struts(struts.xml.jet) - Add action to struts

Introduce

Add action to struts

Related knowledge:

Task

• Configure
• Merge

Tag

• entity
• set
• get
• merge
  • insert
  • update

Task And Model

• Model Group: shop
• Model: book

The model group of the current task is shop, 
which contain a Java entity model book, 
and the relation value of book is one;

More about the model structure of this demo, please click: Demo model structure 

There are 2 ways to select the model:

• Select Model Group(Such as shop): <entity> tag need select the relation. This way is used in template, which require multiple models, such as many-to-one, many-to-many.

• Select Model(Such as book)(This demo): <entity> tag no need to select the relation. This way is used in template, which require only one model. Of course, you can also select relation together.

• Template: struts.xml.jet

• Name: struts-config

• Ext: The extension is xml

Note： this is a merge task.

Before merger

In merged file the annotation symbols which id is equal to action, is the insert position.

We use the insert tag to insert the merged content at the same id position, you only need to write the merged content in the template.

Class and class can be used to a part of class name

• Entity tag set the new variable object to get the selected model.
• Set the variable Class as the head uppercase part, get it by object.property("Class").
• Set the variable class as the lowercase part, get it by object.property("class").
• Use insert tag, id is equal to action.

Result: Add action to struts config file.