可以将获得连接对象和关闭资源打包…

package jdbc.util;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

public class JDBCUtils {

private static final String URL =
"jdbc:mysql://localhost:3306/school";

private static final String USER = "root";

private static final String PASSWORD =
"root";

public static Connection getConnection() {

Connection conn = null;

Statement stmt = null;

ResultSet rs = null;

try {

Class.forName("com.mysql.jdbc.Driver");

conn =
DriverManager.getConnection(URL, USER, PASSWORD);

} catch (ClassNotFoundException
e) {

// TODO
Auto-generated catch block

e.printStackTrace();

} catch (SQLException e)
{

// TODO
Auto-generated catch block

e.printStackTrace();

}

return conn;

}

public static void closeResource(Connection conn,
Statement stmt,

ResultSet rs)
{

if (rs != null) {

try {

rs.close();

} catch
(SQLException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

rs =
null;

}

if (stmt != null) {

try {

stmt.close();

} catch
(SQLException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

stmt =
null;

}

if (conn != null) {

try {

conn.close();

} catch
(SQLException e) {

//
TODO Auto-generated catch block

e.printStackTrace();

}

conn =
null;

}

}

}