c3p0链接postgres

1、准备两个库，导入lib中

mchange-commons 以及c3p0

2、编写测试代码

ComboPooledDataSource cpds = new ComboPooledDataSource();
try {
    cpds.setDriverClass( "org.postgresql.Driver" ); //loads the jdbc driver
} catch (PropertyVetoException e) {
    e.printStackTrace();
}
cpds.setJdbcUrl( "jdbc:postgresql://127.0.0.1:5432/postgres" );
cpds.setUser("postgres");
cpds.setPassword("123456");
Connection connection= null;

try {
    connection = cpds.getConnection();
    System.out.println("1231231");
    System.out.println("链接信息"+connection);
} catch (SQLException e) {
    e.printStackTrace();
}

3、测试结果