J2EE学习笔记(1) --JDBC

前言

工欲善其事，必先利其器。J2EE的学习中，我选择了对J2EE具有良好支持的myeclipse作为IDE。
由于博主安装myeclipse中支持的tomcat最高只有tomcat7.x，故选用了tomcat7作为服务器

工具

mysql官方驱动

建立数据库

这里我建了一个简单的学生数据库作为示例 Stu  Stu (StuNum,StuName)

import java.sql.DriverManager;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class Insert1 {

/**
* @param args
* @throws ClassNotFoundException
* @throws SQLException
*/
public static void main(String[] args) throws ClassNotFoundException, SQLException {
// TODO Auto-generated method stub
Class.forName("com.mysql.jdbc.Driver");
Connection conn=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/Stu?useUnicode=true&characterEncoding=utf8", "root", "");

//insert

Statement stat=(Statement) conn.createStatement();
String sql="insert into Stu(StuNum,StuName) values('123','哈哈')";
int i=stat.executeUpdate(sql);
System.out.println(i);
stat.close();
conn.close();

}
}

import java.sql.DriverManager;
import java.sql.SQLException;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;

public class Delete {

/**
* @param args
* @throws ClassNotFoundException
* @throws SQLException
*/
public static void main(String[] args) throws ClassNotFoundException, SQLException {
// TODO Auto-generated method stub
Class.forName("com.mysql.jdbc.Driver");
Connection conn=(Connection) DriverManager.getConnection("jdbc:mysql://localhost:3306/Stu?useUnicode=true&characterEncoding=utf8", "root", "");
Statement stat=(Statement) conn.createStatement();
String sql="delete from stu where StuNum=123";
int i=stat.executeUpdate(sql);
System.out.println(i);
stat.close();
conn.close();

}

}