Linux下加载JDBC驱动连接OceanBase

来源：互联网发布：ubuntu查看配置编辑：程序博客网时间：2024/05/18 01:03

1. 安装jdbc驱动

vi ~/.bashrc

添加如下内容：

export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib:/home/xiaochu.yh/tools/mysql-connector-java-5.1.6/mysql-connector-java-5.1.6-bin.jar

OceanBase使用JDBC 5.1.6版本。

2. 使用jdbc驱动

vi MySQLConnection.java ，输入下面的代码；然后javac MySQLConnection.java 编译；最后java MySQLConnection运行即可

import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class MySQLConnection {  public static void main(String[] args) {    Connection conn = null;    Statement stmt = null;    ResultSet rs = null;    String url = null;    String user = null;    String password = null;    String sql = null;    try {      Class.forName("com.mysql.jdbc.Driver"); //加载mysq驱动    } catch (ClassNotFoundException e) {      System.out.println("驱动加载错误");      e.printStackTrace();//打印出错详细信息    }    try {      url = "jdbc:mysql://10.10.10.7:4797/test?user=admin&password=admin&useUnicode=true&&characterEncoding=gb2312&autoReconnect = true";      user = "admin";      password = "admin";      conn = DriverManager.getConnection(url,user,password);    } catch (SQLException e) {      System.out.println("数据库连接错误");      e.printStackTrace();    }    try {      stmt = conn.createStatement();      sql = "select * from dept"; //dept这张表有deptno，deptname和age这三个字段      rs = stmt.executeQuery(sql);//执行sql语句      while(rs.next()) {        System.out.print(rs.getInt("deptno") + "   ");        System.out.print(rs.getString("deptname") + "   ");        System.out.println(rs.getInt("age") + "   ");      }    } catch (SQLException e) {      System.out.println("数据操作错误");      e.printStackTrace();    }    //关闭数据库    try {      if(rs != null) {        rs.close();        rs = null;      }      if(stmt != null) {        stmt.close();        stmt = null;      }      if(conn != null) {        conn.close();        conn = null;      }    } catch(Exception e) {      System.out.println("数据库关闭错误");      e.printStackTrace();    }  }}