Spring AOP + AspectJ maven 插件 - 内部方法调用不起作用
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【中文标题】Spring AOP + AspectJ maven 插件 - 内部方法调用不起作用【英文标题】：Spring AOP + AspectJ maven plugin - Internal method call doesn't work 【发布时间】：2015-06-06 19:40:42 【问题描述】：Java + Spring + Maven 应用程序。 无法从基于注释的公共方法进行内部调用。
先决条件
-
Java 版本：1.7。
项目：AspectProject > 构建后它将创建 jar 文件。
客户端：AspectClient：具有“AspectProject”的依赖项。
AspectProject
-
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>$maven.compiler.target</target>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
-
AspectProvider
@Aspect
public class AspectProvider
/**
* This is the point cut for all get Method with @TestAnnotation annotation
*/
@Pointcut("execution(* get*()) && @annotation(aTestAnnotation)")
public void getMethodPointcut(TestAnnotation aTestAnnotation)
@Around("getMethodPointcut(aTestAnnotation)")
public Object getConfiguration(ProceedingJoinPoint iJoinPoint, TestAnnotation aTestAnnotation) throws Throwable
return getValueFromISTCompositeConfiguration(iJoinPoint, aTestAnnotation);
private Object getValueFromISTCompositeConfiguration(final ProceedingJoinPoint iProceedingJoinPoint, TestAnnotation aTestAnnotation) throws Throwable
Object aReturnValue = null;
if (aTestAnnotation.value() != null)
System.out.println("ASPECT: Returning annotation value.");
aReturnValue = aTestAnnotation.value();
else
System.out.println("MISSING_GETTER_PROPERTY");
if(aReturnValue == null)
aReturnValue = iProceedingJoinPoint.proceed();
return aReturnValue;
-
注释“TestAnnotation”
@Component
@Target(ElementType.METHOD, ElementType.PARAMETER, ElementType.ANNOTATION_TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface TestAnnotation
String value();
AspectClient
-
pom.xml
<properties>
<java.version>1.7</java.version>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<aspectProject.version>0.0.1-SNAPSHOT</aspectProject.version>
<spring-framework.version>4.1.2.RELEASE</spring-framework.version>
<org.aspectj-version>1.7.0</org.aspectj-version>
</properties>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>$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>
-
服务类
@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;
-
Spring 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>
-
主类
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();
输出：
ASPECT: Returning annotation value.
EXTERNAL_CALL:RETURNED_FROM_ASPECT_CALL
INTERNAL_CALL: **null**
预期：
ASPECT: Returning annotation value.
EXTERNAL_CALL: RETURNED_FROM_ASPECT_CALL
INTERNAL_CALL: **RETURNED_FROM_ASPECT_CALL**
如果我遗漏任何条目或需要更改配置，请告知。提前感谢您的宝贵时间。
【问题讨论】：
【参考方案1】：您所做的有点奇怪，因为一方面您将 Spring 配置为使用（自动）基于代理的 Spring AOP，另一方面您使用 AspectJ Maven 插件来使用本机 AspectJ 并进行编译时编织。请决定你想走哪条路：
对于 Spring AOP，您不需要 AspectJ 编译器，但随后您会坚持使用基于代理的“AOP lite”方法，其代价是内部调用不会被切面拦截，因为它们不通过代理，而是通过this（原始对象）。
对于成熟的 AspectJ，您可以配置 Spring 以使用 LTW（加载时编织），如手册章节 Using AspectJ with Spring applications 中所述。或者，您也可以使用编译时编织，但这不是必需的，除非您在应用程序启动期间遇到性能问题。
【讨论】：
感谢 Kriegaex。我是 aop 概念的新手。你是对的，我错误地弄乱了 Spring-aop 和 AspectJ 编译器。我想要 AspectJ 功能，以便内部调用被切面拦截。以上是关于Spring AOP + AspectJ maven 插件 - 内部方法调用不起作用的主要内容，如果未能解决你的问题，请参考以下文章