JDBC流操做-父類統一操做

public class BaseDao {
/** 鏈接 */
protected Connection con;
/** SQL語句對象 */
protected PreparedStatement ps;
/** 結果集合對象 */
protected ResultSet rs;

/**
* 創建鏈接
*/
public void setConnection() {

try {
Class.forName("com.mysql.jdbc.Driver");
con = DriverManager.getConnection("jdbc:mysql://localhost:3306/myweb（數據庫名字）?characterEncoding=utf-8", "root",
"123456");
} catch (Exception e) {
e.printStackTrace();
}

}

/**
* 關閉鏈接
*/
public void closeConnection() {

try {
if (rs != null) {
rs.close();
}
if (ps != null) {
ps.close();
}
if (con != null) {
con.close();
}
} catch (Exception e) {
e.printStackTrace();
}

}
}