带有Maven的AspectJ(仍)不起作用 [英] AspectJ with Maven (still) not working
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问题描述
我正在尝试在Eclipse Neon中使用aspectj创建一个示例maven项目.但是，方面无法进行编织/工作(请参见下面的输出).我尝试研究了许多原因和解决方案，但没有一个起作用(请参阅下面的相关问题).任何帮助/见解将不胜感激.谢谢！
I am trying to create a sample maven project with aspectj in Eclipse Neon. However, aspects are not weaving/working (see output below). I tried looking into lots of causes and solutions but none worked (see related questions below). Any help/insights would be very much appreciated. Thanks!
使用的技术:
- Java
jdk-1.8 - Eclipse(Java EE)Neon 3
- Apache Maven 3.5.0
-
junit-4.5(通过maven包含) -
aspectjrt-1.8.9(通过maven包含)
- Java
jdk-1.8 - Eclipse (Java EE) Neon 3
- Apache Maven 3.5.0
junit-4.5(included through maven)aspectjrt-1.8.9(included through maven)
(我还在一个单独的项目的Eclipse安装中安装了AJDT插件-不确定这是否抑制了aspectj的maven存储库版本)
(I also installed the AJDT plugin to my Eclipse installation for a separate project -- not sure if this inhibits the maven repository version of aspectj)
目录:
$ tree .
.
├── pom.xml
└── src
├── main
| └── java
| └── com
| └── hellomaven
| └── quickstart
| ├── App.java
| └── AppAspect.java
└── test
└── java
└── com
└── hellomaven
└── quickstart
└── AppTest.java
App.java
package com.hellomaven.quickstart;
public class App {
public static void main(String[] args) {
System.out.println("Hello World!");
say("billy", "Nice to meet you");
Dog d = new Dog();
d.bark(2);
}
public static void say(String name, String word) {
System.out.println(name.toUpperCase() + " says " + word.toLowerCase() + "!");
}
}
class Dog {
Dog() {
System.out.println("..Dog init code..");
}
public void bark(int n) {
for (int i = 0; i < n; i++) {
System.out.print("bark ");
}
System.out.println("!");
}
}
AppAspect.java
package com.hellomaven.quickstart;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
@Aspect
public class AppAspect {
@Before("execution(public static * *(..))")
public void testAspectBefore() {
System.out.println("Before Okay");
}
@Pointcut("execution(* *(..))")
public void testAspectPointcut() {
System.out.println("Pointcut Okay");
}
@After("execution(* *(..))")
public void testAspectAfter() {
System.out.println("After Okay");
}
@Around("execution(* *(..))")
public void testAspectAround() {
System.out.println("Around Okay");
}
}
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.hellomaven</groupId>
<artifactId>quickstart</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>quickstart</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
<aspectj.version>1.8.9</aspectj.version>
<junit.version>4.5</junit.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.0</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
<!-- IMPORTANT -->
<useIncrementalCompilation>false</useIncrementalCompilation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.9</version>
<configuration>
<showWeaveInfo>true</showWeaveInfo>
<source>${java.version}</source>
<target>${java.version}</target>
<Xlint>ignore</Xlint>
<complianceLevel>${java.version}</complianceLevel>
<encoding>UTF-8</encoding>
<verbose>true</verbose>
</configuration>
<executions>
<execution>
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.3</version>
<configuration>
<mainClass>com.hellomaven.quickstart</mainClass>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</project>
输出
<!-- language: lang-none -->
Hello World!
BILLY says nice to meet you!
..Dog init code..
bark bark !
我尝试过并失败的相关问题:
- Maven项目中的AspectJ无法正常工作/编织 >
- 无法将AspectJ与Maven集成
- 如何使用Maven构建AspectJ项目
- Maven + AspectJ-配置它的所有步骤
- Maven:编译包含Java 1.6源代码的AspectJ项目
- AspectJ in Maven project not working/weaving
- Not able to integrate AspectJ with Maven
- How to build AspectJ project using Maven
- Maven + AspectJ - All steps to configure it
- Maven: compile AspectJ project containing Java 1.6 source
推荐答案
我不确定为什么，但是在包含aspectjweaver-1.8.9依赖项，更新为junit-4.12并更改方面代码之后，代码可以正常工作.
这是更新的方面代码(AppAspect.java):
I am not sure why but after including an aspectjweaver-1.8.9 dependency, updating to junit-4.12 and changing the aspect code, the code works fine.
Here is the updated aspect code (AppAspect.java):
package com.hellomaven.quickstart;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
@Aspect
public class AppAspect {
@Pointcut("execution(* *(..))")
public void defineEntryPoint() {
}
@Before("defineEntryPoint()")
public void aaa(JoinPoint joinPoint) {
System.out.println("aspect before");
}
@After("defineEntryPoint()")
public void bbb(JoinPoint joinPoint) {
System.out.println("aspect after");
}
}
这是新的dependencies:
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
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