通过JDBC访问SQLHUB

  简介

SQLHUB提供了两种JDBC驱动程序：

本地驱动

DRIVER：com.hg.jdbc.HgLocDriver:

URL：dbc:hg:loc: {数据库名}，例如：jdbc:hg:loc:hg

网络驱动

DRIVER： com.hg.jdbc.HgDriver

URL：jdbc:hg:net:@{服务器}:{端口}:{数据库名}，例如：jdbc:hg:net:@localhost:1980:hg

驱动Java程序包：hg.jar（可以在系统lib目录下找到）

例子

try {             //注册本地驱动             Class.forName("com.hg.jdbc.HgLocDriver");             //获取本地连接             Connection conn = DriverManager.getConnection("jdbc:hg:loc:hg", "hg", "hg");             /*             //注册网络驱动             Class.forName("com.hg.jdbc.HgDriver");             //获取网络连接 Connection conn = DriverManager.getConnection( "jdbc:hg:net:@localhost:1980:hg", "hg", "hg");             */             Statement stmt = conn.createStatement();             String sql;             //执行修改，如：INSERT、UPDATE、DELETE等             sql = "insert into 部门 (编号, 名称) values (50, '测试')";             System.out.println("SQL:" + sql);             int n = stmt.executeUpdate(sql);             System.out.println("影响了" + n + "条记录");             //执行查询             sql = "select * from 部门";             System.out.println("SQL:" + sql);             ResultSet rst = stmt.executeQuery(sql);             //输出查询结果字段             ResultSetMetaData rsmd = rst.getMetaData();             n = rsmd.getColumnCount();             for (int i = 1; i <= n; i++) {                 if (i > 1) {                     System.out.print(",");                 }                 System.out.print(rsmd.getColumnName(i));             }             System.out.println("/n---------------------------");             //输出查询结果记录             while (rst.next()) {                 for (int i = 1; i <= n; i++) {                     if (i > 1) {                         System.out.print(",");                     }                     System.out.print(rst.getString(i));                 }                 System.out.print("/n");             }             rst.close();             //执行SQL             sql = "delete from 部门 where 编号='50'";             //sql = "select * from 部门";             stmt.execute(sql);             System.out.println("SQL:" + sql);             if (stmt.getResultSet() != null) {                 //结果为记录集合                 rst = stmt.getResultSet();                 //输出查询结果字段                 rsmd = rst.getMetaData();                 n = rsmd.getColumnCount();                 for (int i = 1; i <= n; i++) {                     if (i > 1) {                         System.out.print(",");                     }                     System.out.print(rsmd.getColumnName(i));                 }                 System.out.println("/n---------------------------");                 //输出查询结果记录                 while (rst.next()) {                     for (int i = 1; i <= n; i++) {                         if (i > 1) {                             System.out.print(",");                         }                         System.out.print(rst.getString(i));                     }                     System.out.print("/n");                 }                 rst.close();             } else {                 //输出影响记录数量                 n = stmt.getUpdateCount();                 System.out.println("影响了" + n + "条记录");             }             stmt.close();             conn.close();         } catch (Exception e) {             e.printStackTrace();         }