JDBC连接MYSQL

Posted on 2007-12-07 21:23 yukui 阅读(380) 评论(0)  编辑  收藏 所属分类: 技术
Step1:可在http://www.mysql.com/products/connector-j/index.html下载MySQL JDBC驱动程序mysql-connector-java-*.jar,并加入到ClassPath下面.

Step2:注册JDBC驱动程序

try {
Class.forName("com.mysql.jdbc.Driver");
}
catch(ClassNotFoundException e) {
System.out.println("找不到驱动程序");
}

Step3:提供JDBC URL

jdbc:mysql://主机名:端口号/数据库名?user=***&password=***&useUnicode=true&characterEncoding=UTF8

端口号:MySQL的默认值是3306

useUnicode,characterEncoding:如果要存取中文,则必须使用,表明是否使用Unicode,并指定编码方式.

Step4:从DriverManager取得Connection

可以直接将JDBC URL传入DriverManager.getConnection()得到Connection对象,如:

try {
String url = "jdbc:mysql://localhost:3306/GUESTBOOK?user=caterpillar&password=123456";
Connection conn = DriverManager.getConnection(url);
if(!conn.isClosed())
System.out.println("数据库连接成功!");

conn.close();
}
catch(SQLException e) {
....
}

也可以将userName和password传入DriverManager.getConnection()得到Connection对象,如:

String url = "jdbc:mysql://localhost:3306/AddressBook";
String user = "ZhuJun";
String password = "123456";
Connection conn = DriverManager.getConnection(url, user, password);


一个完整的例子:

import java.sql.*;

public class DBTest {
public static void main(String[] args) {
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:3306/AddressBook";
String user = "ZhuJun";
String password = "123456";
try {
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, user, password);

if(!conn.isClosed())
System.out.println("数据库连接成功!");
conn.close();
}
catch(ClassNotFoundException e) {
System.out.println("找不到驱动程序");
e.printStackTrace();
}
catch(SQLException e) {
e.printStackTrace();
}
}
}

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