JDBC连接数据库
1、把jar包添加到库：DmJdbcDriver18.jar（在安装目录/drivers/jdbc下）因为我使用的jdk版本是11，所以用DmJdbcDriver18，它支持1.8及以上版本的jdk。
创建表并进行增删改查操作
package DM; import java.sql.*; /** * @author：Hyunfeng * @date：2021/1/4 */ public class ConnectDM8 { static String jdbcString = "dm.jdbc.driver.DmDriver"; static String urlString = "jdbc:dm://localhost:5236"; // 定义连接用户名 static String userName = "SYSDBA"; // 定义连接用户口令 static String password = "SYSDBA"; // 定义连接对象 static Connection conn = null; public static void findAll() { try { Class.forName(jdbcString); conn = DriverManager.getConnection(urlString, userName, password); Statement stmt = conn.createStatement(); ResultSet resultSet = stmt.executeQuery("select * from DMHR.JOB"); while(resultSet.next()) { System.out.print("JOB_ID:" + resultSet.getInt(1)); System.out.print(" JOB_TITLE:" + resultSet.getString(2)); System.out.print(" MIN_SALARY:" + resultSet.getInt(3)); System.out.println(" MAX_SALARY:" + resultSet.getInt(4)); } resultSet.close(); stmt.close(); conn.close(); } catch(Exception e) { e.printStackTrace(); } } public static void createTble() { try { Class.forName(jdbcString); conn = DriverManager.getConnection(urlString, userName, password); Statement stmt = conn.createStatement(); // int i = stmt.executeUpdate("create table users(uid int,uname varchar(10));"); boolean flag = stmt.execute("create table users(uid int,uname varchar(10));"); if(flag) System.out.println("建表成功"); else System.out.println("建表失败"); System.out.println(flag); stmt.close(); conn.close(); } catch(Exception e) { e.printStackTrace(); } } public static void insert() { try { Class.forName(jdbcString); conn = DriverManager.getConnection(urlString, userName, password); Statement stmt = conn.createStatement(); int i = stmt.executeUpdate("insert into users values(1,'messi') "); if(i != 0) System.out.println("插入成功"); else System.out.println("插入失败"); stmt.close(); conn.close(); } catch(Exception e) { e.printStackTrace(); } } public static void delete() { try { Class.forName(jdbcString); conn = DriverManager.getConnection(urlString, userName, password); Statement stmt = conn.createStatement(); int i = stmt.executeUpdate("delete users where uid=1"); if(i != 0) System.out.println("删除成功"); else System.out.println("删除失败"); stmt.close(); conn.close(); } catch(Exception e) { e.printStackTrace(); } } public static void main(String[] args) { // createTble(); // insert(); // delete(); findAll(); } }
ODBC配置
Linux 环境中配置ODBC（以root 配置）
1、检查gcc 包
[root@localhost ~]# rpm -aq|grep gcc
没有的话就安装： yum install gcc -y
2、安装unixODBC-2.3.9
1)解压：tar -xvf unixODBC-2.3.9.tar.gz
cd unixODBC-2.3.0
2）./configure
3）make &&. make install
3、编辑配置文件odbc.ini、odbcinst.ini
vi /usr/local/etc/odbc.ini
[dm8] Description = DM ODBC DSN Driver = DM8 ODBC DRIVER SERVER = localhost UID = SYSDBA PWD = SYSDBA TCP_PORT = 5236
vi /usr/local/etc/odbcinst.ini
[DM8 ODBC DRIVER]
Description = DM ODBC DSN
DRIVER = /home/dmdba/dmdbms/bin/libdodbc.so
4、切换到dmdba用户登录
su - dmdba
isql dm8
windows
