JDBC连接MySQL数据库的经典语句

首先在在MySQL数据库中创建数据库和表，比如执行如下脚本：

DROP TABLE IF EXISTS `person`;
CREATE TABLE `person` (
  `id` int(2) NOT NULL auto_increment,
  `name` char(4) default NULL,
  `gender` char(2) default NULL,
  `birth` date default NULL,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=utf8;

 创建了个person表。。。。。。

 

下面是JDBC的工具类：

package com.jdbc.model;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public final class JdbcUtil {
	private static String url ="jdbc:mysql://localhost:3306/mysqltest?&useUnicode=true&characterEncoding=UTF-8";
	private static String user = "root";
	private static String password = "123456";
	
	private JdbcUtil(){}
	
	//注册驱动
	static {
		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (ClassNotFoundException e) {
			//抛出异常，提示出错
			throw new ExceptionInInitializerError();
		}
	}
	//建立连接
	public static Connection getConnection() throws SQLException{
		return DriverManager.getConnection(url,user,password);
	}
	//释放资源
	public static void free(Connection conn,Statement stmt,ResultSet rs){
		try{
			if(rs!=null)
				rs.close();
		} catch(SQLException e){
			e.printStackTrace();
		}finally{
			try{
				if(stmt!=null)
					stmt.close();
				}catch(SQLException e){
					e.printStackTrace();
				}finally{
					if(conn!=null)
						try {
							conn.close();
						} catch (SQLException e) {
							e.printStackTrace();
						}
				}
		}
		
	}

}

 

 

JDBC的测试类：

package com.jdbc.model;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCModel {

	/**
	 * @param args
	 * @throws SQLException 
	 */
	public static void main(String[] args) throws SQLException {
		temple();
	}
	
	static void temple() throws SQLException{
		Connection conn = null;
		Statement stmt = null;
		ResultSet rs = null;
		
		try {
			//利用工具类注册驱动，建立与mysql的连接
			conn = JdbcUtil.getConnection();
			//创建连接语句
			stmt = conn.createStatement();
			
			String insertsql = "insert into person(name,gender,birth) values('老朱','男','1986-1-1')";
			String querysql = "select * from person";
			//执行插入语句
			stmt.executeUpdate(insertsql);
			//执行查询语句
			rs = stmt.executeQuery(querysql);
			//处理结果
			while(rs.next()){
				System.out.println("-----------------------------------");
				System.out.println("记录"+rs.getString("id")+
									"\t姓名："+rs.getString("name")+"\n"+
									"\t性别："+rs.getString("gender")+"\n"+
									"\t出生年月："+rs.getString("birth"));
				
			}
		} catch (SQLException e) {
			e.printStackTrace();
		}finally{
			//释放资源
			JdbcUtil.free(conn, stmt, rs);
		}
	}

}

 

 

哦了。。。。。。。。。。。

评论

2 楼 ILoveDOUZHOU 2013-01-13  

1 楼 wangjinshan1314 2011-07-11