How to Solve Implementation BeanPostProcessor does not override postProcessBeforeInitialization and postProcessAfterInitialization in Java Spring Bean

Posted on

Introduction

This article is showing how to solve some problem The problem actually exist upon implementing a BeanPostProcessor interface. The process for implementing a BeanPostProcessor interface actually exist in another article. It is an article with the title of ‘How to Use BeanPostProcessor in Java Spring Bean Application’ in this link. Actually, upon implementing the BeanPostProcessor interface in a Java class file, there is something that is not working. Actually, there is a class with the name of ‘EmployeeBeanPostProcessor just for an example. Using NetBeans IDE, this class is implementing the ‘BeanPostProcessor’ interface. NetBeans IDE is triggering the error message to require the process for importing the BeanPostProcessor interface. But upon importing it, normally it will also trigger another error message to implement all the abstract method of the interface. But it is weird that there are no such things like that. The process for compiling and running the Java Spring Application is also a success.

So, how can the postProcessBeforeInitialization method and the postProcessAfterInitialization method is possible for further usage ?. The following is the situation and the condition of the environment triggering it. The process is using NetBeans IDE with the version of 8.2. Moreover, the Java version for compiling, building and running the program is Java with the version of 1.8.0_231 as follows :

Microsoft Windows [Version 10.0.19042.1165]
(c) Microsoft Corporation. All rights reserved.

C:\Users\Personal>java -version
java version "1.8.0_231"
Java(TM) SE Runtime Environment (build 1.8.0_231-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.231-b11, mixed mode)

C:\Users\Personal>

Solution for Implementing BeanPostProcessor abstract method

This is actually very simple. The solution is just implement the method manually. As in the previous article before just type it manually. This article is also using the same base application in the other article. That other article is an article with the title of ‘How to Create a Simple Java Spring Application using NetBeans IDE’ in this link. So, the following is the original Java class file with the name of ‘EmployeeBeanPostProcessor’ implementing the BeanPostProcessor interface :

package com.test.spring;

import org.springframework.beans.factory.config.BeanPostProcessor;

public class EmployeeBeanPostProcessor implements BeanPostProcessor {
     
}

Just edit manually, the Java class file above, precisely by adding the postProcessBeforeInitialization and postProcessAfterInitialization method as exist below :

package com.test.spring;

import org.springframework.beans.factory.config.BeanPostProcessor;

public class EmployeeBeanPostProcessor implements BeanPostProcessor {
     @Override
     public Object postProcessBeforeInitialization(Object args, String status){
        System.out.println("Before executing the init method of the "+args+" object");
        return args;
     }

     @Override
     public Object postProcessAfterInitialization(Object args, String status){
        System.out.println("After executing the init method of the "+args+" object");
        return args;
     }
}

Leave a Reply