Several formats of struts2 receiving Parameters

After several months of development in other languages, I forgot about it. I found a blog and sorted it out,1st and 2 most commonly used

 

1. Use Action attributes:
Define the parameters to be received in the action and provide the corresponding setter and getter. They are the same as the names of the submitted parameters and are not used for data type conversion.
You can use get and post for the corresponding submission methods, such as testaction? Name = Admin
For example:

 

View code

 1       Public   Class Testaction Extends  Actionsupport {  2           Private   Static   Final  Long Serialversionuid =-74641515109893325l ;  3           Private  String name;  4         5           Public   Void  Execeute (){  6 System. Out. println (name + ":" + Name );  7   }  8        9           Public  String getname (){  10               Return  Name;  11   }  12         13           Public   Void  Setname (string name ){  14               This . Name = Name; 15   }  16 }

 

2. Use domainmodel:
There are not many attributes in the action, but the model used in the model layer is used to save an object. You can use get and post for the corresponding submission method,
For example, testaction? Resbananrc. Name = Admin
For example:

View code

 1       Public   Class Testaction Extends  Actionsupport {  2           Private   Static  Final   Long Serialversionuid =-74641515109893325l ;  3           Private  Resbanrc;  4         5           Public  Resbanrc getresbanrc (){  6               Return  Resbananrc;  7   }  8        9           Public   Void  Setresbananrc (resbanrc ){  10               This . Resbananrc = Resbananrc;  11   }  12         13           Public   Void  Execeute (){  14 System. Out. println ("name:" +Resbananrc. getname ());  15   }  16 }

 

 

3. Use DTO -- Data Transmission object
It is used to receive parameters and PASS Parameters. It is not an object class in the project. For example, the user will use the confirmation password when registering, so you must first receive the Parameter
To create a user object. Parameters are submitted in the same domain model method.
Dto:

View code

 1   Public   Class  Userdto {  2       Private  String name; 3       Private  String password;  4       Private  String confirm;  5     6       Public  String getname (){  7           Return  Name;  8   }  9       Public  Void  Setname (string name ){  10           This . Name = Name;  11   }  12       Public  String GetPassword (){  13           Return  Password;  14   }  15      Public   Void  Setpassword (string password ){  16           This . Password = Password;  17   }  18       Public  String getconfirm (){  19           Return  Confirm;  20   } 21       Public   Void  Setconfirm (string confirm ){  22           This . Confirm = Confirm;  23   }  24 }

 

Action:

View code

 1       Public   Class TestactionExtends  Actionsupport {  2           Private   Static   Final   Long Serialversionuid =-74641515109893325l ;  3           Private  Userdto;  4         5           Public  Userdto getuserdto (){  6              Return  Userdto;  7   }  8           Public   Void  Setuserdto (userdto ){  9               This . Userdto = Userdto;  10   }  11           Public   Void Execeute (){  12 System. Out. println ("name:" + Userdto. getname ());  13   }  14 }

 

4. Use modeldriven:
When creating an action, the action implements the modeldriven interface, calls the GetModel () method of the interface, and obtains the relevant object.
You can use get and post for the corresponding submission methods, such as testaction? Name = Admin

View code

 1       Public   Class Testaction Extends Actionsupport Implements Modeldriven <resbananrc> {  2           Private   Static   Final   Long Serialversionuid =-74641515109893325l ;  3           Private Resbananrc resbanrc = New Resbananrc (); //  Here we need to manually add a new  4        5           Public  Resbananrc GetModel (){  6               Return  Resbananrc;  7   }  8           Public   Void  Execeute (){  9 System. Out. println ("name:" + Resbananrc. getname ());  10  }  11 }

 

 

5. Use the request object:
This method is the same as the traditional JSP and other transmission parameters, that is, the request. getparameter ("") method is used.

View code

 1   Public   Class Testaction Extends  Actionsupport {  2       Private   Static   Final   Long Serialversionuid =-74641515109893325l ;  3     4       Public   Void  Execeute (){  5 String name = Super . Getrequest (). getparameter ("paraname" );  6 System. Out. println ("name:" + Name );  7   }  8 }