Spring - Spring Data REST - Prevent The Methods in Event Handlers Be Triggered Twice

<span style="background-color: rgb(255, 255, 255);">To prevent the methods be triggered twice, we need to overwrite the </span><strong style="background-color: rgb(255, 255, 255);">publishEvent(ApplicationEvent event)</strong><span style="background-color: rgb(255, 255, 255);"> method, then remove the code below</span>

<span style="white-space:pre">	</span>this.getApplicationEventMulticaster().multicastEvent(event);
        if(this.parent != null) {
            this.parent.publishEvent(event);
        }
So, it need to create a customized AnnotationConfuigWebApplicationContext:
package com.siemens.ct.its.iam.deploy.configuration;

import org.springframework.context.ApplicationEvent;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.util.Assert;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

/**
 * Created by z002x71p on 2015/9/23.
 */
public class MyAnnotationConfigWebApplicationContext extends AnnotationConfigWebApplicationContext {

    public void publishEvent(ApplicationEvent event) {
        Assert.notNull(event, "Event must not be null");
        if(this.logger.isTraceEnabled()) {
            this.logger.trace("Publishing event in " + this.getDisplayName() + ": " + event);
        }

        this.getApplicationEventMulticaster().multicastEvent(event);
    }

    ApplicationEventMulticaster getApplicationEventMulticaster() throws IllegalStateException {
        for(Class<?> clazz = this.getClass() ; clazz != Object.class ; clazz = clazz.getSuperclass()) {
            String className = clazz.getName();
            System.out.println(className);
            if(className.equals("org.springframework.context.support.AbstractApplicationContext")){
                try {
                    Method method = clazz.getDeclaredMethod("getApplicationEventMulticaster") ;
                    method.setAccessible(true);
                    return (ApplicationEventMulticaster) method.invoke(this);
                }catch (NoSuchMethodException | InvocationTargetException | IllegalAccessException e){
                    throw new RuntimeException(e);
                }
            }
        }
        return null;
    }
}
And set it into the DispacherServlet.