c3p0 的数据库工具

如下

package com.wty.util;

import com.mchange.v2.c3p0.ComboPooledDataSource;

import java.sql.Connection;
import java.sql.SQLException;

public class DBUtil {
    private static ComboPooledDataSource dataSource=new ComboPooledDataSource();

    public static ComboPooledDataSource getDataSource() {
        return dataSource;
    }
    public static Connection getConnection() throws SQLException {
        Connection conn=dataSource.getConnection();
        return conn;
    }

    public static void close(Connection conn){
        try {
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }finally {
            conn=null;
        }
    }
}