c3p0 c3p0.properties

JdbcUtil

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

import com.mchange.v2.c3p0.ComboPooledDataSource;

public class JdbcUtil {
    static String url;
    static String user;
    static String pwd;
    static ComboPooledDataSource cpds;
    static {
        cpds = new ComboPooledDataSource();
    }
    /** 获取连接 **/
    public static Connection getConn() throws SQLException {
        return cpds.getConnection();
        // Connection connection = DriverManager.getConnection(url, user, pwd);
    }
}

c3p0.properties

c3p0.driverClass = com.mysql.jdbc.Driver
c3p0.jdbcUrl = jdbc:mysql://localhost:3306/webexam
c3p0.user = root
c3p0.password =
c3p0.maxPoolSize = 20
c3p0.minPoolSize = 3
c3p0.maxStatements = 30
c3p0.maxIdleTime = 150