JDBC和ODBC配置

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

下载地址：http://www.unixodbc.org/unixODBC-2.3.9.tar.gz

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 = ODBC DRIVER FOR DM8
Driver = /home/dmdba/dmdbms/bin/libdodbc.so

4、切换到dmdba用户登录

su - dmdba

isql dm8

windows