Atitit. & #160; Class & #160; & #160; Metadata reflection operation & #160; api & #160; apache & #160; & #160; tool, atitit. apache

Atitit. Class metadata reflection operation api apache tool, atitit. apache

Atitit. Class metadata reflection operation api apache Tool

 

 

1 BeanUtils & PropertyUtils & prop MethodUtils class usage-shorts party ConstructorUtils1

2 New instance ConstructorUtils. invokeConstructor1

3 call method MethodUtils2

4. Reference 3

 

 

 

1 BeanUtils & PropertyUtils & prop MethodUtils class usage-shorts party ConstructorUtils

Author: old wow's paw Attilax iron, EMAIL: 1466519819@qq.com

Reprinted please indicate Source: http://www.cnblogs.com/attilax/

 

 

2 New instance ConstructorUtils. invokeConstructor

 

Private String exe (HttpServletRequest req ){

String meth = req. getParameter ("method ");

Handler hd = (Handler) mp. get (meth );

If (hd! = Null ){

Try {

Return (String) hd. handleReq (req );

} Catch (Exception e ){

// TODO Auto-generated catch block

E. printStackTrace ();

Return e. getMessage ();

}

}

If (hd = null ){

String classname = refx. getClassName (meth );

String meth_name = refx. getMethodName (meth );

Object o;

Try {

O = ConstructorUtils. invokeConstructor (

Class. forName (classname), null );

 

MethodUtils. invokeMethod (o, meth_name, null );

} Catch (Exception e ){

Return core. toJsonStrO88 (e );

}

}

Return meth;

}

3 Call method MethodUtils

 

1. // Use the invokeMethod method of MethodUtils to execute the method in the specified entity (without parameters)

2. System. out. println (MethodUtils. invokeMethod (entity, "haha", null ));

3.

4. // Use the invokeMethod method of MethodUtils to execute the method in the specified entity (1 parameter)

5. MethodUtils. invokeMethod (entity, "sayHelle", "Dream Fan Ying ");

6.

7. // Use the invokeMethod method of MethodUtils to execute the method in the specified entity (multiple parameters)

8. Object [] params = new Object [] {new Integer (10), new Integer (12 )};

9. String msg = (String) MethodUtils. invokeMethod (entity, "countAges", params );

10. System. out. println (msg );

 

 

4 Reference

 

BeanUtils & PropertyUtils & MethodUtils class usage-shorts party-iteyetech website .html

Apache Commons BeanUtils package Learning (3)-ConstructorUtils. invokeConstructor, MethodUtils. invokeMethod-andevil's column-blog channel-CSDN.NET.html

Summary of atitit. java attribute Assignment Methods and BeanUtils 1.6.1. copyProperty bug-attilax column-blog channel-CSDN.NET.html

Attilax. java annotation and best practices (3) O7-attilax column-blog channel-CSDN.NET.html