DataSource error with Springboot - mysql

Question

I have an issue when running a spring boot project of mine:
I am using Vaadin for UI and Maven for dependecies. The Database is a MySQL one and I have followed the instructions from (https://spring.io/guides/gs/accessing-data-mysql/) closely.
Description:
Parameter 0 of constructor in
org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration
required a bean of type 'javax.sql.DataSource' that could not be
found.
- Bean method 'dataSource' not loaded because #ConditionalOnProperty (spring.datasource.jndi-name) did not find property 'jndi-name'
- Bean method 'dataSource' not loaded because #ConditionalOnBean (types: org.springframework.boot.jta.XADataSourceWrapper;
SearchStrategy: all) did not find any beans
Action:
Consider revisiting the conditions above or defining a bean of type
'javax.sql.DataSource' in your configuration.
With --debug:
Full auto-configuration report (too long for this post)
https://pastebin.com/DEsAkpLi
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ethereum</groupId>
<artifactId>TradeSafe</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>TradeSafe</name>
<description>TradeSafe WebService</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.web3j</groupId>
<artifactId>core</artifactId>
<version>3.2.0</version>
</dependency>
<dependency>
<groupId>org.web3j</groupId>
<artifactId>web3j-spring-boot-starter</artifactId>
<version>1.5.0</version>
</dependency>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-spring-boot-starter</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>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.vaadin</groupId>
<artifactId>vaadin-bom</artifactId>
<version>8.0.0</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>
</repository>
<repository>
<id>org.jboss.repository.releases</id>
<name>JBoss Maven Release Repository</name>
<url>https://repository.jboss.org/nexus/content/repositories/releases</url>
</repository>
</repositories>
</project>
TradeLayout.java
package ethereum.tradesafe;
import java.util.List;
import javax.annotation.PostConstruct;
import org.springframework.beans.factory.annotation.Autowired;
import com.vaadin.spring.annotation.SpringComponent;
import com.vaadin.ui.GridLayout;
#SpringComponent
public class TradeLayout extends GridLayout{
#Autowired
private TradeRepo repo;
#PostConstruct
void init() {
update();
}
private void setTrades(List<Trade> trades) {
removeAllComponents();
trades.forEach(trade-> addComponent(new TradeItemLayout(trade)));
}
public Object add(Trade trade) {
repo.save(trade);
update();
return null;
}
private void update() {
setTrades((List<Trade>) repo.findAll());
}
}
TradeRepo.java
package ethereum.tradesafe;
import org.springframework.data.repository.CrudRepository;
public interface TradeRepo extends CrudRepository<Trade, Long>{
}
application.properties
spring.jpa.hibernate.ddl-auto=none
spring.datasource.url=jdbc:mysql://nottheproblem/db_tradesafe
spring.datasource.username=nottheproblem
spring.datasource.password=nottheproblem

Answer 1

Try to add #Repository annotation above the TradeRepo, and also rename it to TradeRepository

Answer 2

Solved this error by adding (missing in my case) maven dependency:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>