java Spring Boot：无法配置
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Spring Boot: Unable to configure
提问by Forkmohit
It seems(maybe not) that, SpringBoot is unable to load application.properties file which resides on src/main/resources. What extra config I need to add to boot my app?
似乎（也许不是），SpringBoot 无法加载位于 src/main/resources 上的 application.properties 文件。我需要添加什么额外的配置来启动我的应用程序？
Error Trace:
错误跟踪：
Caused by:
造成的：
org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Cannot determine embedded database driver class for database type NONE. If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).
org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException：无法确定数据库类型 NONE 的嵌入式数据库驱动程序类。如果您想要一个嵌入式数据库，请在类路径上放置一个受支持的数据库。如果您有要从特定配置文件加载的数据库设置，您可能需要激活它（当前没有配置文件处于活动状态）。
MembersApplication.java
成员应用程序.java
@SpringBootApplication
public class MembersApplication {
public static void main(String[] args)
{
SpringApplication.run(MembersApplication.class, args);
}
}
DatabaseConfig.java
数据库配置文件
@Configuration
@EnableTransactionManagement
public class DatabaseConfig {
@Value("${db.driver}")
private String DB_DRIVER;
@Value("${db.password}")
private String DB_PASSWORD;
@Value("${db.url}")
private String DB_URL;
@Value("${db.username}")
private String DB_USERNAME;
@Value("${hibernate.dialect}")
private String HIBERNATE_DIALECT;
@Value("${hibernate.show_sql}")
private String HIBERNATE_SHOW_SQL;
@Value("${hibernate.hbm2ddl.auto}")
private String HIBERNATE_HBM2DDL_AUTO;
@Value("${entitymanager.packagesToScan}")
private String ENTITYMANAGER_PACKAGES_TO_SCAN;
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName(DB_DRIVER);
dataSource.setUrl(DB_URL);
dataSource.setUsername(DB_USERNAME);
dataSource.setPassword(DB_PASSWORD);
return dataSource;
}
@Bean
public LocalSessionFactoryBean sessionFactory() {
LocalSessionFactoryBean sessionFactoryBean = new LocalSessionFactoryBean();
sessionFactoryBean.setDataSource(dataSource());
sessionFactoryBean.setPackagesToScan(ENTITYMANAGER_PACKAGES_TO_SCAN);
Properties hibernateProperties = new Properties();
hibernateProperties.put("hibernate.dialect", HIBERNATE_DIALECT);
hibernateProperties.put("hibernate.show_sql", HIBERNATE_SHOW_SQL);
hibernateProperties.put("hibernate.hbm2ddl.auto", HIBERNATE_HBM2DDL_AUTO);
sessionFactoryBean.setHibernateProperties(hibernateProperties);
return sessionFactoryBean;
}
@Bean
public HibernateTransactionManager transactionManager() {
HibernateTransactionManager transactionManager =
new HibernateTransactionManager();
transactionManager.setSessionFactory(sessionFactory().getObject());
return transactionManager;
}
采纳答案by luboskrnac
You are missing DB JAR on your classpath. If you are using Maven/Gradle, just include JDBC driver dependency into your POM/gradle file.
您的类路径中缺少 DB JAR。如果您使用 Maven/Gradle，只需将 JDBC 驱动程序依赖项包含到您的 POM/gradle 文件中。
