons-lang3:jar:3.4:compile
  [INFO] +- com.mybusiness.myproject:myproject-user-manage-domain:jar:0.0.1-SNAPSHOT:compile
  [INFO] |  +- org.springframework.boot:spring-boot-starter-aop:jar:1.2.1.RELEASE:compile
  [INFO] |  |  +- org.aspectj:aspectjrt:jar:1.8.4:compile (version managed from 1.8.2)
  [INFO] |  |  \- org.aspectj:aspectjweaver:jar:1.8.4:compile
  [INFO] |  +- org.springframework.boot:spring-boot-starter-data-jpa:jar:1.2.1.RELEASE:compile
  [INFO] |  |  +- org.springframework.boot:spring-boot-starter-jdbc:jar:1.2.1.RELEASE:compile
  [INFO] |  |  |  +- org.springframework:spring-jdbc:jar:4.1.4.RELEASE:compile
  [INFO] |  |  |  \- org.springframework:spring-tx:jar:4.1.4.RELEASE:compile
  [INFO] |  |  +- org.hibernate:hibernate-entitymanager:jar:4.3.7.Final:compile
  [INFO] |  |  |  +- org.jboss.logging:jboss-logging-annotations:jar:1.2.0.Beta1:compile
  [INFO] |  |  |  +- org.hibernate:hibernate-core:jar:4.3.7.Final:compile
  [INFO] |  |  |  |  +- antlr:antlr:jar:2.7.7:compile
  [INFO] |  |  |  |  \- org.jboss:jandex:jar:1.1.0.Final:compile
  [INFO] |  |  |  +- dom4j:dom4j:jar:1.6.1:compile
  [INFO] |  |  |  |  \- xml-apis:xml-apis:jar:1.0.b2:compile
  [INFO] |  |  |  +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.5.Final:compile
  [INFO] |  |  |  \- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
  [INFO] |  |  +- javax.transaction:javax.transaction-api:jar:1.2:compile
  [INFO] |  |  +- org.springframework:spring-orm:jar:4.1.4.RELEASE:compile (version managed from 4.0.7.RELEASE)
  [INFO] |  |  +- org.springframework.data:spring-data-jpa:jar:1.7.1.RELEASE:compile
  [INFO] |  |  |  \- org.springframework.data:spring-data-commons:jar:1.9.1.RELEASE:compile
  [INFO] |  |  \- org.springframework:spring-aspects:jar:4.1.4.RELEASE:compile
  [INFO] |  +- org.springframework.security:spring-security-jwt:jar:1.0.2.RELEASE:compile (version managed from 1.0.3.RELEASE)
  [INFO] |  |  \- org.bouncycastle:bcpkix-jdk15on:jar:1.47:compile
  [INFO] |  |     \- org.bouncycastle:bcprov-jdk15on:jar:1.47:compile
  [INFO] |  \- org.flywaydb:flyway-core:jar:3.0:compile
  [INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.2.1.RELEASE:compile
  [INFO] |  +- org.springframework.boot:spring-boot-starter:jar:1.2.1.RELEASE:compile
  [INFO] |  |  +- org.springframework.boot:spring-boot:jar:1.2.1.RELEASE:compile
  [INFO] |  |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.2.1.RELEASE:compile
  [INFO] |  |  \- org.yaml:snakeyaml:jar:1.14:runtime
  [INFO] |  +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.2.1.RELEASE:compile
  [INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.0.15:compile
  [INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.0.15:compile
  [INFO] |  |  +- org.apache.tomcat.embed:tomcat-embed-logging-juli:jar:8.0.15:compile
  [INFO] |  |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.0.15:compile
  [INFO] |  +- com.fasterxml.jackson.core:jackson-databind:jar:2.4.4:compile
  [INFO] |  |  \- com.fasterxml.jackson.core:jackson-core:jar:2.4.4:compile
  [INFO] |  +- org.hibernate:hibernate-validator:jar:5.1.3.Final:compile
  [INFO] |  |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
  [INFO] |  |  \- org.jboss.logging:jboss-logging:jar:3.1.3.GA:compile
  [INFO] |  +- org.springframework:spring-core:jar:4.1.4.RELEASE:compile
  [INFO] |  +- org.springframework:spring-web:jar:4.1.4.RELEASE:compile
  [INFO] |  \- org.springframework:spring-webmvc:jar:4.1.4.RELEASE:compile
  [INFO] |     \- org.springframework:spring-expression:jar:4.1.4.RELEASE:compile
  [INFO] +- org.springframework.boot:spring-boot-starter-actuator:jar:1.2.1.RELEASE:compile
  [INFO] |  \- org.springframework.boot:spring-boot-actuator:jar:1.2.1.RELEASE:compile
  [INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.2.1.RELEASE:test (scope not updated to compile)
