java – Maven AspectJ – 所有步骤配置它

我有一个问题,应用方面到我的maven项目。可能我缺少一些东西,所以我已经列出了步骤。你能检查一下是否正确吗?

让我们说在projectA是一个方面类和在projectB类,应该改变方面。

>使用AspectJ类创建maven项目ProjectA
>添加Aspectj插件和依赖
>将ProjectA添加为projectB pom.xml的依赖项
>添加到projectB pom.xml插件

“。

<plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>aspectj-maven-plugin</artifactId>
        <version>1.4</version>
            <executions>
                <execution>
                    <goals>
                        <goal>compile</goal>
                        <goal>test-compile</goal>
                    </goals>
                </execution>
            </executions>
            <configuration>
                <source>${maven.compiler.source}</source>
                <target>${maven.compiler.target}</target>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>ProjectA</groupId>
                        <artifactId>ProjectA</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
            </configuration>
    </plugin>

>添加aspectj依赖

所有这些步骤后我的问题是,在编译期间我得到:

[WARNING] advice defined in AspectE has not been applied [Xlint:adviceDidNotMatch]

然后当我运行我的程序:

Exception in thread "FeatureExcutionThread" java.lang.NoClassDefFoundError: AspectE
我跟踪你的一些老的问题,以试图找出你实际上是什么。我想出了以下结构和代码,对我来说它工作得很好。

$ tree .
.
├── pom.xml
├── ProjectA
|   ├── pom.xml
|   └── src
|       └── main
|           └── aspect
|               └── com
|                   └── stackoverflow
|                       └── aspects
|                           ├── AspectL.java
|                           └── Trace.aj
└── ProjectB
    ├── pom.xml
    └── src
        └── main
            └── java
                └── com
                    └── stackoverflow
                        └── App.java

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>org.stackoverflow</groupId>
    <artifactId>Q12423965</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>

    <name>${project.artifactId}-${project.version}</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.6</maven.compiler.source>
        <maven.compiler.target>1.6</maven.compiler.target>
    </properties>

    <modules>
        <module>ProjectA</module>
        <module>ProjectB</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.stackoverflow</groupId>
                <artifactId>Q12423965-ProjectA</artifactId>
                <version>${project.version}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>aspectj-maven-plugin</artifactId>
                    <version>1.4</version>
                    <executions>
                        <execution>
                            <goals>
                                <goal>compile</goal>
                                <goal>test-compile</goal>
                            </goals>
                        </execution>
                    </executions>
                    <configuration>
                        <source>${maven.compiler.source}</source>
                        <target>${maven.compiler.target}</target>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>2.5.1</version>
                    <configuration>
                        <source>${maven.compiler.source}</source>
                        <target>${maven.compiler.target}</target>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>
</project>

ProjectA / 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>

    <parent>
        <groupId>org.stackoverflow</groupId>
        <artifactId>Q12423965</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>Q12423965-ProjectA</artifactId>

    <name>${project.artifactId}-${project.version}</name>

    <dependencies>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.6.11</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>aspectj-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

我创造了两个不同的方面。一个使用@AspectJ注释,另一个定义为经典的AspectJ方面。

AspectL.java

package com.stackoverflow.aspects;

import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;

/**
 * @author maba, 2012-09-18
 */
@Aspect
public class AspectL {

    @Pointcut("execution(* main(..))")
    public void defineEntryPoint() {
    }

    @Before("defineEntryPoint()")
    public void aaa(JoinPoint joinPoint) {
        System.out.println("aspect before");
    }

    @After("defineEntryPoint()")
    public void bbb(JoinPoint joinPoint) {
        System.out.println("aspect after");
    }
}

Trace.aj

package com.stackoverflow.aspects;

public aspect Trace {
    pointcut publicMethodExecuted(): execution(public !static * *(..));

    after(): publicMethodExecuted() {
        System.out.printf("Enters on method: %s. \n", thisJoinPoint.getSignature());

        Object[] arguments = thisJoinPoint.getArgs();
        for (int i =0; i < arguments.length; i++){
            Object argument = arguments[i];
            if (argument != null){
                System.out.printf("With argument of type %s and value %s. \n", argument.getClass().toString(), argument);
            }
        }
        System.out.printf("Exits method: %s. \n", thisJoinPoint.getSignature());
    }
}

这两个文件是ProjectA模块的一部分,是jar的一部分。

现在我们要使用这些方面并将它们编织到ProjectB的代码中。

ProjectB / 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>

    <parent>
        <groupId>org.stackoverflow</groupId>
        <artifactId>Q12423965</artifactId>
        <version>1.0-SNAPSHOT</version>
    </parent>

    <artifactId>Q12423965-ProjectB</artifactId>

    <name>${project.artifactId}-${project.version}</name>

    <dependencies>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.6.11</version>
        </dependency>
        <dependency>
            <groupId>org.stackoverflow</groupId>
            <artifactId>Q12423965-ProjectA</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>aspectj-maven-plugin</artifactId>
                <configuration>
                    <aspectLibraries>
                        <aspectLibrary>
                            <groupId>org.stackoverflow</groupId>
                            <artifactId>Q12423965-ProjectA</artifactId>
                        </aspectLibrary>
                    </aspectLibraries>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.2.1</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>java</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <mainClass>com.stackoverflow.App</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

App.java

package com.stackoverflow;

/**
 * @author maba, 2012-09-17
 */
public class App {

    public void hello(String name) {
    }

    public static void main(String[] args) {
        App app = new App();
        app.hello("world");
    }
}

我从顶部pom构建一切:

mvn clean install

然后进入ProjectB目录并运行应用程序:

mvn exec:java

其结果是:

aspect before
Enters on method: void com.stackoverflow.App.hello(String). 
With argument of type class java.lang.String and value world. 
Exits method: void com.stackoverflow.App.hello(String). 
aspect after

所以总结两个方面都是工作和maven设置也工作。

http://stackoverflow.com/questions/12423965/maven-aspectj-all-steps-to-configure-it

本站文章除注明转载外,均为本站原创或编译
转载请明显位置注明出处:java – Maven AspectJ – 所有步骤配置它