使用Spring Boot向Maven模块添加“ test-jar”依赖项后，集成测试失败

分类：编程问答

如何解决使用Spring Boot向Maven模块添加“ test-jar”依赖项后，集成测试失败

我有一个配置如下的多模块Maven / Spring Boot（v2.3.3）应用程序：

my-project (pom)
  \__ project-core (jar)  - entities,repositories and service beans only
   \__ project-api (war)  - web and api controllers only

POM文件如下：

基础项目（pom）：

<?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>2.3.3.RELEASE</version>
        <relativePath />
    </parent>
    <packaging>pom</packaging>
    <groupId>my</groupId>
    <artifactId>project</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <modules>
        <module>project-core</module>
        <module>project-api</module>
    </modules>

    <properties>
        <java.version>11</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <dependencies>
        <!-- TEST DEPENDENCIES -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>**/*IT</exclude>
                    </excludes>
                </configuration>
            </plugin>
            
            <plugin>
                <artifactId>maven-failsafe-plugin</artifactId>
                <configuration>
                    <includes>
                        <include>**/*IT</include>
                    </includes>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>integration-test</goal>
                            <goal>verify</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

核心模块（jar）：

<?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>my</groupId>
        <artifactId>project</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>project-core</artifactId>
    <packaging>jar</packaging>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.json.bind</groupId>
            <artifactId>javax.json.bind-api</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>
        <dependency>
            <groupId>org.eclipse</groupId>
            <artifactId>yasson</artifactId>
            <version>1.0.7</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish</groupId>
            <artifactId>javax.json</artifactId>
            <version>1.1.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.tika</groupId>
            <artifactId>tika-core</artifactId>
            <version>1.24.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>test-jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

API模块（战争）：

<?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>my</groupId>
        <artifactId>project</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>project-api</artifactId>
    <packaging>war</packaging>

    <dependencies>
        <dependency>
            <groupId>my</groupId>
            <artifactId>project-core</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- TEST DEPENDENCIES -->
        <dependency>
            <groupId>my</groupId>
            <artifactId>project-core</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <type>test-jar</type>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <classifier>exec</classifier>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

JUnit 5实施了一个自动化测试框架，用于两个模块（核心和api）中的单元测试和集成测试，一切正常且成功。

为了改进一种api集成测试，我不得不重用核心模块中的测试类。

要启用此功能，我必须将以下依赖项添加到API的模块pom.xml中：

<dependency>
  <groupId>my</groupId>
  <artifactId>project-core</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <type>test-jar</type>
  <scope>test</scope>
</dependency>

有了这种依赖性，api测试类可以“看到”核心测试类。

但是，当我运行集成测试时，现在出现以下错误：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-08-25 15:38:10.522 ERROR 32256 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:

The bean 'actionLogRepository',defined in my.project.core.repository.ActionLogRepository defined in @EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration,could not be registered. A bean with that name has already been defined in my.project.core.repository.ActionLogRepository defined in @EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration and overriding is disabled.

Action:

Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true

java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)
...

Caused by: org.springframework.beans.factory.support.BeanDefinitionOverrideException: Invalid bean definition with name 'actionLogRepository' defined in my.project.core.repository.ActionLogRepository defined in @EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration: Cannot register bean definition [Root bean: class [org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in luizalabs.cheetara.core.repository.ActionLogRepository defined in @EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration] for bean 'actionLogRepository': There is already [Root bean: class [org.springframework.data.mongodb.repository.support.MongoRepositoryFactoryBean]; scope=; abstract=false; lazyInit=false; autowireMode=0; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=null; factoryMethodName=null; initMethodName=null; destroyMethodName=null; defined in my.project.core.repository.ActionLogRepository defined in @EnableMongoRepositories declared on MongoRepositoriesRegistrar.EnableMongoRepositoriesConfiguration] bound.
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.registerBeanDefinition(DefaultListableBeanFactory.java:945)

阅读错误消息建议并进行一些研究后，将以下配置添加到我的“测试”配置文件中即可：

spring.main.allow-bean-definition-overriding=true

但是我的问题是：为什么在添加“ test-jar”依赖项后出现此错误？

Spring没有两次加载托管bean的明显原因。

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