使用 c3p0 连接池 改造 jdbcutils工具类

c3p0 连接池 改造 jdbcutils工具类

package b.cn.itcast.utils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ResourceBundle;

import com.mchange.v2.c3p0.ComboPooledDataSource;

public class JdbcUtils {
	
	
	// 使用  c3p0 连接池 改造 jdbcutils工具类
	private static ComboPooledDataSource cpds = new ComboPooledDataSource();
	
	public static Connection getConnection(){
		
		try {
			return cpds.getConnection();
		} catch (SQLException e) {
			
			e.printStackTrace();
		}
		return null;
	}
	
	public static void release(ResultSet rs, Statement stmt, Connection conn){
		
		if(rs!=null){
			try {
				rs.close();
			} catch (SQLException e) {
			
				e.printStackTrace();
			}
			rs = null;
		}
		
		if(stmt!=null){
			try {
				stmt.close();
			} catch (SQLException e) {
				
				e.printStackTrace();
			}
			stmt = null;
		}
		
		if(conn!=null){
			try {
				conn.close();
			} catch (SQLException e) {
				
				e.printStackTrace();
			}
			conn = null;
		}
	}
}