AspectJ + Gradle configuration

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执念已碎
执念已碎 2021-02-04 11:31

I\'d like to use AspectJ in Gradle project (it\'s not an Android project - just a simple Java app).

Here is how my build.gradle looks like:

apply plugin         


        
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  • 2021-02-04 12:21

    Just want to add the so called "official" plugin for AspectJ mentioned by Archie.

    Here's some gradle script example on how to do it:

    apply plugin: 'java'
    
    
    
    sourceCompatibility = '1.8'
    [compileJava, compileTestJava]*.options*.encoding = 'UTF-8'
    
    if (!hasProperty('mainClass')) {
        ext.mainClass = 'com.aspectz.Main'
    }
    buildscript {
      repositories {
        maven {
          url "https://plugins.gradle.org/m2/"
        }
      }
      dependencies {
        classpath "gradle.plugin.aspectj:gradle-aspectj:0.1.6"
        //classpath "gradle.plugin.aspectj:plugin:0.1.1"
        //classpath "gradle.plugin.aspectj:gradle-aspectj:0.1.1"
      }
    }
    
    
    ext {
        aspectjVersion = '1.8.5'
    }
    
    apply plugin: "aspectj.gradle"
    
    
    repositories {
        mavenCentral()
    }
    
    dependencies {
    
        testCompile group: 'junit', name: 'junit', version: '4.10'
        compile("log4j:log4j:1.2.16")
        compile("org.slf4j:slf4j-api:1.7.21")
        compile("org.slf4j:slf4j-log4j12:1.7.21")
        compile("org.aspectj:aspectjrt:1.8.5")
        compile("org.aspectj:aspectjweaver:1.8.5")
    
    
    }
    

    However, it seems that it only supports Java 8 and above. As when you use java 7 to build it, it got error :

    java.lang.UnsupportedClassVersionError: aspectj/AspectJGradlePlugin : Unsupported major.minor version 52.0
    
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  • 2021-02-04 12:26

    Looks like there is a new "official" gradle plugin for AspectJ:

    https://plugins.gradle.org/plugin/aspectj.gradle

    Unfortunately the documentation is minimal. I haven't tried it myself.

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  • 2021-02-04 12:28

    Adding this in my build.gradle file worked for me.

    project.ext {
      aspectjVersion = '1.8.12'
    }
    
    apply plugin: "aspectj.gradle"
    
    buildscript {
      repositories {
        maven {
          url "https://plugins.gradle.org/m2/"
        }
      }
      dependencies {
        classpath "gradle.plugin.aspectj:gradle-aspectj:0.1.6"
      }
    }
    

    Doing a gradle assemble injected the code defined in the aspect.

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  • 2021-02-04 12:29

    This plugin worked for me (gradle 5.6):

    plugins {
        id 'java'
        id "io.freefair.aspectj.post-compile-weaving" version "4.1.4"
    }
    
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  • 2021-02-04 12:30

    A bit ugly, but short and does not require additional plugins or configurations. Works for me:

    Add aspectjweaver dependency ti Gradle build script. Then in the task you need it find the path to its jar and pass as javaagent in jvmArgs:

    dependencies {
        compile "org.aspectj:aspectjweaver:1.9.2"
    }
    
    test {
        group 'verification'
    
        doFirst {
            def weaver = configurations.compile.find { it.name.contains("aspectjweaver") }
            jvmArgs = jvmArgs << "-javaagent:$weaver"
        }
    }
    

    Add aop.xmlfile to the resources\META-INF\ folder with the specified Aspect class:

    <aspectj>
        <aspects>
            <aspect name="utils.listener.StepListener"/>
        </aspects>
    </aspectj>
    

    Example of an aspect:

    package utils.listener
    
    import org.aspectj.lang.JoinPoint
    import org.aspectj.lang.annotation.*
    import org.aspectj.lang.reflect.MethodSignature
    
    @Aspect
    @SuppressWarnings("unused")
    public class StepListener {
    
        /* === Pointcut bodies. Should be empty === */
        @Pointcut("execution(* *(..))")
        public void anyMethod() {
        }
    
        @Pointcut("@annotation(org.testng.annotations.BeforeSuite)")
        public void withBeforeSuiteAnnotation() {
        }
    }
    
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  • 2021-02-04 12:35

    I have been struggled with this for a while, so this the config I use and works well.

    In your configuration do this.

    configurations {
        ajc
        aspects
        aspectCompile
        compile{
            extendsFrom aspects
        }
    }
    

    In your dependencies use the following configuration. Spring dependencies are not needed if you are not using spring fwk.

    dependencies {
    
        //Dependencies required for aspect compilation
        ajc "org.aspectj:aspectjtools:$aspectjVersion"
        aspects "org.springframework:spring-aspects:$springVersion"
        aspectCompile  "org.springframework:spring-tx:$springVersion"
        aspectCompile  "org.springframework:spring-orm:$springVersion"
        aspectCompile  "org.hibernate.javax.persistence:hibernate-jpa-2.1-api:$hibernateJpaVersion"
    
    }
    
    compileJava {
        sourceCompatibility="1.7"
        targetCompatibility="1.7"
        //The following two lines are useful if you have queryDSL if not ignore
        dependsOn generateQueryDSL
        source generateQueryDSL.destinationDir
    
        dependsOn configurations.ajc.getTaskDependencyFromProjectDependency(true, "compileJava")
    
        doLast{
            ant.taskdef( resource:"org/aspectj/tools/ant/taskdefs/aspectjTaskdefs.properties", classpath: configurations.ajc.asPath)
            ant.iajc(source:"1.7", target:"1.7", destDir:sourceSets.main.output.classesDir.absolutePath, maxmem:"512m", fork:"true",
                    aspectPath:configurations.aspects.asPath,
                    sourceRootCopyFilter:"**/.svn/*,**/*.java",classpath:configurations.compile.asPath){
                sourceroots{
                    sourceSets.main.java.srcDirs.each{
                        pathelement(location:it.absolutePath)
                    }
                }
            }
        }
    }
    

    I dont use the plugin I use the ant and aspectj compiler to do that, probably there will be an easy way

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