Gradle javaCompile.doLast not working

I come across an error, in my gradle file "javaCompile.doLast" doesn't work, this is my gradle file

import org.aspectj.bridge.IMessage
import org.aspectj.bridge.MessageHandler
import org.aspectj.tools.ajc.Main

apply plugin: 'com.android.application'

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'org.aspectj:aspectjtools:1.8.5'
    }
}

android {
    compileSdkVersion 21
    buildToolsVersion '21.1.2'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 21
    }

    buildTypes {
        release {
            minifyEnabled true
            proguardFiles 'proguard.cfg'
        }
    }

    lintOptions {
        checkReleaseBuilds true
        abortOnError true
    }
}

final def log = project.logger
final def variants = project.android.applicationVariants

variants.all { variant ->
    println "AAAAAAAA";

    JavaCompile javaCompile = variant.javaCompile
    javaCompile.doLast {
        println "CCCC"
        String[] args = ["-showWeaveInfo",
                         "-1.5",
                         "-inpath", javaCompile.destinationDir.toString(),
                         "-aspectpath", javaCompile.classpath.asPath,
                         "-d", javaCompile.destinationDir.toString(),
                         "-classpath", javaCompile.classpath.asPath,
                         "-bootclasspath",  project.android.bootClasspath.join(File.pathSeparator)]
        log.debug "ajc args: " + Arrays.toString(args)
        println "BBBBBBB";

        println javaCompile.destinationDir.toString()
        println javaCompile.classpath.asPath

        MessageHandler handler = new MessageHandler(true);
        new Main().run(args, handler);
        for (IMessage message : handler.getMessages(null, true)) {
            switch (message.getKind()) {
                case IMessage.ABORT:
                case IMessage.ERROR:
                case IMessage.FAIL:
                    log.error message.message, message.thrown
                    break;
                case IMessage.WARNING:
                    log.warn message.message, message.thrown
                    break;
                case IMessage.INFO:
                    log.info message.message, message.thrown
                    break;
                case IMessage.DEBUG:
                    log.debug message.message, message.thrown
                    break;
            }
        }
    }
}

repositories {
    mavenCentral()
}

      

        
        
        
      

    

When I run gradle info, I see "AAA" print twice, but "BBB" and "CCC" are not printed, I don't know what happened in the gradle file I am copying "options" from https://github.com/android10/ Android-AOPExample

============= update =======================

Sorry, this is my fault, If I run "gradle clean build" in the command line, it works and works fine when I press the start button in Intellij,

but if i didn't run the command it doesn't work if i press the run button in Intellij,

So, a new question. Differences between "command line" and "Intellij launch button"