C3P0数据库连接池的配置

在pom.xml文件中导入jar包

  com.mchange
  c3p0
  0.9.5.2

 在src目录下创建c3p0-config.xml文件

    
        
        com.mysql.cj.jdbc.Driver
        jdbc:mysql://192.168.153.143:3306/jdbcstudb
        root
        941006

        
        
        5
        
        10
        
        10
        
        600
        
        50
        
        2

    

 测试

public class C3p0Util {
    private static DataSource dataSource = null;

    static {
        dataSource = new ComboPooledDataSource("mysqlapp");
    }

    public static Connection getConnection() {
        try {

            return dataSource.getConnection();

        } catch (SQLException e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) {
        Connection connection = getConnection();
        System.out.println(connection);
    }

输出下面语句表示成功！其中红色的不是报错，而是日志