最近在学习数据库开发的一些实例，这里浅谈一下用JDBC连接数据库MySQL（当然也可以连接SQL Sever或Oracle了，只是我更喜欢开源软件，同时也更简单）。
首先正确安装好MySQL，建立好数据库studentinfo
mysql>create database studentinfo;
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然后编写java代码，ConnectToMySQL.java
import java.sql.*;
public class ConnectToMySQL {
public static Connection getConnection() throws SQLException ,
java.lang.ClassNotFoundException{
String url = "jdbc:mysql://localhost:3306/studentinfo";
Class.forName("com.mysql.jdbc.Driver");
String userName = "root";
String password = "";
Connection con = DriverManager.getConnection(url,userName,password);
return con;
}
public static void main(String[] args) {
try{
Connection con = getConnection();
Statement sql = con.createStatement();
sql.execute("drop table if exists student");
sql.execute("create table student(id int not null auto_increment,name varchar(20) not
null default 'name',math int not null default 60,primary key(id));");
sql.execute("insert student values(1,'AAA','99')");
sql.execute("insert student values(2,'BBB','77')");
sql.execute("insert student values(3,'CCC','65')");
String query = "select * from student";
ResultSet result = sql.executeQuery(query);
System.out.println("Student表数据如下：");
System.out.println("---------------------------------");
System.out.println("学号"+" "+"姓名"+" "+"数学成绩");
System.out.println("---------------------------------");
int number;
String name;
String math;
while(result.next()){
number = result.getInt("id");
name = result.getString("name");
math = result.getString("math");
System.out.println(number + " " + name + " " + math);
}
sql.close();
con.close();
}catch(java.lang.ClassNotFoundException e){
System.err.println("ClassNotFoundException:" + e.getMessage());
}catch(SQLException ex){
System.err.println("SQLException:" + ex.getMessage());
}
}
}
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轻松搞定，一下为输出结果：
要注意的是使用MySQL数据库，需要用到对应的JDBC驱动程序mysql-connector-java-5.0.3，可以到zySQL的官方网站上下载(http://www.mysql.org)
