没有javaagent参数,java AspectJ无法运行
我试图在一个简单的java应用程序中使用AspectJ,而不使用Spring。 项目由maven控制
这是项目代码,您也可以在GitHub上看到它
应用程序。java
package ge.jibo.aspectj;
public class App {
public static void main(String[] args) {
App app = new App();
app.print("Message from App object...");
}
public void print(String value) {
System.out.println(value);
}
}
LoggerAspect。java
package ge.jibo.aspectj;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
@Aspect
public class LoggerAspect {
@Around("execution(!static * *(..))")
public Object dontLogDuplicates(ProceedingJoinPoint thisJoinPoint) throws Throwable {
System.out.println("Message from LoggerAspect object");
return thisJoinPoint.proceed();
}
}
aop。xml在resources\META-INF
目录中
<?xml version="1.0" encoding="UTF-8"?>
<aspectj>
<aspects>
<aspect name="ge.jibo.aspectj.LoggerAspect"/>
</aspects>
<weaver options="-verbose -showWeaveInfo">
<include within="ge.jibo.aspectj..*"/>
</weaver>
</aspectj>
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>ge.jibo.aspectj</groupId>
<artifactId>aspectj-demo</artifactId>
<version>1.0</version>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.9.6</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.6</version>
</dependency>
</dependencies>
<build>
<finalName>${project.artifactId}</finalName>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>${maven.compiler.source}</source>
<target>${maven.compiler.target}</target>
</configuration>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>3.0.2</version>
<configuration>
<archive>
<index>true</index>
<manifest>
<mainClass>ge.jibo.aspectj.App</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
生成mvn install
{java -jar aspectj-demo.jar
命令执行JAR
,但只执行App对象,LoggerAspect不会打印任何内容
如果我将带有aspectjweaver-1.9.6.jar
的-javaagent
参数传递给JVM,则执行Aspect对象。
- 如何避免每次都传递这个
-javaagent
参数李> - 我应该在
pom.xml
中添加一些插件来直接执行方面吗李>
# 1 楼答案
一个简单的解决方案/解决方法是为编译时编织添加
aspectj-maven-plugin
(在本例中,不再需要aop.xml
文件)并使用
maven-assembly-plugin
将项目及其依赖项打包到可执行jar中(还有其他方法可以使用libs/dependentials打包可执行jar)pom。xml
执行
mvn install
会生成额外的jar文件aspectj-demo-jar-with-dependencies.jar
java -jar aspectj-demo-jar-with-dependencies.jar