Java + Spring + Maven アプリケーション。
アノテーション ベースのパブリック メソッドから内部呼び出しを行うことができません。
前提条件
- Java バージョン: 1.7。
- プロジェクト: AspectProject > Post build jar ファイルが作成されます。
- クライアント: AspectClient : "AspectProject" の依存関係があります。
アスペクトプロジェクト
- pom.xml
<properties>
<java.version>1.7</java.version>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<springframework.version>4.1.2.RELEASE</springframework.version>
<org.aspectj-version>1.7.0</org.aspectj-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- AspectJ dependencies -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/java</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<!-- compile for Java 1.7 -->
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.4</version>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
<configuration>
<complianceLevel>${maven.compiler.source}</complianceLevel>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
- アスペクトプロバイダー
@Aspect
public class AspectProvider {
/**
* This is the point cut for all get Method with @TestAnnotation annotation
*/
@Pointcut("execution(* get*()) && @annotation(aTestAnnotation)")
public void getMethodPointcut(TestAnnotation aTestAnnotation) {}
@Around("getMethodPointcut(aTestAnnotation)")
public Object getConfiguration(ProceedingJoinPoint iJoinPoint, TestAnnotation aTestAnnotation) throws Throwable {
return getValueFromISTCompositeConfiguration(iJoinPoint, aTestAnnotation);
}
private Object getValueFromISTCompositeConfiguration(final ProceedingJoinPoint iProceedingJoinPoint, TestAnnotation aTestAnnotation) throws Throwable {
Object aReturnValue = null;
if (aTestAnnotation.value() != null) {
System.out.println("ASPECT: Returning annotation value.");
aReturnValue = aTestAnnotation.value();
} else {
System.out.println("MISSING_GETTER_PROPERTY");
}
if(aReturnValue == null){
aReturnValue = iProceedingJoinPoint.proceed();
}
return aReturnValue;
}
}
- アノテーション「TestAnnotation」
@Component
@Target({ElementType.METHOD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface TestAnnotation {
String value();
}
アスペクトクライアント
- pom.xml
<properties>
<java.version>1.7</java.version>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<aspectProject.version>0.0.1-SNAPSHOT</aspectProject.version>
<spring-framework.version>4.1.2.RELEASE</spring-framework.version>
<org.aspectj-version>1.7.0</org.aspectj-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<!-- AspectProject dependencies -->
<dependency>
<groupId>com.example.aop</groupId>
<artifactId>AspectProject</artifactId>
<version>${aspectProject.version}</version>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/java/</sourceDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<!-- compile for Java 1.7 -->
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<encoding>${project.build.sourceEncoding}</encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.4</version>
<configuration>
<showWeaveInfo>true</showWeaveInfo>
<aspectLibraries>
<aspectLibrary>
<groupId>com.example.aop</groupId>
<artifactId>AspectProject</artifactId>
</aspectLibrary>
</aspectLibraries>
<complianceLevel>${maven.compiler.source}</complianceLevel>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
<executions>
<execution>
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
- サービスクラス
@Component
public class TestService {
private String value;
public void internalCall() {
System.out.println("INTERNAL_CALL :"+ getValue());
}
@TestAnnotation("RETURNED_FROM_ASPECT_CALL")
public String getValue() {
return value;
}
public void setValue(String iValue) {
this.value = iValue;
}
}
- 春のcontext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
<!-- Enable AspectJ style of Spring AOP -->
<context:component-scan base-package="com.example.aop.client" />
<aop:aspectj-autoproxy />
<bean name="TestService" class="com.example.aop.client.service.TestService" />
<!-- Configure Aspect Beans, without this Aspects advice wont execute -->
<bean name="aspectProvider" class="com.example.aop.aspect.AspectProvider"/>
</beans>
- メインクラス
public class SpringMain {
public static void main(String[] args) {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("spring.xml");
TestService aTestService = ctx.getBean("TestService", TestService.class);
System.out.println("EXTERNAL_CALL: "+aTestService.getValue());
aTestService.internalCall();
ctx.close();
}
}
出力:
ASPECT: Returning annotation value.
EXTERNAL_CALL:RETURNED_FROM_ASPECT_CALL
INTERNAL_CALL: **null**
期待される:
ASPECT: Returning annotation value.
EXTERNAL_CALL: RETURNED_FROM_ASPECT_CALL
INTERNAL_CALL: **RETURNED_FROM_ASPECT_CALL**
エントリが抜けていたり、構成を変更する必要がある場合は、アドバイスをお願いします。貴重なお時間をいただきありがとうございます。