实现自动刷新页面 本例实现页面自动刷新的效果，该页面的内容如图5-4所示，在该页面中将根据数据库中存储的最新数据信息更新页面中热卖商品的信息，但是对这些信息的修改并不会导致整个页面的刷新。 实际的Web应用中，诸如：天气预报、直播比赛以及股市行情等页面往往都需要定期进行自动刷新。 传统的Web实现方式中，要想实现类似的效果必须进行整个页面的刷新，在网络速度受到一定限制的情况下，这种因为一个局部变动而牵动整个页面的处理方式显得有些得不偿失。

ajax_8
......\ajax_8
......\......\dwr
......\......\...\adam.js
......\......\...\engine.js
......\......\...\util.js
......\index.html
......\index.html.bak
......\js
......\..\test.js
......\..\test.js.bak
......\..\text.js.bak
......\WEB-INF
......\.......\classes
......\.......\.......\run.bat
......\.......\.......\run.bat.bak
......\.......\.......\User.java
......\.......\.......\User.java.bak
......\.......\.......\UserModel.java
......\.......\.......\UserModel.java.bak
......\.......\dwr.xml
......\.......\dwr.xml.bak
......\.......\lib
......\.......\...\dwr.jar
......\.......\...\firstajax.rar
......\.......\...\json.jar
......\.......\web.xml
......\技术.txt

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