JSP application JavaBean

Today I wrote a module to dynamically manage the drop-down menu function.
The JavaBean technology is used when adding implementations.
It was used in the past, but there was no problem with it. Today it is not easy to use.
Later, I carefully sorted it out from the beginning and found that a problem was ignored,
Record it, and record the points worth attention to avoid further attacks:
1. On the JSP page for adding features, the name of the parameter must be passed with the database,
Or the field names in the bean you write are the same. Otherwise, the parameter cannot be passed. For example:
<Input type = "text" name =" Dynamic_name ">
Dunamin_name is a field defined in bean.
2. When processing the Java page for adding functions, Bean must be
Set parameters. Example
<JSP: usebean id = "B" Class = "business. menucharge. Base. Name" Scope = "page">
<JSP: setproperty name = "B" property = "*"> </jsp: setproperty>
</Jsp: usebean>
These two are discovered today, and will be added later