从自动配置中排除DataSourceAutoConfiguration.class时如何注入spring.datasource。*属性

Question

我通过以下链接https://dzone.com/articles/spring-boot-hibernate-multitenancy-implementation在引导应用程序中实现了多租户

为此，我从@SpringBootApplication排除了DatasourceAutoconfiguration.class，例如

@SpringBootApplication(
    exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class})
@EnableScheduling
@EnableJpaRepositories
@EnableAspectJAutoProxy(proxyTargetClass = true)
@ComponentScan("com.mps")
public class MpsServiceClientApplication {

问题是，如何将诸如spring.datasource.tomcat.*类的属性注入到自定义数据源中？ 更精确地说，如何将以下2个属性设置为自定义数据源。

spring.datasource.test-while-idle=true
spring.datasource.test-on-borrow=true

这就是我设置jpa属性的方式。

 final Map<String, Object> hibernateProps = new LinkedHashMap<>();
 hibernateProps.putAll(this.jpaProperties.getProperties());
 final LocalContainerEntityManagerFactoryBean result =
        new LocalContainerEntityManagerFactoryBean();
 result.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
 result.setJpaPropertyMap(hibernateProps);

Answer 1

您必须将这些属性注入@Configuration Bean中并在手动创建Tomcat数据源时进行设置：

import org.apache.tomcat.jdbc.pool.DataSource;

@Value("${spring.datasource.test-on-borrow}")
private boolean testWhileIdle;
@Value("${spring.datasource.test-while-idle}")
private boolean testOnBorrow;

@Bean
public DataSource dataSource(){
    DataSource dataSource = new DataSource();
    dataSource.setTestOnBorrow(testOnBorrow);
    dataSource.setTestWhileIdle(testWhileIdle);
    ... 
    return dataSource;
}