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我試圖用Aspectj做AOP，但我不知道爲什麼不執行我的方面，它只是運行主類。這是我第一次這樣做，所以我可能會做錯事。AspectJ的建議不會在Maven多模塊設置中觸發
這是我的代碼：
的看點：
@Aspect
public class YourAspect {
@Pointcut("@annotation(yourAnnotationVariableName)")
public void annotationPointCutDefinition(YourAnnotation yourAnnotationVariableName){
}
@Pointcut("execution(* *(..))")
public void atExecution(){}
@Around("annotationPointCutDefinition(yourAnnotationVariableName) && atExecution()")
public Object aroundAdvice(ProceedingJoinPoint joinPoint, YourAnnotation yourAnnotationVariableName) throws Throwable {
if(yourAnnotationVariableName.isRun()) {
Object returnObject = null;
try {
System.out.println("aspects.YourAspect's aroundAdvice's body is now executed Before yourMethodAround is called.");
returnObject = joinPoint.proceed();
} catch (Throwable throwable) {
throw throwable;
} finally {
System.out.println("aspects.YourAspect's aroundAdvice's body is now executed After yourMethodAround is called.");
}
return returnObject;
}
return joinPoint.proceed();
}
@After("annotationPointCutDefinition(yourAnnotationVariableName) && atExecution()")
public void printNewLine(JoinPoint pointcut, YourAnnotation yourAnnotationVariableName){
System.out.print("End\n\r");
}
}
註釋：
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface YourAnnotation {
public boolean isRun() default true;
}
主類：
public class MainClass{
public static void main(String[] args) {
MainClass yourClass = new MainClass();
yourClass.yourMethodAround();
}
@YourAnnotation
public void yourMethodAround(){
System.out.println("Executing TestTarget.yourMethodAround()");
}
}
我有兩個工作模塊和POMs廁所KS這樣的：
Aspect的POM：
<?xml version="1.0" encoding="UTF-8"?>
<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>Group</groupId>
<artifactId>Aspects</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.10</version>
</dependency>
</dependencies>
</project>
主要POM：
<?xml version="1.0" encoding="UTF-8"?>
<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>Group</groupId>
<artifactId>Main</artifactId>
<version>1.0-SNAPSHOT</version>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.7</version>
<configuration>
<complianceLevel>1.8</complianceLevel>
<source>1.8</source>
<target>1.8</target>
<aspectLibraries>
<aspectLibrary>
<groupId>Group</groupId>
<artifactId>Aspects</artifactId>
</aspectLibrary>
</aspectLibraries>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.5.5</version>
<configuration>
<appendAssemblyId>false</appendAssemblyId>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>aspects.MainClass</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>a-make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>aspects.MainClass</mainClass>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>Group</groupId>
<artifactId>Aspects</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
我MVN全新安裝了這兩個項目，然後MVN高管：Java中的主要項目，它只是運行該方法，而不是方面。誰能幫我？
謝謝！
你是否真的在切入點中使用'yourAnnotationVariableName'？它應該有註釋類型作爲它的參數https://blog.jayway.com/2015/09/08/defining-pointcuts-by-annotations/ –
我跟着那個網頁。在我的切入點中使用yourAnnotationVariableName意味着什麼？你能解釋一下嗎？ – Motomine
有關Maven多模塊項目的一般問題和錯誤假設以及如何使用AspectJ Maven插件。例如，aspect模塊不會配置任何插件版本，也不會將主模塊用作父級模塊。即使它確實如此，它也意味着一個循環引用，因爲如果aspect模塊依賴於main和main將方面作爲依賴關係，那麼就無法編譯。我建議你創建一個共同的家長，然後創建一個具有正確配置的應用程序和一個方面模塊（我可以幫你解決這個問題）。 – kriegaex