Question

如何配置Spring Boot以连接到基于网络的Derby数据库？我不希望使用嵌入式Derby DB，但是它一直在尝试加载EmbeddedDriver类。

java.sql.SQLException: Unable to load class: org.apache.derby.jdbc.EmbeddedDriver from ClassLoader:sun.misc.Launcher$AppClassLoader@4d6c3502;ClassLoader:sun.misc.Launcher$AppClassLoader@4d6c3502
    at org.apache.tomcat.jdbc.pool.PooledConnection.connectUsingDriver(PooledConnection.java:280)

我的application.properties中有以下内容：

spring.datasource.url=jdbc:derby://localhost:1527/MyTestDb
spring.datasource.username=Eric
spring.datasource.password=eric
spring.datasource.initialize=false

我的pom有以下内容：

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.derby</groupId>
        <artifactId>derbyclient</artifactId>
        <version>10.11.1.1</version>
    </dependency>

我的Application.java类是样板文件：

@EnableAutoConfiguration
@Configuration
@ComponentScan
@EnableCaching
public class Application {

   public static void main(String[] args) {
        SpringApplication app = new SpringApplication(Application.class);
        app.setShowBanner(false);
       app.run(args);
    }
}

我还需要做一些额外的特殊配置吗？

Answer 1

正如@XtremeBiker所提到的那样，我在application.properties文件中缺少驱动程序类名，以强制Spring使用客户端驱动程序而不是嵌入式驱动程序（默认情况下）

spring.datasource.url=jdbc:derby://localhost:1527/MyTestDb
spring.datasource.username=Eric
spring.datasource.password=eric
spring.datasource.initialize=false
spring.datasource.driver-class-name=org.apache.derby.jdbc.ClientDriver

Answer 2

以下配置对我有用

application.properties

spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.DerbyTenSevenDialect
spring.jpa.database-platform=org.hibernate.dialect.DerbyTenSevenDialect
    
spring.datasource.url=jdbc:derby://localhost:1527/MyDbTest
spring.datasource.driver-class-name=org.apache.derby.jdbc.ClientDriver
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

pom.xml

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

Spring Boot非嵌入式Derby数据库？

2 个答案: