Failed to determine a suitable driver class

segue os arquivos:

pom:

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>med.voll</groupId>
    <artifactId>api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>api</name>
    <description>API Rest da aplicação Voll.med</description>
    <properties>
        <java.version>18</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-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>

        <dependency>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-validation</artifactId>
        </dependency>

        <dependency>
          <groupId>org.flywaydb</groupId>
          <artifactId>flyway-core</artifactId>
        </dependency>

        <dependency>
          <groupId>org.flywaydb</groupId>
          <artifactId>flyway-mysql</artifactId>
        </dependency>

        <dependency>
          <groupId>com.mysql</groupId>
          <artifactId>mysql-connector-j</artifactId>
          <scope>runtime</scope>
        </dependency>

        <dependency>
          <groupId>jakarta.platform</groupId>
          <artifactId>jakarta.jakartaee-api</artifactId>
          <version>9.1.0</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

application.properties:

spring.datasource.url=jdbc:mysql://localhost/vollmed_api
spring.datasource.username=Klauber
spring.datasource.password=SerprO7955

Já estava funcionando até a listagem de médicos. na listagem que tive que trocar o eclipse.

Oi Klauber!

Tem uma dependência a mais no seu projeto. Remova ela do pom.xml:

<dependency>
    <groupId>jakarta.platform</groupId>
    <artifactId>jakarta.jakartaee-api</artifactId>
    <version>9.1.0</version>
</dependency>

Você instalou o Lombok nesse novo Eclipse? (no Eclipse ele não vem instalado por padrão).

Está com algum erro de compilação no projeto? Manda um print da estrutura do seu projeto.

instalei o Lombok.

segue a estrutura do projeto:

Está tudo certo. O erro é por não ter encontrado a propriedade spring.datasource.url no application.properties, mas no seu projeto ela está declarada.

Pode ser então que o projeto não pegou as mudanças. Verifica no menu superior do Eclipse Project se a opção Build Automatically está marcada.

Pare o projeto e vá no meu superior Project -> Clean para realizar um build no projeto, e depois clica com o botão direito no projeto e vá em: Maven -> Update project, para o maven atualizar o projeto. Depois disso rode novamenteo projeto para ver se resolveu.

O Build Automatically está marcado. Fiz novamente o Project -> Clean e o Maven -> Update project. Continua dando o mesmo erro.

O engraçado é que esse mesmo projeto estava funcionando corretamente antes. Só troquei o Eclipse e importei o projeto. Começou o erro.

Criei um novo workspace. recomecei o projeto do zero pelo start.spring.io e quando chegou no ponto da conexão com o banco deu o mesmo erro. fechei o eclipse e abri o projeto no eclipse antigo, voltei a versão do spring boot pra 2.7.7 e ele conseguiu conectar no banco. fechei tudo e abri o projeto com essa versão antiga no novo eclipse e deu o mesmo erro novamente. Agora eu buguei total... rsrs

4.0.0 org.springframework.boot spring-boot-starter-parent 2.7.7 med.voll api 0.0.1-SNAPSHOT api API Rest da aplicação Voll.med <java.version>11</java.version> org.springframework.boot spring-boot-starter-web

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-validation</artifactId>
    </dependency>
    <dependency>
        <groupId>org.flywaydb</groupId>
        <artifactId>flyway-core</artifactId>
    </dependency>
    <dependency>
        <groupId>org.flywaydb</groupId>
        <artifactId>flyway-mysql</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <excludes>
                    <exclude>
                        <groupId>org.projectlombok</groupId>
                        <artifactId>lombok</artifactId>
                    </exclude>
                </excludes>
            </configuration>
        </plugin>
    </plugins>
</build>

com a versão 2022-12 (4.26.0) do eclipse:

10:04:51.253 [Thread-0] DEBUG org.springframework.boot.devtools.restart.classloader.RestartClassLoader - Created RestartClassLoader org.springframework.boot.devtools.restart.classloader.RestartClassLoader@578998a

