Spring Boot JPA MySQL : Failed to determine a suitable driver class - mysql

Question

I am creating an application using Spring Boot JPA, I am using MySQL as a database.
Following is my application.properties
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/mydb
spring.datasource.username=root
spring.datasource.password=
spring.jpa.database-platform=org.hibernate.dialect.MySQL8Dialect
I have added following dependencies
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.17</version>
</dependency>
When I checked in debug logs I can see mysql java connector in my classpath but still I am getting following errors
2019-07-29 10:03:00.742 INFO 10356 --- [ main]
o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring
embedded WebApplicationContext 2019-07-29 10:03:00.742 INFO 10356 ---
[ main] o.s.web.context.ContextLoader : Root
WebApplicationContext: initialization completed in 1534 ms 2019-07-29
10:03:00.789 WARN 10356 --- [ main]
ConfigServletWebServerApplicationContext : Exception encountered
during context initialization - cancelling refresh attempt:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name
'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration':
Unsatisfied dependency expressed through constructor parameter 0;
nested exception is
org.springframework.beans.factory.BeanCreationException: Error
creating bean with name 'dataSource' defined in class path resource
[org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]:
Bean instantiation via factory method failed; nested exception is
org.springframework.beans.BeanInstantiationException: Failed to
instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method
'dataSource' threw exception; nested exception is
org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException:
Failed to determine a suitable driver class 2019-07-29 10:03:00.789
INFO 10356 --- [ main]
o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2019-07-29 10:03:00.805 INFO 10356 --- [ main]
ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report
re-run your application with 'debug' enabled. 2019-07-29 10:03:00.805
ERROR 10356 --- [ main]
o.s.b.d.LoggingFailureAnalysisReporter :
*************************** APPLICATION FAILED TO START
Description:
Failed to configure a DataSource: 'url' attribute is not specified and
no embedded datasource could be configured.
Reason: Failed to determine a suitable driver class
Action:
Consider the following: If you want an embedded database (H2, HSQL or
Derby), please put it on the classpath. If you have database settings
to be loaded from a particular profile you may need to activate it (no
profiles are currently active).

Answer 1

Spring Boot auto-configuration tries to configure the beans automatically based on the dependencies added to the classpath. Since you have the JPA dependency on your classpath, Spring Boot tries to automatically configure a JPA DataSource. The problem is, you haven’t given Spring the complete information it needs to perform the auto-configuration.
Add this missing property to your application.properties file, so that spring can autoconfigure
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
Another way you can define your data source programmatically, by using the utility builder class DataSourceBuilder. For that you need to provide the database URL, username, password, and the SQL driver information to create your data source:
#Configuration
public class DatasourceConfig {
#Bean
public DataSource datasource() {
return DataSourceBuilder.create()
.driverClassName("com.mysql.cj.jdbc.Driver")
.url("jdbc:mysql://localhost:3306/myDb")
.username("root")
.password("pass")
.build();
}
}

Answer 2

I had the same problem, I resolved it by doing right click on the project, maven/update project, then you should select your project and accept.

Answer 3

I had this problem too. My solution is : open module settings,and select resources,and right click it ,and select "Test Resources". Then it's solved.

Answer 4

Spring Autoconfigure looks for 2 properties to load the appropriate driver,
spring.datasource.driverClassName (in this case the value would be 'com.mysql.cj.jdbc.Driver' from MySQL connector 4.4.1.3 onwards)
spring.datasource.url (in this case it is jdbc:mysql://localhost:3306/mydb)
Actually Spring Autoconfigure just need spring.datasource.url and it can derive the driver class name from there.

Answer 5

Your application organization looked like :
Commons
->
Module1
Commons was a parent to Module1.
I had created a BaseEntity having JPA annotations in my commons module. The commons dependency was specified as
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
Once I added the provided
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<scope>provided</scope>
</dependency>
The issue got resolved for me. Unfortunately

Answer 6

change:
spring.datasource.url=jdbc:mysql://localhost:3306/mydb
to:
spring.datasource.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/mydb

Answer 7

It was some mistake in my configuration which I couldn't detect, I re-created same project and things started working