Home Database Mysql Tutorial JSP由浅入深(12)―― 表单编辑_MySQL

JSP由浅入深(12)―― 表单编辑_MySQL

Jun 01, 2016 pm 02:08 PM
input type Can us logo edit

  比如来自Blazix服务器的标志库在你的系统环境中不能使用,那么不使用标志库来实现相似的功能呢?本教程就是为这个问题而提出的。这个问题是可以解决的,只是代码要长一点。主要地,你必须亲自编辑HTML标志,然后将它设置缺省值。从下面的例子的例子中我们可以学到怎样修改GetName.jsp以提供类似于blx:getProperty的特性,但是我们只能手工地编辑HTML标志:









What's your name?
SIZE=20 VALUE="">


What's your e-mail address?
NAME=email SIZE=20

VALUE="">


What's your age?
SIZE=4 VALUE=>









如上面的代码所示,它只简单地在INPUT标志上增加一个“VALUE”区域,并且用一个表达是初始化这个区域。

为了处理在输入过程中的异常错误,我们可以在bean中使用“String”区域并且将它转换为目标数据类型就可实现。所以这样也可以处理异常错误。

作为课后练习,我们可以将前面教程中的例子改成不用Blazix标志库。


至此,本“JSP由浅入深”系列教程到此全部结束,希望对你有帮助。

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