com.zaxxer.hikari.pool.HikariPool$PoolInitializationException：尝试使用 Redshift 设置 HikraCP 时无法初始化池

Question

我正在尝试使用 HikariCP 和 AWS Redshift 设置 JDBC 连接池，如下所示：

public class RedshiftConnector {

private static HikariDataSource dataSource;
private static int poolSize = 5;

public static void init() throws SQLException {

    dataSource = new HikariDataSource();
    dataSource.setDataSource(new com.amazon.redshift.jdbc42.DataSource());
    dataSource.setJdbcUrl(Parameters.REDSHIFT_DB_URL);
    dataSource.setUsername(Parameters.REDSHIFT_DB_USERNAME);
    dataSource.setPassword(Parameters.REDSHIFT_DB_PASSWORD);
    dataSource.setLogWriter(new PrintWriter(System.out));
    dataSource.setMaximumPoolSize(poolSize);
}

public static synchronized Connection getConnection() {
    return dataSource.getConnection();
}

public static void close() {
    dataSource.close();
}
}

我已经在类路径中添加了 Redshift Driver 的 JAR！

现在的问题是当我打电话给RedshiftConnector.getConnection() 时，我收到以下错误：

[com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Error creating Driver, Driver class name incorrect.] with root cause
 java.lang.ClassCastException: com.amazon.redshift.jdbc42.Driver cannot be cast to com.amazon.dsi.core.interfaces.IDriver
    at com.amazon.dsi.core.impl.DSIDriverFactory.createDriver(Unknown Source)
    at com.amazon.jdbc.common.AbstractDataSource.doInitialize(Unknown Source)
    at com.amazon.jdbc.common.AbstractDataSource.getSimbaConnection(Unknown Source)
    at com.amazon.jdbc.common.AbstractDataSource.getConnection(Unknown Source)
    at com.amazon.jdbc.common.AbstractDataSource.getConnection(Unknown Source)
    at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:316)
    at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:506)
    at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:118)
    at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:94)

谢谢

Answer 1

我找到了解决办法：

而不是使用 setDataSource()：

dataSource.setDataSource(new com.amazon.redshift.jdbc42.DataSource());

我们必须使用 setDriverClassName() 并与 AWS Redshift 完美配合：

dataSource.setDriverClassName("com.amazon.redshift.jdbc42.Driver");

谢谢