Use Javassist to get a list of class method parameter names

In the actual work, sometimes need to dynamically obtain a class of method parameter name, the general reflection mechanism is not available, need to use the bytecode tool to get.

Package com.yanek.soa.test;

Import Java.lang.reflect.Modifier; Import Javassist.
Classpool; Import Javassist.
Ctclass; Import Javassist.
Ctmethod;
Import Javassist.bytecode.CodeAttribute;
Import Javassist.bytecode.LocalVariableAttribute;

Import Javassist.bytecode.MethodInfo;  public class Methodvariablenameutil {/** * @param args */public static void main (string[] args) {string[]
		Names=getmethodvariablename ("Com.yanek.soa.test.Test", "test2");
		for (String name:names) {System.out.println (name); /** * Gets the parameter variable name of the method * @param classname * @param methodname * @return/public static string[] Getmetho  
	         Dvariablename (String classname,string methodname) {try{Classpool pool = Classpool.getdefault ();  
	         Ctclass cc = pool.get (classname);
	         Ctmethod cm = Cc.getdeclaredmethod (methodname);
             MethodInfo MethodInfo = Cm.getmethodinfo ();
             CodeAttribute CodeAttribute = Methodinfo.getcodeattribute (); String[] Paramnames = new String[cm.getparametertypes (). length];  
             Localvariableattribute attr = (localvariableattribute) codeattribute.getattribute (Localvariableattribute.tag);  
                 if (attr!= null) {int pos = modifier.isstatic (Cm.getmodifiers ())? 0:1; 
                 for (int i = 0; i < paramnames.length i++) {Paramnames[i] = Attr.variablename (i + POS);
             return paramnames;
		 }}catch (Exception e) {System.out.println ("Getmethodvariablename fail" +e);
	return null;
 }

	

}

Package com.yanek.soa.test;

public class Test {

	/**
	 * @param args
	 *
	/public static void main (string[] args)
	

	{
	
	
    }  String Test (String a,string b,user User) {return
        "Hello";
    }
    
    public static string Test2 (String a,string b,user User) {return
        "Hello";
    }

    public static string Test3 (String p1,string p2,user User) {return
        "Hello";
    }
    
    
}

Execution can get to the list of methods. Related maven dependencies:

		<dependency>
			<groupId>javassist</groupId>
			<artifactid>javassist</ artifactid>
			<version>3.12.1.GA</version>
		</dependency>