1.載入MySql驅動程序

Class.forName("com.mysql.jdbc.Driver");????//?載入MySql驅動程序

2.建立Connection連接對象

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

當中

url?=?"jdbc:mysql://localhost/";

serverName?=?"localhost";

portNumber?=?"3306";

databaseName?=?"my_db";

userName?=?"root";

password?=?"root";

3.建立Statement語句對象

Statement?st?=?con.createment();

4.運行sql語句

st.executeUpdate(“SQL語句”);//插入

st.executeUpdate(“SQL語句”);//更新

st.executeexecuteQuery(“SQL語句”);//查詢

5.關閉連接

con.close();

6.實現案例

DBConn.java中是對連接數據庫的實現

package db;

import java.sql.Connection;

import java.sql.DriverManager;

public class DBConn {

/* 獲取Conncetion對象并返回 */

public Connection getConnection() {

Connection con=null;

try {

Class.forName("com.mysql.jdbc.Driver"); // 載入MySql驅動程序

//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/數據庫名稱?useUnicode=true&characterEncoding=GBK

} catch (Exception e) {

System.out.println("數據庫獲取失敗！

");

e.printStackTrace();

}

return con;

}

}

StudentImpl.java是對數據庫數據的錄入

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){

//連接數據庫完畢數據的錄入操作

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();

}

}

}

}

總結

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