amazon-web-services - 通过 JPA spring boot 访问 AWS athena

Question

我正在尝试使用 spring boot jpa 数据源使用 AWS athena。
我尝试使用给定的属性设置数据源。

    spring.datasource.driver-class-name=com.amazonaws.athena.jdbc.AthenaDriver
    spring.datasource.url=jdbc:awsathena://athena.us-east-1.amazonaws.com:443/default
    spring.datasource.username=*****
    spring.datasource.password=***
    spring.datasource.tomcat.connectionProperties=s3_staging_dir=*****

我低于异常

    Caused by:org.springframework.beans.BeanInstantiationException:    Failed to instantiate [org.springframework.orm.jpa.JpaVendorAdapter]: Factory method 'jpaVendorAdapter' threw exception; nested exception is java.lang.IllegalArgumentException: URL must start with 'jdbc'
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(Constructo`enter code here`rResolver.java:588) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 51 common frames omitted
    Caused by: java.lang.IllegalArgumentException: URL must start with 'jdbc'
at org.springframework.util.Assert.isTrue(Assert.java:92) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.boot.jdbc.DatabaseDriver.fromJdbcUrl(DatabaseDriver.java:268) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup.getDatabase(DatabaseLookup.java:73) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.JpaProperties.determineDatabase(JpaProperties.java:139) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.jpaVendorAdapter(JpaBaseConfiguration.java:105) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$720f8624.CGLIB$jpaVendorAdapter$4(<generated>) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerBySpringCGLIB$$720f8624$$FastClassBySpringCGLIB$$9766cf.invoke(<generated>) ~[spring-boot-autoconfigure-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 

Answer 1

默认情况下，Spring boot 会自动检测哪个 Hibernate Dialect基于从 JDBC 驱动程序检索到的 Datasource 的元数据来使用。

此错误是由于 Athena JDBC 驱动程序无法获取相关元数据。不确定为什么会失败，但您可以绕过此检测并通过声明 JpaVendorAdapter 来明确声明自己要使用哪种 Hibernate 方言| bean 角，扁 bean :

@Bean
public JpaVendorAdapter jpaVendorAdapter(JpaProperties properties) {
    AbstractJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
    adapter.setShowSql(properties.isShowSql());
    adapter.setGenerateDdl(properties.isGenerateDdl());
    return adapter;
}

我保留所有默认行为，但只是禁用自动检测方言

并在 application.properties 中定义方言:

spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.XXXXXX

但关键是我怀疑 Athena 是否可以与 Hibernate 一起使用，因为我找不到 Athena 的现有方言。所以我的建议是:

试试另一个数据库中的方言，它的 SQL 语法类似于 Athena。它不适用于 some cases. 也就不足为奇了。

自己实现雅典娜方言。