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Java编程中的重构:以MVC模式的应用为例

  • 2026-04-16 15:47:19
Java编程中的重构:以MVC模式的应用为例

[图片]优秀的软件除了能满足用户的功能和性能需求以外，还能满足可扩展性及可重用性等需求。软件的设计和实现往往难以一次到位，而是需要一个不断优化设计、迭代开发的过程，这个迭代过程体现了软件重构的基本思路。下面展示对一个图形界面程序进行重构的过程。该图形界面程序用于求取整数的平方值，...

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  3. 缓存信息 : 0 reads,0 writes
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  1. CONNECT:[ UseTime:0.000442s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000716s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000315s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001496s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000542s ]
  6. SELECT * FROM `set` [ RunTime:0.010850s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000785s ]
  8. SELECT * FROM `article` WHERE `id` = 485345 LIMIT 1 [ RunTime:0.000413s ]
  9. UPDATE `article` SET `lasttime` = 1776394398 WHERE `id` = 485345 [ RunTime:0.004061s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000608s ]
  11. SELECT * FROM `article` WHERE `id` < 485345 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000876s ]
  12. SELECT * FROM `article` WHERE `id` > 485345 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002633s ]
  13. SELECT * FROM `article` WHERE `id` < 485345 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002609s ]
  14. SELECT * FROM `article` WHERE `id` < 485345 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000583s ]
  15. SELECT * FROM `article` WHERE `id` < 485345 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000845s ]
0.100652s