Spring AOP get method parameter value based on parameter name

Question

Is it possible to get the method parameter value based on parameter name in Spring AOP.

MethodSignature signature = (MethodSignature) proceedingJoinPoint.getSignature();

Method method = signature.getMethod();

method.getParameters().getName() 
// possible to get the paramater names 

This approach will get parameter names, not value.

proceedingJoinPoint.getArgs()

will return values not names

Then is it possible to get the value based on a parameter name?

Answer 1

As I searched everywhere does not exist a function that gives parameter value by name and I wrote a simple method that makes this work.

public Object getParameterByName(ProceedingJoinPoint proceedingJoinPoint, String parameterName) {
    MethodSignature methodSig = (MethodSignature) proceedingJoinPoint.getSignature();
    Object[] args = proceedingJoinPoint.getArgs();
    String[] parametersName = methodSig.getParameterNames();

    int idx = Arrays.asList(parametersName).indexOf(parameterName);

    if(args.length > idx) { // parameter exist
        return args[idx];
    } // otherwise your parameter does not exist by given name
    return null;

}