您可以使用AspectJ基于切入点声明错误和/或警告的能力。
免责声明:我从来没有使用过春节,所以我不是专家那里,只是做了一个例子没有多大意义的示范。
Spring Bean与原型范围:
package de.scrum_master.app;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
@Component
@Scope("prototype")
public class ScopedBean {}
的Spring bean缺少范围声明:
package de.scrum_master.app;
import org.springframework.stereotype.Component;
@Component
public class UnscopedBean {}
的Spring bean使用不同类型的自动布线:
这个bean使用构造函数和setter方法连线。如果取消注释字段声明中的注释,则甚至可以使用其他类型的接线。这没有任何意义,但我们希望在稍后的某个方面引发编译错误。
package de.scrum_master.app;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
@Component
@Scope("singleton")
public class BeanWithAutowire {
//@Autowired
private ScopedBean scopedBean;
@Autowired
public BeanWithAutowire(ScopedBean scopedBean) {
this.scopedBean = scopedBean;
}
@Autowired
public void setScopedBean(ScopedBean scopedBean) {
this.scopedBean = scopedBean;
}
}
方面的用于静态注释一致性检查:
package de.scrum_master.aspect;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Component;
public aspect BeanAnnotationChecker {
declare error :
@annotation(Component) && [email protected](Scope) :
"Spring component without scope declaration found";
declare error :
execution(@Autowired *.new(.., @Scope("prototype") *, ..)) && within(@Scope("singleton") *) :
"singleton bean auto-wired into prototype container via constructor";
declare error :
execution(@Autowired * *(.., @Scope("prototype") *, ..)) && within(@Scope("singleton") *) :
"singleton bean auto-wired into prototype container via setter method";
declare error :
set(@Autowired * *) && within(@Scope("singleton") *) :
"singleton bean auto-wired into prototype container via field assignment";
}
Maven的POM使用AspectJ编译器:
<?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>de.scrum-master.stackoverflow</groupId>
<artifactId>aspectj-fail-build</artifactId>
<version>1.0-SNAPSHOT</version>
<name>AspectJ - fail build for wrong/missing annotations</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.source-target.version>1.7</java.source-target.version>
<aspectj.version>1.8.4</aspectj.version>
<main-class>de.scrum_master.app.ScopedBean</main-class>
</properties>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>${java.source-target.version}</source>
<target>${java.source-target.version}</target>
<!-- IMPORTANT -->
<useIncrementalCompilation>false</useIncrementalCompilation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.7</version>
<configuration>
<showWeaveInfo>true</showWeaveInfo>
<source>${java.source-target.version}</source>
<target>${java.source-target.version}</target>
<Xlint>ignore</Xlint>
<complianceLevel>${java.source-target.version}</complianceLevel>
<encoding>UTF-8</encoding>
<verbose>true</verbose>
</configuration>
<executions>
<execution>
<!-- IMPORTANT -->
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.0.7.RELEASE</version>
</dependency>
</dependencies>
</project>
控制台输出mvn clean package
:
(...)
[INFO] ------------------------------------------------------------------------
[INFO] Building AspectJ - fail build for wrong/missing annotations 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
(...)
[ERROR] singleton bean auto-wired into prototype container via constructor
C:\Users\Alexander\Documents\java-src\SO_AJ_MavenFailBuildOnWrongAnnotation\src\main\java\de\scrum_master\app\BeanWithAutowire.java:14
public BeanWithAutowire(ScopedBean scopedBean) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ERROR] singleton bean auto-wired into prototype container via setter method
C:\Users\Alexander\Documents\java-src\SO_AJ_MavenFailBuildOnWrongAnnotation\src\main\java\de\scrum_master\app\BeanWithAutowire.java:19
public void setScopedBean(ScopedBean scopedBean) {
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[ERROR] Spring component without scope declaration found
C:\Users\Alexander\Documents\java-src\SO_AJ_MavenFailBuildOnWrongAnnotation\src\main\java\de\scrum_master\app\UnscopedBean.java:6
public class UnscopedBean {}
^^^^^^^^^^^
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
(...)
我认为这个例子除了AspectJ语法之外有些不言自明,但您可以在AspectJ手册或教程中阅读更多关于它的信息。如果在字段声明中取消对@Autowired
注释的注释,则将显示更多错误以用于显式字段分配。不过,AspectJ无法在单纯的字段声明(不带任务)上匹配。因此,无论您的开发人员何时依赖字段注释而不是注释的构造函数或设置方法,即您的代码中没有任何明确的字段分配,都不会出现编译错误。您可以通过匹配getter方法或代码中的字段读访问来间接地匹配字段来解决此问题。如果你自己无法弄清楚,请随时询问如何做到这一点。
我不知道用Spring本身进行验证。您可以使用自定义PMD或FindBugs规则来执行此操作。 – user944849 2014-11-21 20:28:23
你可以看看maven-enforcer-plugin,你可以实现自己的规则,这可能是你的一条路径...... – khmarbaise 2014-11-22 17:05:43