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package helloSQL;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
//链接数据库
/**
* 原材料：
* 数据库的IP：127.0.0.1
* 数据库的端口号：3306
* 数据库名称：how2java
* 编码方式：UTE-8
* 账号 root
* 密码：admin
*/
public class HeroDAO implements DAO {
Connection c=null;
Statement s= null;
PreparedStatement ps;
public HeroDAO() {
//初始化驱动
try {
Class.forName("com.mysql.jdbc.Driver");
c = DriverManager.getConnection(
"jdbc:mysql://127.0.0.1:3306/how2java?characterEncoding=UTF-8",
"root", "admin");
s = c.createStatement(); //对数据库进行操作的对象
}catch(ClassNotFoundException e) {
e.printStackTrace();
}catch(SQLException e) {
e.printStackTrace();
}
}
@Override
public void add(Hero hero) throws SQLException {
String sql = "insert into hero values(null,?,?,?)";
ps = c.prepareStatement(sql);
ps.setString(1, hero.getName());
ps.setFloat(2, hero.getHp());
ps.setInt(3, hero.getDamage());
ps.execute();
}
@Override
public void delete(int id) throws SQLException {
String sql = "delete from hero where id="+id;
ps = c.prepareStatement(sql);
}
@Override
public void update(int id) {
// TODO Auto-generated method stub
}
@Override
public Hero get(int id) {
// TODO Auto-generated method stub
return null;
}
}