文档首页/
MapReduce服务 MRS/
开发指南(LTS版)/
HetuEngine开发指南(普通模式)/
开发HetuEngine应用/
HetuEngine样例程序(Java)/
通过HSFabric的用户名密码认证实现查询HetuEngine SQL任务
更新时间:2024-08-03 GMT+08:00
通过HSFabric的用户名密码认证实现查询HetuEngine SQL任务
功能简介
通过HSFabric方式连接到HetuServer,组装对应的SQL发送到HetuServer执行,完成对Hive数据源的增删改查操作。
public class JDBCExampleFabric { private static Properties properties = new Properties(); private static void init() throws ClassNotFoundException { properties.setProperty("user", "YourUserName"); properties.setProperty("SSL", "false"); Class.forName("io.XXX.jdbc.XXXDriver"); } /** * Program entry * * @param args no need program parameter */ public static void main(String[] args) { Connection connection = null; ResultSet result = null; PreparedStatement statement = null; String url = "jdbc:XXX://192.168.1.130:29903,192.168.1.131:29903/hive/default?serviceDiscoveryMode=hsfabric"; try { init(); String sql = "show tables"; connection = DriverManager.getConnection(url, properties); statement = connection.prepareStatement(sql.trim()); result = statement.executeQuery(); ResultSetMetaData resultMetaData = result.getMetaData(); Integer colNum = resultMetaData.getColumnCount(); for (int j = 1; j <= colNum; j++) { System.out.print(resultMetaData.getColumnLabel(j) + "\t"); } System.out.println(); while (result.next()) { for (int j = 1; j <= colNum; j++) { System.out.print(result.getString(j) + "\t"); } System.out.println(); } } catch (SQLException | ClassNotFoundException e) { e.printStackTrace(); } finally { if (result != null) { try { result.close(); } catch (SQLException e) { e.printStackTrace(); } } if (statement != null) { try { statement.close(); } catch (SQLException e) { e.printStackTrace(); } } if (connection != null) { try { connection.close(); } catch (SQLException e) { e.printStackTrace(); } } } } }
上述代码中各参数说明如表1所示:
父主题: HetuEngine样例程序(Java)