MyEclipse与Mysql数据库的连接

1.载入MySql驱动程序

Class.forName("com.mysql.jdbc.Driver");    // 载入MySql驱动程序

2.建立Connection连接对象

con=DriverManager.getConnection("jdbc:mysql://localhost:3306/my_db?user=root&password=root");

当中

url = "jdbc:mysql://localhost/";

serverName = "localhost";

portNumber = "3306";

databaseName = "my_db";

userName = "root";

password = "root";

3.建立Statement语句对象

Statement st = con.createment();

4.运行sql语句

st.executeUpdate(“SQL语句”);//插入

st.executeUpdate(“SQL语句”);//更新

st.executeexecuteQuery(“SQL语句”);//查询

5.关闭连接

con.close();

6.实现案例

DBConn.java中是对连接数据库的实现

package db;import java.sql.Connection;
import java.sql.DriverManager;public class DBConn {/* 获取Conncetion对象并返回 */public Connection getConnection() {Connection con=null;        try {
        Class.forName("com.mysql.jdbc.Driver");    // 载入MySql驱动程序
        //con = DriverManager.getConnection("jdbc:mysql://localhost/cloud_db?user=root&password=root&autoReconnect=true&useUnicode=true&characterEncoding=utf8");
            con=DriverManager.getConnection("jdbc:mysql://localhost:3306/my_db?user=root&password=root&useUnicode=true&characterEncoding=GBK");
            //jdbc:mysql://localhost/数据库名称?useUnicode=true&characterEncoding=GBK        } catch (Exception e) {
        System.out.println("数据库获取失败！");
        e.printStackTrace();        }        return con;}
}

StudentImpl.java是对数据库数据的录入

package impl;
import pojo.Student;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import db.DBConn;
public class StudentImpl {
public String joinString(String[] slikes) {
String joinlikes = "";
for (String temp : slikes) {
joinlikes += temp + "-";
}
return joinlikes.substring(0, joinlikes.length() - 1);
}public void saveStudent(Student student){
//连接数据库完毕数据的录入操作
Connection con = null;
PreparedStatement pre = null;
DBConn conns = new DBConn();
con = conns.getConnection();
try{
pre = con.prepareStatement("insert into student (sname,spass,Slikes) values(?,?,?)");
pre.setString(1,student.getSname());
pre.setString(2,student.getSpass());
pre.setString(3,student.getSlikes());
boolean b = pre.execute();
}catch(SQLException e){
e.printStackTrace();
}finally{
try {
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
}}
}