ShardingSphere-JDBC 提供了 JDBC 驱动,可以仅通过配置变更即可使用,无需改写代码。
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
Class.forName("org.apache.shardingsphere.driver.ShardingSphereDriver"); // 或者使用标准 SPI 注册数据库驱动
String jdbcUrl = "jdbc:shardingsphere:classpath:config.yaml";
String sql = "SELECT i.* FROM t_order o JOIN t_order_item i ON o.order_id=i.order_id WHERE o.user_id=? AND o.order_id=?";
try (
Connection conn = DriverManager.getConnection(jdbcUrl);
PreparedStatement ps = conn.prepareStatement(sql)) {
ps.setInt(1, 10);
ps.setInt(2, 1000);
try (ResultSet rs = preparedStatement.executeQuery()) {
while(rs.next()) {
// ...
}
}
}
String driverClassName = "org.apache.shardingsphere.driver.ShardingSphereDriver";
String jdbcUrl = "jdbc:shardingsphere:classpath:config.yaml";
// 以 HikariCP 为例
HikariDataSource dataSource = new HikariDataSource();
dataSource.setDriverClassName(driverClassName);
dataSource.setJdbcUrl(jdbcUrl);
String sql = "SELECT i.* FROM t_order o JOIN t_order_item i ON o.order_id=i.order_id WHERE o.user_id=? AND o.order_id=?";
try (
Connection conn = dataSource.getConnection();
PreparedStatement ps = conn.prepareStatement(sql)) {
ps.setInt(1, 10);
ps.setInt(2, 1000);
try (ResultSet rs = preparedStatement.executeQuery()) {
while(rs.next()) {
// ...
}
}
}
org.apache.shardingsphere.driver.ShardingSphereDriver
jdbc:shardingsphere:
为前缀xxx.yaml
,配置文件格式与 YAML 配置一致classpath:
前缀表示从类路径中加载配置文件