Java连接MySQL 和 MSSQL数据库写法

一、连接MySQl数据库

使用Eclipse时,可能找不到MySQL驱动包，只需要将包导入工程即可：在eclipse中只要右击工程文件夹属性选项-Java Build Path-Add Extenal
Archives 添加即可……

import java.sql.*;
public class TestSQL {
public static void main(String[] args) {
String username = "admin";
String password = "admin";
Connection conn = null;
Statement st = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/mis","root","root");
st = conn.createStatement();
String SQL = "select * from mis_users where username='" + username + "'and password = '" + password + "'";
rs = st.executeQuery("select * from mis_users");
while(rs.next()){
System.out.println("------------------");
System.out.println(rs.getString(1));
System.out.println(rs.getString(2));
System.out.println(rs.getString(3));
System.out.println(rs.getString(4));
System.out.println(rs.getString(5));
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally{
try{
if(rs!=null){
rs.close();
}
if(st!=null){
st.close();
}
if(conn!=null){
conn.close();
}
}catch(Exception e){
e.printStackTrace();
}
}
}
}

结果：

------------------
1
admin
admin
1035235541@qq.com
1
------------------
3
hpuych
hpuych
15239132969@163.com
2