Question

我在使用Maven和AspectJ编译项目时遇到了麻烦。

这是POM摘录aspectj-maven-plugin（摘自有效POM）：

<plugin>
    <groupId>org.codehaus.mojo</groupId>
    <artifactId>aspectj-maven-plugin</artifactId>
    <version>1.7</version>
    <executions>
        <execution>
            <id>default-aj-compile</id>
            <phase>compile</phase>
            <goals>
                <goal>compile</goal>
            </goals>
            <configuration>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-core</artifactId>
                    </aspectLibrary>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-persistence</artifactId>
                    </aspectLibrary>
                    <aspectLibrary>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-aspects</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <showWeaveInfo>true</showWeaveInfo>
                <verbose>true</verbose>
                <Xlint>ignore</Xlint>
                <forceAjcCompile>true</forceAjcCompile>
                <complianceLevel>1.8</complianceLevel>
                <source>1.8</source>
                <target>1.8</target>
                <aspectDirectory>src/main/aspects</aspectDirectory>
                <testAspectDirectory>src/test/aspects</testAspectDirectory>
            </configuration>
        </execution>
        <execution>
            <id>default-aj-test-compile</id>
            <phase>test-compile</phase>
            <goals>
                <goal>test-compile</goal>
            </goals>
            <configuration>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-core</artifactId>
                    </aspectLibrary>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-test</artifactId>
                    </aspectLibrary>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-persistence</artifactId>
                    </aspectLibrary>
                    <aspectLibrary>
                        <groupId>org.springframework</groupId>
                        <artifactId>spring-aspects</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <showWeaveInfo>true</showWeaveInfo>
                <verbose>true</verbose>
                <Xlint>ignore</Xlint>
                <forceAjcCompile>true</forceAjcCompile>
                <complianceLevel>1.8</complianceLevel>
                <source>1.8</source>
                <target>1.8</target>
                <aspectDirectory>src/main/aspects</aspectDirectory>
                <testAspectDirectory>src/test/aspects</testAspectDirectory>
            </configuration>
        </execution>
        <execution>
            <id>default-aj-generate-sources</id>
            <phase>generate-sources</phase>
            <goals>
                <goal>compile</goal>
            </goals>
            <configuration>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-persistence</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <showWeaveInfo>true</showWeaveInfo>
                <verbose>true</verbose>
                <Xlint>ignore</Xlint>
                <forceAjcCompile>true</forceAjcCompile>
                <complianceLevel>1.8</complianceLevel>
                <source>1.8</source>
                <target>1.8</target>
                <aspectDirectory>src/main/aspects</aspectDirectory>
                <testAspectDirectory>src/test/aspects</testAspectDirectory>
            </configuration>
        </execution>
        <execution>
            <id>default-aj-generate-test-sources</id>
            <phase>generate-test-sources</phase>
            <goals>
                <goal>test-compile</goal>
            </goals>
            <configuration>
                <aspectLibraries>
                    <aspectLibrary>
                        <groupId>org.jcz</groupId>
                        <artifactId>jcz-persistence</artifactId>
                    </aspectLibrary>
                </aspectLibraries>
                <showWeaveInfo>true</showWeaveInfo>
                <verbose>true</verbose>
                <Xlint>ignore</Xlint>
                <forceAjcCompile>true</forceAjcCompile>
                <complianceLevel>1.8</complianceLevel>
                <source>1.8</source>
                <target>1.8</target>
                <aspectDirectory>src/main/aspects</aspectDirectory>
                <testAspectDirectory>src/test/aspects</testAspectDirectory>
            </configuration>
        </execution>
    </executions>
    <dependencies>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.8.5</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.5</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjtools</artifactId>
            <version>1.8.5</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>
    <configuration>
        <showWeaveInfo>true</showWeaveInfo>
        <verbose>true</verbose>
        <Xlint>ignore</Xlint>
        <forceAjcCompile>true</forceAjcCompile>
        <complianceLevel>1.8</complianceLevel>
        <source>1.8</source>
        <target>1.8</target>
        <aspectDirectory>src/main/aspects</aspectDirectory>
        <testAspectDirectory>src/test/aspects</testAspectDirectory>
    </configuration>
</plugin>

