JDBC鏈接數據庫

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 JDBCUtils {

private static DataSource dataSource = null;

static{

dataSource = new ComboPooledDataSource("mvcApp");

}

public static Connection getConnection() throws Exception

{

return dataSource.getConnection();

}

public static void releaseDB(ResultSet resultSet,Statement statement,Connection connection)

{

if(resultSet != null)

{

try {

resultSet.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

if(statement != null)

{

try {

statement.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

if(connection != null)

{

try {

connection.close();

} catch (SQLException e) {

e.printStackTrace();

}

}

}

}

c3p0文檔

<?xml version="1.0" encoding="UTF-8"?>

<c3p0-config>  

  <named-config name="mvcApp"> 

    <property name="driverClass">com.mysql.jdbc.Driver</property>

    <property name="jdbcUrl">jdbc:mysql://localhost:3306/test</property>

<property name="user">root</property>

<property name="password">1111</property>

  </named-config>

</c3p0-config>