假设我有一个通用的多模块Maven项目，其中的模块被用作跨多个项目的依赖项，我想将我的方面编织到Hikari依赖类中，并使这个逻辑位于这些公共模块的ON上，使那些常见的多模块用户编织成Hikari JAR.正如我猜测的那样，需要执行以下步骤:
我对步骤2-3的可能性感到有点困惑，没有找到任何可靠的指南或文档参考.对于依赖项用户来说，所有的更改都是无缝的，这是否可能？看或玩的项目:git-repo
首先，我确实认为AspectJ不是这个特殊情况的合适 Select ，因为您使用的是spring-framework，您可以使用BeanPostProcessor和datasource-proxy project构建更优雅的解决方案，smth.比如:
public class DiagDataSourcePostProcessor implements BeanPostProcessor {
@Override
public Object postProcessAfterInitialization(@NonNull Object bean, @NonNull String beanName) throws BeansException {
if (!(bean instanceof DataSource)) {
return bean;
}
ProxyDataSourceBuilder builder = ProxyDataSourceBuilder.create(beanName, (DataSource) bean);
builder.listener(new JdbcLifecycleEventListenerAdapter() {
public void beforeClose(MethodExecutionContext executionContext) {
if (executionContext.getTarget() instanceof Connection) {
// some logic here
}
}
public void afterGetConnection(MethodExecutionContext executionContext) {
// some logic here
}
});
return builder.build();
}
}
@Bean
public static BeanPostProcessor diagDataSourcePostProcessor() {
return new DiagDataSourcePostProcessor();
}
至于您的AspectJ项目，它包含一些实际上阻碍您实现目标的气味:
aspectj个模块转换为"应用程序"，但这应该是一个"库"，因此，聚合POM(demo)应该如下所示:<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.1.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>aspectj-demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>17</java.version>
</properties>
<modules>
<module>aspectj</module>
<module>some-app</module>
</modules>
</project>
aspectj模块的目的是构建HikariCP(in case of compile-time weaving)的某种"增强"版本，所以从"库观察者"的Angular 来看，它不应该"依赖"HikariCP，否则应用程序类路径将包含HikariCP库的两个版本:"增强"和原始版本，因此，aspectjpom应该如下所示:<?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>
<parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>org.example</groupId>
<artifactId>aspectj</artifactId>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.9.20</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<scope>provided</scope>
<optional>true</optional>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
<version>5.0.1</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.14.0</version>
<configuration>
<complianceLevel>11</complianceLevel>
<showWeaveInfo>true</showWeaveInfo>
<verbose>true</verbose>
<Xlint>ignore</Xlint>
<weaveDependencies>
<weaveDependency>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
</weaveDependency>
</weaveDependencies>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
some-app)应该依赖于aspectj模块，而不是依赖于HikariCP，所以，最终我们得到:<?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>
<parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>org.example</groupId>
<artifactId>some-app</artifactId>
<properties>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.example</groupId>
<artifactId>aspectj</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.5.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>3.1.4</version>
<exclusions>
<exclusion>
<groupId>com.zaxxer</groupId>
<artifactId>HikariCP</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
不幸的是，上面的配置是不可靠的，问题是它确实可以在Maven环境中工作，但它不可能在IDE中顺利工作.