神马文学网使用ModelDriven action
来源：百度文库 编辑：神马文学网 时间：2024/10/02 18:43:08
Model-Driven vs. Field-Driven
two types of Actions possible:
1. Model-driven
Action has methods returning your model classes (myAction.getUser())
Fields in the view are fields of your model
Views refer directly to your model (property=‘user.name’)
Excellent because it allows model reuse
2. Field-driven
Action has fields of its own, which are fields in the view
execute() collates fields and interacts with the model
Views refer to action fields (property=‘daysTillNextBirthday’)
Useful where form is not parallel to model
As we can see in our Action, the two can be mixed
ModelDriven Interface
XWork / WebWork also supports modeldriven Actions more directly
The ModelDriven Interface has one method:
public Object getModel()
Properties of the model will be directly available, i.e. “name” instead of “user.name”
Applies to UI tags, form field names, etc.
步骤：
（1）Action implements ModelDriven接口
（2）实现getModel()方法：
public Object getModel() {
return user;
}
（3）将jsp页面上user.name 改成name
（4）在xwork.xml中，
extends="webwork-default"
/model/form.jsp
/model/success.jsp
/model/form.jsp
two types of Actions possible:
1. Model-driven
Action has methods returning your model classes (myAction.getUser())
Fields in the view are fields of your model
Views refer directly to your model (property=‘user.name’)
Excellent because it allows model reuse
2. Field-driven
Action has fields of its own, which are fields in the view
execute() collates fields and interacts with the model
Views refer to action fields (property=‘daysTillNextBirthday’)
Useful where form is not parallel to model
As we can see in our Action, the two can be mixed
ModelDriven Interface
XWork / WebWork also supports modeldriven Actions more directly
The ModelDriven Interface has one method:
public Object getModel()
Properties of the model will be directly available, i.e. “name” instead of “user.name”
Applies to UI tags, form field names, etc.
步骤：
（1）Action implements ModelDriven接口
（2）实现getModel()方法：
public Object getModel() {
return user;
}
（3）将jsp页面上user.name 改成name
（4）在xwork.xml中，
使用ModelDriven action
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