标签：print font res result nts rate trace query lex
/**
* 数据库工具类,封装数据库操作中多次使用的数据库操作代码
* @author Administrator
*
*/
public class DBUtils {
public static Connection getConnection() {
Connection connection = null;
try {
Class.forName("com.mysql.jdbc.Driver");
String databaseName = "jdbc_test";
String url = "jdbc:mysql://localhost:3306/" + databaseName;
String user = "root";
String password = "111";
connection = 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 connection;
}
}
*Connection connection = DBUtils.getConnection();
*PreparedStatement preparedStatement = connection.prepareStatement(sql);
*ResultSet resultSet = preparedStatement.executeQuery();
以上三个流都需要进行关闭 也都可以用try - with - resource 进行关闭 (自动关闭 不需要手动)
标签：print font res result nts rate trace query lex
原文地址：http://www.cnblogs.com/niuxiao12---/p/7418896.html