启动mvn clean deploy时，我得到了这些内容：

[INFO] --- aspectj-maven-plugin:1.7:test-compile (default-aj-generate-test-sources) @ jcz-persistence-jpa ---
[INFO] 'org.jcz.persistence.jpa.model.Band' (Band.java:45) is annotated with @Entity type annotation from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:79)
[INFO] 'org.jcz.persistence.jpa.model.Band' (Band.java:45) is annotated with @UUID type annotation from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:80)
[INFO] Extending interface set for type 'org.jcz.persistence.jpa.model.Band' (Band.java) to include 'org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID' (UUIDSupportAspect.aj)
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'boolean org.jcz.persistence.EntitySupport.equals(java.lang.Object)')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'java.lang.String org.jcz.persistence.EntitySupport.toSuperString()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'java.lang.String org.jcz.persistence.EntitySupport.toString()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'org.jcz.persistence.UniqueIdentifier org.jcz.persistence.EntitySupport.uniqueIdentifier()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'java.util.Comparator<java.lang.reflect.Method> org.jcz.persistence.EntitySupport.retrieveComparatorForAction(java.lang.Class<? extends java.lang.annotation.Annotation>)')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'java.lang.String org.jcz.persistence.EntitySupport.retrieveDescriptionForAction(java.lang.annotation.Annotation)')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.invokeActions(java.lang.Class<? extends java.lang.annotation.Annotation>)')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPrePersist()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPostPersist()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPreUpate()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPostUpdate()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPreRemove()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.EntitySupportAspect' (EntitySupportAspect.aj:'void org.jcz.persistence.EntitySupport.doPostRemove()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped field from 'org.jcz.aspects.persistence.UUIDSupportAspect' (UUIDSupportAspect.aj:'java.lang.String org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID.id')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.UUIDSupportAspect' (UUIDSupportAspect.aj:'java.io.Serializable org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID.getId()')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.UUIDSupportAspect' (UUIDSupportAspect.aj:'void org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID.setId(java.io.Serializable)')
[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.UUIDSupportAspect' (UUIDSupportAspect.aj:'void org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID.ensureId()')

只是将范围缩小到一个案例：

[INFO] Type 'org.jcz.persistence.jpa.model.Band' (Band.java) has intertyped method from 'org.jcz.aspects.persistence.UUIDSupportAspect' (UUIDSupportAspect.aj:'java.io.Serializable org.jcz.aspects.persistence.UUIDSupportAspect$WithUUID.getId()')

因此，看起来方法getId()被正确地注入到类Band中。但是，当Maven继续测试编译和单元测试时：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:testCompile (default-testCompile) on project jcz-persistence-jpa: Compilation failure: Compilation failure:

以及其他错误细节，我得到了

[ERROR] /home/stefano/projects/java/jcz-persistence-jpa/src/test/java/org/jcz/persistence/jpa/ServiceTestCase.java:[182,45] cannot find symbol
[ERROR] symbol:   method getId()
[ERROR] location: variable persisted of type org.jcz.persistence.jpa.model.Band
[ERROR] /home/stefano/projects/java/jcz-persistence-jpa/src/test/java/org/jcz/persistence/jpa/ServiceTestCase.java:[182,60]

好像我的所有intertype声明的东西都没有注入，毕竟。

要检查代码中是否有错误，我尝试在Eclipse中运行JUnit测试，一切正常。

所以我猜maven编译过程中有些东西我没有正确设置。

任何人都可以帮我理解导致问题的原因吗？

Answer 1

最后想出了一个解决方案。离开这里。

我为解决这个问题所做的是配置maven-compiler-plugin，就像那样：

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>${maven-compiler-plugin.version}</version>
    <configuration>
        <source>1.${java.version}</source>
        <target>1.${java.version}</target>
        <useIncrementalCompilation>false</useIncrementalCompilation>
    </configuration>
</plugin>

其中最重要的部分是 <useIncrementalCompilation>false</useIncrementalCompilation>

Answer 2

要使类型间声明与Aspectj-Maven-plugin一起使用，需要通过添加选项failOnError来配置maven-compiler-plugin：

            <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.8.1</version>
            <configuration>
                <failOnError>false</failOnError>
            </configuration>
        </plugin>

解决方案取自https://fw-geekycoder.blogspot.com/2010/05/aspectj-inter-type-declaration.html

aspectj - 不使用Maven的Intertype方法声明

2 个答案: