使用 Java API
引入 Maven 依赖
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用 ZooKeeper 时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-cluster-mode-repository-zookeeper-curator</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
<!-- 使用 Etcd 时,需要引入此模块 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-cluster-mode-repository-etcd</artifactId>
<version>${shardingsphere.version}</version>
</dependency>
规则配置
以下示例将 ZooKeeper 作为配置中心和注册中心。
// 省略配置数据源以及规则
// ...
// 配置 ClusterPersistRepositoryConfig
ClusterPersistRepositoryConfiguration registryCenterConfig = new ClusterPersistRepositoryConfiguration("Zookeeper", "governance-sharding-data-source", "localhost:2181", new Properties());
// 配置 Cluster Config
ModeConfiguration modeConfig = new ModeConfiguration("Cluster", registryCenterConfig, true);
// 创建 ShardingSphereDataSource
DataSource dataSource = ShardingSphereDataSourceFactory.createDataSource(modeConfig);
使用 ShardingSphereDataSource
通过 ShardingSphereDataSourceFactory 工厂创建的 ShardingSphereDataSource 实现自 JDBC 的标准接口 DataSource。 可通过 DataSource 选择使用原生 JDBC,或JPA, MyBatis 等 ORM 框架。
以原生 JDBC 使用方式为例:
DataSource dataSource = ShardingSphereDataSourceFactory.createDataSource(modeConfig);
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()) {
// ...
}
}
}
当前内容版权归 ShardingSphere 或其关联方所有,如需对内容或内容相关联开源项目进行关注与资助,请访问 ShardingSphere .