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();
}
}

}