Home Database Mysql Tutorial java-mysql中getConnection();得到的Connection 怪怪的。

java-mysql中getConnection();得到的Connection 怪怪的。

Jun 06, 2016 am 09:39 AM

mysqljava

图片说明
这个是返回我的Connection连接对象。
图片说明
我若直接在public static Connection getConnection() 所在类。main方法,以及
在public void add(User user) {所在类 main方法直接调用test(),,每次运行老是给我返回com.mysql.jdbc.JDBC4Connection@446cdf90同一个对象。。
而若间接着好多个类调用先调用new LoginFrame();——》new UserDAOJDBCImpl().test();则给我随机的些Connection对象。。好难理解哦哦。。

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