. __ _ __ _ _ /\ / _'_ _ _ _()_ _ __ _ \ \ \ ( ( )___ | ' | '| | ' / ` | \ \ \ \/ ___)| |)| | | | | || (| | ) ) ) ) ' |__| .|| ||_| |_, | / / / / =========||==============|__/=//// :: Spring Boot :: (v2.7.7)

2022-12-30 10:04:51.547 INFO 19555 --- [ restartedMain] med.voll.api.ApiApplication : Starting ApiApplication using Java 11.0.15 on serpro-1564354 with PID 19555 (/home/66930847534/workspaceSpringBoot/api/target/classes started by 66930847534 in /home/66930847534/workspaceSpringBoot/api) 2022-12-30 10:04:51.550 INFO 19555 --- [ restartedMain] med.voll.api.ApiApplication : No active profile set, falling back to 1 default profile: "default" 2022-12-30 10:04:51.597 INFO 19555 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable 2022-12-30 10:04:51.597 INFO 19555 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG' 2022-12-30 10:04:52.093 INFO 19555 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2022-12-30 10:04:52.104 INFO 19555 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 4 ms. Found 0 JPA repository interfaces. 2022-12-30 10:04:52.589 INFO 19555 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2022-12-30 10:04:52.603 INFO 19555 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2022-12-30 10:04:52.604 INFO 19555 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.70] 2022-12-30 10:04:52.656 INFO 19555 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2022-12-30 10:04:52.656 INFO 19555 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1058 ms 2022-12-30 10:04:52.728 WARN 19555 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flyway' defined in class path resource [org/springframework/boot/autoconfigure/flyway/FlywayAutoConfiguration$FlywayConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.flywaydb.core.Flyway]: Factory method 'flyway' threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$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 2022-12-30 10:04:52.731 INFO 19555 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat] 2022-12-30 10:04:52.753 INFO 19555 --- [ restartedMain] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled. 2022-12-30 10:04:52.771 ERROR 19555 --- [ restartedMain] 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).

o mesmo projeto com a versão Version: 2018-09 (4.9.0) do eclipse:

10:21:41.445 [Thread-0] DEBUG org.springframework.boot.devtools.restart.classloader.RestartClassLoader - Created RestartClassLoader org.springframework.boot.devtools.restart.classloader.RestartClassLoader@578998a

. __ _ __ _ _ /\ / _'_ _ _ _()_ _ __ _ \ \ \ ( ( )___ | ' | '| | ' / ` | \ \ \ \/ ___)| |)| | | | | || (| | ) ) ) ) ' |__| .|| ||_| |_, | / / / / =========||==============|__/=//// :: Spring Boot :: (v2.7.7)