  [INFO] |  +- junit:junit:jar:4.12:test
  [INFO] |  +- org.mockito:mockito-core:jar:1.10.8:test
  [INFO] |  +- org.hamcrest:hamcrest-core:jar:1.3:test
  [INFO] |  +- org.hamcrest:hamcrest-library:jar:1.3:test
  [INFO] |  \- org.springframework:spring-test:jar:4.1.4.RELEASE:test
  [INFO] +- org.springframework.boot:spring-boot-starter-log4j:jar:1.2.1.RELEASE:compile
  [INFO] |  +- org.slf4j:jcl-over-slf4j:jar:1.7.8:compile (version managed from 1.7.7)
  [INFO] |  +- org.slf4j:jul-to-slf4j:jar:1.7.8:compile
  [INFO] |  +- org.slf4j:slf4j-log4j12:jar:1.7.8:compile
  [INFO] |  \- log4j:log4j:jar:1.2.17:compile
  [INFO] +- org.springframework.security.oauth:spring-security-oauth2:jar:2.0.7.RELEASE:compile
  [INFO] |  +- org.springframework:spring-beans:jar:4.1.4.RELEASE:compile
  [INFO] |  +- org.springframework:spring-context:jar:4.1.4.RELEASE:compile
  [INFO] |  +- org.springframework.security:spring-security-core:jar:3.2.5.RELEASE:compile
  [INFO] |  |  \- aopalliance:aopalliance:jar:1.0:compile
  [INFO] |  +- org.springframework.security:spring-security-config:jar:3.2.5.RELEASE:compile
  [INFO] |  +- org.springframework.security:spring-security-web:jar:3.2.5.RELEASE:compile
  [INFO] |  +- commons-codec:commons-codec:jar:1.6:compile
  [INFO] |  \- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.13:compile
  [INFO] |     \- org.codehaus.jackson:jackson-core-asl:jar:1.9.13:compile
  [INFO] +- org.springframework.hateoas:spring-hateoas:jar:0.16.0.RELEASE:compile
  [INFO] |  +- org.springframework:spring-aop:jar:4.1.4.RELEASE:compile (version managed from 3.2.9.RELEASE)
  [INFO] |  +- org.objenesis:objenesis:jar:2.1:compile
  [INFO] |  \- org.slf4j:slf4j-api:jar:1.7.8:compile (version managed from 1.7.7)
  [INFO] +- com.zaxxer:HikariCP:jar:2.2.5:compile
  [INFO] |  \- org.javassist:javassist:jar:3.18.1-GA:compile
  [INFO] +- ma.glasnost.orika:orika-core:jar:1.4.5:compile
  [INFO] |  +- com.thoughtworks.paranamer:paranamer:jar:2.3:compile
  [INFO] |  +- com.googlecode.concurrentlinkedhashmap:concurrentlinkedhashmap-lru:jar:1.2_jdk5:compile
  [INFO] |  \- com.carrotsearch:java-sizeof:jar:0.0.4:compile
  [INFO] +- io.springfox:springfox-swagger2:jar:2.1.1:compile
  [INFO] |  +- org.mapstruct:mapstruct:jar:1.0.0.Beta4:compile
  [INFO] |  +- io.swagger:swagger-annotations:jar:1.5.0:compile
  [INFO] |  +- io.swagger:swagger-models:jar:1.5.0:compile
  [INFO] |  +- io.springfox:springfox-spi:jar:2.1.1:compile
  [INFO] |  |  \- io.springfox:springfox-core:jar:2.1.1:compile
  [INFO] |  +- io.springfox:springfox-schema:jar:2.1.1:compile
  [INFO] |  +- io.springfox:springfox-swagger-common:jar:2.1.1:compile
  [INFO] |  +- io.springfox:springfox-spring-web:jar:2.1.1:compile
  [INFO] |  +- com.google.guava:guava:jar:18.0:compile
  [INFO] |  +- com.fasterxml:classmate:jar:1.2.0:compile
  [INFO] |  +- joda-time:joda-time:jar:2.5:compile
  [INFO] |  +- org.springframework.plugin:spring-plugin-core:jar:1.2.0.RELEASE:compile
  [INFO] |  \- org.springframework.plugin:spring-plugin-metadata:jar:1.2.0.RELEASE:compile
  [INFO] \- io.springfox:springfox-swagger-ui:jar:2.1.1:compile
  </code></pre>
  
  <p>So, <code>HikariCP</code> is definitely in tha classpath and <code>tomcat-jdbc</code> is not. But when I launch the service, <code>autoconfig</code> is still creating org.apache.tomcat.jdbc.pool.DataSource instead of a <code>HikariCP</code> one.</p>
  
  <p>What I am doing wrong?  </p>
  
  <hr>
  
  <h2>EDIT</h2>
  
  <p>This is my application launcher:</p>
  
  <pre><code>@SpringBootApplication
  @EnableHypermediaSupport(type = {HypermediaType.HAL})
  public class ApplicationRunner {
  
      public static void main(String[] args) {
          SpringApplication.run(ApplicationRunner.class, args);
      }
  
  }
  </code></pre>