Java Spring配置的问题

我有一个使用Java Netbeans和Spring框架的小程序，但我有以下错误：

org.springframework.beans.factory.BeanCreationException:创建名为“config”的bean时出错：自动连线依赖项的注入失败；嵌套异常为java.lang.IllegalArgumentException:无法解析值“${spring.datasource.driverClassName}”中的占位符“spring.datasource.driverClassName”

我使用以下代码创建了Config.Java：

@Configuration  
@EnableTransactionManagement  
@EnableAutoConfiguration(exclude = { HibernateJpaAutoConfiguration.class})  
@ComponentScans(value = { @ComponentScan("boot.entry"),  
          @ComponentScan("Model"),  
          @ComponentScan("Controller"),  
          @ComponentScan("DAO"),  
          @ComponentScan("Miscallaneous"),  
          @ComponentScan("Service")})  
public class Config {
    @Value("${spring.datasource.driverClassName}")  
        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 LocalSessionFactoryBean sessionFactory() {  
            LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();  
            sessionFactory.setDataSource(dataSource());  
            sessionFactory.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);  
            sessionFactory.setHibernateProperties(hibernateProperties);  
            return sessionFactory;  
        }  
  
        @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 HibernateTransactionManager transactionManager() {  
            HibernateTransactionManager txManager = new HibernateTransactionManager();  
            txManager.setSessionFactory(sessionFactory().getObject());  
            return txManager;  
        }  
          
        @Bean  
        public InternalResourceViewResolver jspViewResolver() {  
            InternalResourceViewResolver resolver= new InternalResourceViewResolver();  
            resolver.setPrefix("/views/");  
            resolver.setSuffix(".jsp");  
            return resolver;  
        }
}

以及我的

aplication.properties

和此代码（用于SQL Server）：

---

我正在尝试使用带有Angular的web服务连接到SQL Server。

这有帮助吗？删除

Config

类并阅读Spring引导参考文档。Spring Boot已经为您完成了所有这些。基本上，他需要自定义配置，因此删除config类不会有任何帮助。您是否也尝试过删除数据源和事务的自动配置？您希望通过Config类对其进行配置。请尝试此@EnableAutoConfiguration（exclude={DataSourceAutoConfiguration.class，DataSourceTransactionManagerAutoConfiguration.class，hibernatejpaaautoconfiguration.class}）

spring.datasource.driverClassName=com.microsoft.sqlserver.jdbc.SQLServerDriver
spring.datasource.url=jdbc:sqlserver://localhost;databaseName=Prueba
spring.datasource.username=UserLogin
spring.datasource.password=Miguel123
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.format_sql = true

## Hibernate Properties
# The SQL dialect makes Hibernate generate better SQL for the chosen database
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.SQLServer2012Dialect

# Hibernate ddl auto (create, create-drop, validate, update)
spring.jpa.hibernate.ddl-auto = update