Spring Boot auto configuration for datasource

Question

I try to create Spring Boot app with Hibernate 5 and Postgres 9. Now I have next error:

Parameter 0 of constructor in org.springframework.boot.autoconfigure         


        

Answer 1

You're missing several classes (mostly pool related) on your classpath. The easiest solution is to use the Spring boot starter for JPA, which is:

    org.springframework.boot
    spring-boot-starter-data-jpa

If you do this, you can remove the following dependencies since they're all part of the starter:

    org.springframework
    spring-context
    ${spring.version}


    org.springframework
    spring-tx
    ${spring.version}


    org.springframework
    spring-orm
    ${spring.version}


    org.springframework.data
    spring-data-jpa
    ${spring.data.version}



    org.hibernate
    hibernate-core
    ${hibernate.version}

The alternative solution is to manually add a pool provider to your classpath, the default of spring-boot-starter-data-jpa is tomcat-jdbc (Hikari for Spring boot 2.x) but you can use any connection pool provider you want that is listed in the documentation.