2022-12-30 10:21:41.733 INFO 20634 --- [ restartedMain] med.voll.api.ApiApplication : Starting ApiApplication using Java 11.0.15 on serpro-1564354 with PID 20634 (/home/66930847534/workspaceSpringBoot/api/target/classes started by 66930847534 in /home/66930847534/workspaceSpringBoot/api) 2022-12-30 10:21:41.734 INFO 20634 --- [ restartedMain] med.voll.api.ApiApplication : No active profile set, falling back to 1 default profile: "default" 2022-12-30 10:21:41.777 INFO 20634 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable 2022-12-30 10:21:41.778 INFO 20634 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG' 2022-12-30 10:21:42.271 INFO 20634 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2022-12-30 10:21:42.284 INFO 20634 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 4 ms. Found 0 JPA repository interfaces. 2022-12-30 10:21:42.794 INFO 20634 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2022-12-30 10:21:42.803 INFO 20634 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2022-12-30 10:21:42.803 INFO 20634 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.70] 2022-12-30 10:21:42.867 INFO 20634 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2022-12-30 10:21:42.867 INFO 20634 --- [ restartedMain] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1089 ms 2022-12-30 10:21:43.016 INFO 20634 --- [ restartedMain] o.f.c.internal.license.VersionPrinter : Flyway Community Edition 8.5.13 by Redgate 2022-12-30 10:21:43.016 INFO 20634 --- [ restartedMain] o.f.c.internal.license.VersionPrinter : See what's new here: https://flywaydb.org/documentation/learnmore/releaseNotes#8.5.13 2022-12-30 10:21:43.016 INFO 20634 --- [ restartedMain] o.f.c.internal.license.VersionPrinter : 2022-12-30 10:21:43.021 INFO 20634 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... 2022-12-30 10:21:43.280 INFO 20634 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed. 2022-12-30 10:21:43.302 INFO 20634 --- [ restartedMain] o.f.c.i.database.base.BaseDatabaseType : Database: jdbc:mysql://localhost/vollmed_api (MySQL 8.0) 2022-12-30 10:21:43.338 INFO 20634 --- [ restartedMain] o.f.core.internal.command.DbValidate : Successfully validated 3 migrations (execution time 00:00.013s) 2022-12-30 10:21:43.348 INFO 20634 --- [ restartedMain] o.f.core.internal.command.DbMigrate : Current version of schema vollmed_api: 3 2022-12-30 10:21:43.348 ERROR 20634 --- [ restartedMain] o.f.core.internal.command.DbMigrate : Schema vollmed_api has version 3, but no migration could be resolved in the configured locations ! 2022-12-30 10:21:43.349 INFO 20634 --- [ restartedMain] o.f.core.internal.command.DbMigrate : Schema vollmed_api is up to date. No migration necessary. 2022-12-30 10:21:43.423 INFO 20634 --- [ restartedMain] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default] 2022-12-30 10:21:43.473 INFO 20634 --- [ restartedMain] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.6.14.Final 2022-12-30 10:21:43.608 INFO 20634 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final}

continuação do log pois estourou o limite de caracteres:

2022-12-30 10:21:43.608 INFO 20634 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.2.Final} 2022-12-30 10:21:43.715 INFO 20634 --- [ restartedMain] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect 2022-12-30 10:21:43.864 INFO 20634 --- [ restartedMain] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform] 2022-12-30 10:21:43.872 INFO 20634 --- [ restartedMain] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 2022-12-30 10:21:43.915 WARN 20634 --- [ restartedMain] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning 2022-12-30 10:21:44.198 INFO 20634 --- [ restartedMain] o.s.b.d.a.OptionalLiveReloadServer : LiveReload server is running on port 35729 2022-12-30 10:21:44.217 INFO 20634 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path '' 2022-12-30 10:21:44.224 INFO 20634 --- [ restartedMain] med.voll.api.ApiApplication : Started ApiApplication in 2.772 seconds (JVM running for 3.176)

Rodrigo,

criei a classe testaConexao que você sugeriu em outro tópico e funcionou aqui... mas com a aplicação continua dando o mesmo erro

import java.sql.Connection; import java.sql.DriverManager;

public class TestaConexao {

public static void main(String[] args) {
    try {
        Connection con = DriverManager.getConnection("jdbc:mysql://localhost/vollmed_api", "Klauber", "SerprO7955");
        System.out.println("conectado com sucesso!");
    } catch (Exception e) {
        e.printStackTrace();
    }
}

}

Oi Kaluber!

Pois é, está muito estranho isso de funcionar em uma versão do Eclipse e em outra não :D

Consegue compartilhar o teu projeto (via GitHub ou link do Google Drive)?

https://drive.google.com/file/d/1XAa1HXreceZUkrf3vB7Xv9_XzK5tJjFp/view?usp=sharing

Testei aqui e funcionou no meu Eclipse (versão 2022.06):

A única coisa que alterei foi a versão do Java para a 17, e o username/password de acordo com o meu MySQL.