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>
JDBC鏈接數據庫