jdbc 连接Oracle informix Mysql

package com.basicSql;
 
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
 
/**
 * jdbc 链接Database执行 executeQuery()
 *
 * @author xrhou
 *
 */
public class TestJdbc {
 
    public static void main(String[] args) {
         dbconnMysql();
        //dbconnInformix();
    }
 
    /**
     * 链接Informix 数据库
     */
    public static void dbconnInformix(){
        try {
            // 1 注册驱动，加载驱动，使用反射
            Class.forName("com.informix.jdbc.IfxDriver").newInstance();
            // 2 编写数据库连接字符串
            String url="jdbc:informix-sqli://192.168.2.166:9088/bhrs:informixserver=online;NEWLOACLE=en_us,zh_cn,zh_tw;NEWCODESET=GB2312-80,8859-1,819,Big5 dbvisual";
            String user="informix";
            String password="informix";
            Connection conn=DriverManager.getConnection(url, user, password);
            //3 设置连接状态
            Statement stmt=conn.createStatement();
            //4 执行查询语句
            String sql="select * from dgwbw ;";
            ResultSet rs=stmt.executeQuery(sql);
            while(rs.next()){
                String deptid=rs.getString("entryid");
                String hm=rs.getString("hm");
                System.out.println(deptid+","+hm);
            }
 
            //5 关闭资源连接
            rs.close();
            stmt.close();
            conn.close();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } catch (InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
    }

　　　　/**

　　　* 链接Mysql数据库
     */
    public static void dbconnMysql() {
        Connection conn =null;
        Statement stmt=null;
        ResultSet rs=null;
 
        try {
            // 1 注册驱动，加载驱动，使用反射
            Class.forName("com.mysql.jdbc.Driver");
            // new com.mysql.jdbc.Driver(); //相当与使用new 关键字 创建的一个实例
            String url = "jdbc:mysql://127.0.0.1:3306/test";
            String dbuser = "root";
            String dbpwd = "root";
            conn = DriverManager.getConnection(url, dbuser, dbpwd);
            stmt = conn.createStatement();
 
            String sql = "select id,name from person";
            rs = stmt.executeQuery(sql);
            {
                while (rs.next()) {
                    String id = rs.getString("id");
                    String name = rs.getString("name");
                    System.out.println(id + "," + name);
                }
            }
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex2) {
            ex2.printStackTrace();
        }finally{
            //5 关闭资源连接
            try {
                rs.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            try {
                stmt.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

/**
     * 链接Oracle数据库
     */
    public static void dbconnOracle() {
        try {
            // 1 注册驱动，加载驱动，使用反射
            Class.forName("oracle.jdbc.driver.OracleDriver");
            // new com.mysql.jdbc.Driver(); //相当与使用new 关键字 创建的一个实例
            String url = "jdbc:oracle:thin:@127.0.0.1:1521:mydatabase";
            String dbuser = "root";
            String dbpwd = "root";
            Connection conn = DriverManager.getConnection(url, dbuser, dbpwd);
            Statement stmt = conn.createStatement();
 
            String sql = "select id,name from person";
            ResultSet rs = stmt.executeQuery(sql);
            {
                while (rs.next()) {
                    String id = rs.getString("id");
                    String name = rs.getString("name");
                    System.out.println(id + "," + name);
                }
            }
            // 5 关闭资源
            rs.close();
            stmt.close();
            conn.close();
 
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (SQLException ex2) {
            ex2.printStackTrace();
        }
    }
 
}