HTTP 500 - Cannot create JDBC driver of class '' for connect URL 'null'

Question

I have been searching to fix that problem for 3 days reading forums... Then I decided to ask for some help. Nedless to say that your help would be highly appreciated :-)

Answer 1

I am using Eclipse STS 3.9.3, tomcat 8.5 and Spring Boot 2.0.0.RELEASE

I spent my entire morning about this problem. So, I did a lot of things to solve:

1. Remove jdbc dependence from my pom.

2. Declaration resource TOMCAT_HOME/CONF/server.xml whit factory:

   
    ...
      
    ...
   
   

   I realized that I was using Eclipse STS. The tomcat resource on server.xml only works after I put the resource declaration in server.xml inside of "Tomcat v8.5 Server at localhost-config" folder in my Server project. Did not work on TOMCAT_HOME/conf folder in server.xml file.

3. Change my application.yml to:

   spring:
     datasource:
       platform: postgres
       jndi-name: java:comp/env/jdbc/postgres_jndi
       type: javax.sql.DataSource
       driver-class-name: org.postgresql.Driver
     jpa:
       hibernate:
         ddl-auto: validate
       database-platform: org.hibernate.dialect.PostgreSQL9Dialect
       database: POSTGRESQL
       show-sql: true
       #Method org.postgresql.jdbc.PgConnection.createClob() is not yet implemented.
       properties:
         hibernate:
           temp:
             use_jdbc_metadata_defaults: false
   

A application.properties will be like:

    spring.datasource.platform= postgres
    spring.datasource.jndi-name= java:comp/env/jdbc/postgres_jndi
    spring.datasource.type= javax.sql.DataSource
    spring.datasource.driver-class-name= org.postgresql.Driver
    spring.jpa.hibernate.ddl-auto= validate
    spring.jpa.hibernatedatabase-platform= org.hibernate.dialect.PostgreSQL9Dialect
    spring.jpa.database= POSTGRESQL
    spring.jpa.show-sql= true
    spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false

4. Define a context.xml file in src/main/webapp/META-INF/context.xml with definition:

5. Put the file postgresql-42.2.2.jar in the TOMCAT_HOME/lib