我已经成功地将 Aspects 与 CTW 结合使用了一段时间,尽管总是用于编织我链接的代码,而不是我编译的代码。
在一个测试项目中,重用允许我使 CTW 适用于外部类的配置,我一直在尝试编写我编译的代码,但没有成功。
我将非常感谢任何可以帮助我发现我在这里做错的地方的人。
预期的行为是拦截
com.budwhite.studying.aspect.logging.service
包中的所有方法调用,在执行前打印一条日志消息,并在执行后打印另一条日志消息。
我尝试将
aspectj-report
目标添加到 aspectj-maven-plugin
执行中,生成的文档 do say 我的 LoggingAspect
正在建议该包中的类 - 但实际上,当这些方法时,方面逻辑不会执行被调用 - 我在 .class
文件中看不到编织方面代码的任何痕迹。
所有配置都可以在我链接的 GH 存储库中找到,但以下是
execution
尝试的主要内容(这是我在其他项目中成功使用的方法,编织了我链接的代码):
pom.xml
<?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>com.budwhite.studying</groupId>
<artifactId>aspect-logging</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<logback.version>1.3.11</logback.version>
<aspectj.version>1.8.13</aspectj.version>
</properties>
<dependencies>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.7</version>
<configuration>
<showWeaveInfo>true</showWeaveInfo>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
<Xlint>ignore</Xlint>
<complianceLevel>${maven.compiler.source}</complianceLevel>
<encoding>UTF-8</encoding>
<verbose>true</verbose>
<sources>
<source>
<basedir>src/main/java</basedir>
<includes>
<include>**/LoggingAspect.java</include>
</includes>
</source>
</sources>
</configuration>
<executions>
<execution>
<!-- IMPORTANT -->
<phase>process-sources</phase>
<goals>
<goal>aspectj-report</goal>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.9</version>
<configuration>
<argLine>-XX:-UseSplitVerifier</argLine>
<argLine>
-javaagent:${user.home}/.m2/repository/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar
</argLine>
<useSystemClassLoader>true</useSystemClassLoader>
</configuration>
</plugin>
</plugins>
</build>
</project>
aop.xml
<aspectj>
<weaver options="-verbose -showWeaveInfo">
<include within="**.LoggingAspect"/>
<include within="com.budwhite.studying.aspect.logging.service..*"/>
</weaver>
<aspects>
<!-- Aspects -->
<aspect name="**.LoggingAspect"/>
</aspects>
</aspectj>
LoggingAspect.java
package com.budwhite.studying.aspect.logging.aspect;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Arrays;
import java.util.stream.Collectors;
import static java.lang.System.currentTimeMillis;
@Aspect
public class LoggingAspect {
private static final Logger logger = LoggerFactory.getLogger(LoggingAspect.class);
@Around("execution(* com.budwhite.studying.aspect.logging.service..*(..))")
public Object whatever(ProceedingJoinPoint thisJoinPoint) throws Throwable {
System.out.println("EVEN IF I DID SOMETHING WRONG WITH SLF4J, THIS PRINTOUT SHOULD SHOW UP");
logger.warn("{} begins, args are [{}]",
thisJoinPoint.getSignature().getName(),
Arrays.stream(thisJoinPoint.getArgs())
.map(Object::toString)
.collect(Collectors.joining(",")));
long startTime = currentTimeMillis();
Object result = thisJoinPoint.proceed();
logger.warn("{} ends, execution time {} ms, output is {}",
thisJoinPoint.getSignature().getName(),
currentTimeMillis()-startTime,
result!=null ? result : ""
);
return result;
}
}
过度配置是导致您的问题的原因。只需删除
<sources/>
部分,该部分限制 AspectJ 编译器仅编译切面,而不编译剩余的代码。如果您这样做,您的示例项目将立即生效。
无论如何,这是 POM 的一个更精简的版本,使用
dev.aspectj
插件而不是 Mojohaus 插件(尽管将该插件升级到 1.14.0 对于 Java 8 或 11 也足够了)。截至今天,Mojohaus 插件仍然不支持 Java 17+,而 AspectJ.dev 则支持。
<?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>com.budwhite.studying</groupId>
<artifactId>aspect-logging</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<logback.version>1.3.11</logback.version>
<aspectj.version>1.9.20.1</aspectj.version>
</properties>
<dependencies>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.11.0</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<groupId>dev.aspectj</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.13.1</version>
<configuration>
<complianceLevel>${maven.compiler.source}</complianceLevel>
<showWeaveInfo>true</showWeaveInfo>
<Xlint>ignore</Xlint>
<encoding>UTF-8</encoding>
</configuration>
<executions>
<execution>
<goals>
<goal>aspectj-report</goal>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</build>
</project>
还请删除您的aop.xml,因为您没有使用加载时编织,也不应该在您的测试中使用,因为使用 CTW 根本没有必要。