Question

我试图在maven项目中使用jdbc连接到Amazon Athena，但是正在引发异常。我认为这个课程没有找到。在雅典娜的指南中，它说：

将JDBC属性aws_credentials_provider_class设置为等于类名，并将其包含在类路径中。 (1)

由于我使用eclipse，我认为该类已经在类路径中，但显然不是。我在一个简单的java项目（不是maven）中测试了代码并且它可以工作。

AmazonCredentialsProvider.java ：

package athena;
import com.amazonaws.auth.AWSCredentials;

public class AmazonCredentials implements AWSCredentials {
    @Override public String getAWSAccessKeyId() { return "..."; }
    @Override public String getAWSSecretKey() { return "..."; }
}

AmazonCredentialsProvider.java ：

package athena;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;

public class AmazonCredentialsProvider implements AWSCredentialsProvider {
    @Override public AWSCredentials getCredentials() { return new AmazonCredentials(); }
    @Override public void refresh() {}
}

连接的代码段：

Class.forName("com.amazonaws.athena.jdbc.AthenaDriver");

Properties properties = new Properties();
properties.setProperty("user", user);
properties.setProperty("password", password);

properties.setProperty("aws_credentials_provider_class", "athena.AmazonCredentialsProvider");
Connection connection = DriverManager.getConnection("jdbc:awsathena://athena." + region + ".amazonaws.com:443", properties);

例外：

java.sql.SQLException：无法加载AWS凭据提供程序类： athena.AmazonCredentials提供者 com.amazonaws.athena.jdbc.AthenaDriverPropertiesFactory.lambda $ parseProperties $ 2（AthenaDriverPropertiesFactory.java:52）在 com.amazonaws.athena.jdbc.AthenaDriverPropertiesFactory.setClientConfigProperty（AthenaDriverPropertiesFactory.java:159）在 com.amazonaws.athena.jdbc.AthenaDriverPropertiesFactory.parseProperties（AthenaDriverPropertiesFactory.java:40）在 com.amazonaws.athena.jdbc.AthenaDriver.connect（AthenaDriver.java:110）在java.sql.DriverManager.getConnection（未知来源）at java.sql.DriverManager.getConnection（未知来源）at athena.Athena。（Athena.java:94）at services.GraphService.verify（GraphService.java:194）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）at sun.reflect.DelegatingMethodAccessorImpl.invoke（未知来源）at java.lang.reflect.Method.invoke（未知来源）at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda $静态$ 0（ResourceMethodInvocationHandlerFactory.java:76）在 org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher $ 1.run（AbstractJavaResourceMethodDispatcher.java:148）在 org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke（AbstractJavaResourceMethodDispatcher.java:191）在 org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider $ VoidOutInvoker.doDispatch（JavaResourceMethodDispatcherProvider.java:183）在 org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch（AbstractJavaResourceMethodDispatcher.java:103）在 org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke（ResourceMethodInvoker.java:493）在 org.glassfish.jersey.server.model.ResourceMethodInvoker.lambda $ $申请0（ResourceMethodInvoker.java:405）在 org.glassfish.jersey.server.ServerRuntime $ AsyncResponder $ 2 $ 1.run（ServerRuntime.java:843）在org.glassfish.jersey.internal.Errors $ 1.call（Errors.java:272）at at org.glassfish.jersey.internal.Errors $ 1.call（Errors.java:268）at org.glassfish.jersey.internal.Errors.process（Errors.java:316）at org.glassfish.jersey.internal.Errors.process（Errors.java:298）at org.glassfish.jersey.internal.Errors.process（Errors.java:268）at org.glassfish.jersey.process.internal.RequestScope.runInScope（RequestScope.java:289）在 org.glassfish.jersey.server.ServerRuntime $ AsyncResponder $ 2.run（ServerRuntime.java:838）在java.util.concurrent.Executors $ RunnableAdapter.call（未知来自）java.util.concurrent.FutureTask.run（未知来源）at java.util.concurrent.ThreadPoolExecutor.runWorker（未知来源）at java.util.concurrent.ThreadPoolExecutor $ Worker.run（未知来源）at java.lang.Thread.run（未知来源）引起： java.lang.ClassNotFoundException：athena.AmazonCredentialsProvider at java.net.URLClassLoader.findClass（未知来源）at java.lang.ClassLoader.loadClass（未知来源）at java.lang.ClassLoader.loadClass（未知来源）at java.lang.Class.forName0（Native Method）at java.lang.Class.forName（未知来源）at com.amazonaws.athena.jdbc.AthenaDriverPropertiesFactory.lambda $ parseProperties $ 2（AthenaDriverPropertiesFactory.java:44） ......还有31个

有谁知道如何解决它？

Answer 1

您使用的是最新版本的JDBC驱动程序吗？

如果是，请尝试按照以下说明操作：

https://docs.aws.amazon.com/redshift/latest/mgmt/configure-jdbc-connection-with-maven.html

在maven项目中使用JDBC连接到Athena

1 个答案: