标签:数据 ack connect pool pre java except 资源 port
package util; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import javax.sql.DataSource; import com.mchange.v2.c3p0.ComboPooledDataSource; public class DataSourceUtils { private static ComboPooledDataSource ds=new ComboPooledDataSource(); /** * 获取数据源 * @return 连接池 */ public static DataSource getDataSource(){ return ds ; } /** * 释放资源 * @param conn * @param st * @param rs */ public static void CloseResource(Connection conn,Statement st , ResultSet rs){ closeResultSet(rs); closeStaement(st); closeConn(conn); } /** * 获取连接 * @return 连接 * @throws SQLException */ public static Connection getConnection() throws SQLException{ return ds.getConnection(); } /** *释放连接 * @param conn * 连接 */ public static void closeConn(Connection conn){ if(conn!=null){ try { conn.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ conn = null ; } } } /** * 释放语句执行者 * @param st * 语句执行者 */ public static void closeStaement(Statement st){ if(st!=null){ try { st.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ st = null ; } } } /** * 释放结果集 * @param rs * 结果集 */ public static void closeResultSet(ResultSet rs){ if(rs!=null){ try { rs.close(); } catch (SQLException e) { e.printStackTrace(); }finally{ rs = null ; } } } }
标签:数据 ack connect pool pre java except 资源 port
原文地址:http://www.cnblogs.com/NEWHOM/p/6679272.html