Maven

Question

我有 3 个项目，如下所示：

问题是通用数据库代码有一个转换器 class，我在运行业务逻辑时遇到以下错误。

Caused by: org.hibernate.AssertionFailure: AttributeConverter class [class com.td.sba.iep.jpa.converters.ModeltoDBAttributeConverter] registered multiple times

我做了什么：我尝试在 pom.xml.

中使用以下代码打包 Utility classes 时排除依赖项

            <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <!-- Fools the plugin into creating the code only jar instead of the runnable one -->
            <executions>
                <execution>
                    <goals>
                        <goal>repackage</goal>
                    </goals>
                    <configuration>
                        <classifier>exec</classifier>
                    </configuration>
                </execution>
            </executions>
        </plugin>

但是当我将创建的 exec jar 包含到业务逻辑中时，它显示找不到实用程序 classes。

我需要什么： 如何修复 'org.hibernate.AssertionFailure'？从实用程序 classes 创建 jar 时，我应该排除依赖项吗？我该怎么做？

万一重要，我正在使用 Eclipse。

附加pom.xml：业务逻辑

<?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>

    <!-- Use maven profiles to control Spring Boot profile. -->
    <profiles>
        <profile>
            <id>local</id>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
            <properties>
                <activeProfile>local</activeProfile>
            </properties>
        </profile>
        <profile>
            <id>dev</id>
            <properties>
                <activeProfile>dev</activeProfile>
            </properties>
        </profile>
    </profiles>
    <groupId>com.usermanagement</groupId>
    <artifactId>BusinessLogicClass</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>Business Logic</name>
    <description>Business Logic to handle user requests</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <org.mapstruct.version>1.2.0.Final</org.mapstruct.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-bean-validators</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.uuid</groupId>
            <artifactId>java-uuid-generator</artifactId>
            <version>3.1.4</version>
        </dependency>
        <dependency>
            <groupId>org.mapstruct</groupId>
            <artifactId>mapstruct-jdk8</artifactId>
            <version>1.2.0.Final</version>
        </dependency>
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jdk8</artifactId>
        </dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-orm</artifactId>
    <version>5.0.8.RELEASE</version>
</dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.javers</groupId>
            <artifactId>javers-core</artifactId>
            <version>3.11.4</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <scope>test</scope>
        </dependency>
  <dependency>
            <groupId>com.usermanagement</groupId>
            <artifactId>CommonDBLogic</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
  <dependency>
            <groupId>com.usermanagement</groupId>
            <artifactId>UtilityClasses</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>  
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>${java.version}</source> <!-- or higher, depending on your project -->
                    <target>${java.version}</target> <!-- or higher, depending on your project -->
                    <annotationProcessorPaths>
                        <path>
                            <groupId>org.mapstruct</groupId>
                            <artifactId>mapstruct-processor</artifactId>
                            <version>${org.mapstruct.version}</version>
                        </path>
                    </annotationProcessorPaths>
                    <compilerArgs>
                        <compilerArg>
                            -Amapstruct.defaultComponentModel=spring
                        </compilerArg>
                    </compilerArgs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <distributionManagement>
    </distributionManagement>


</project>

效用Class:

<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.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
 <properties>
  <java.version>1.8</java.version>
 </properties> 
 <groupId>com.usermanagement</groupId>
 <artifactId>UtilityClasses</artifactId>
 <version>0.0.1-SNAPSHOT</version>
 <name>UtilityClasses</name>
 <description>Utility Classes used by Business Logic class</description>
 <dependencies>
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <version>4.8.2</version>
   <scope>test</scope>
  </dependency>
    <dependency>
     <groupId>net.objectlab.kit</groupId>
     <artifactId>datecalc-common</artifactId>
     <version>1.4.0</version>
     </dependency>
     <dependency>
     <groupId>net.objectlab.kit</groupId>
     <artifactId>datecalc-jdk8</artifactId>
     <version>1.4.0</version>
     </dependency>
  <dependency>
            <groupId>org.javers</groupId>
            <artifactId>javers-core</artifactId>
            <version>3.11.4</version>
        </dependency>
  <dependency>
            <groupId>com.usermanagement</groupId>
            <artifactId>CommonDBLogic</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>  
 </dependencies>
 <build>
  <plugins>
   <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <configuration>
     <source>1.8</source>
     <target>1.8</target>
    </configuration>
   </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <version>1.6</version>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!-- Fools the plugin into creating the code only jar instead of the runnable one -->
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                        <configuration>
                            <classifier>exec</classifier>
                        </configuration>
                    </execution>
                </executions>
            </plugin>      
  </plugins>
 </build>
</project>

通用数据库逻辑：

<?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>com.usermanagement</groupId>
    <artifactId>CommonDBLogic</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>CommonDBLogic</name>
    <description>Common DB Logic used by Business class</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-validation</artifactId>
            <version>2.0.3.RELEASE</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-actuator</artifactId>
            <version>2.0.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-envers</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <version>2.0.2.RELEASE</version>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>19.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!-- Fools the plugin into creating the code only jar instead of the runnable one -->
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                        <configuration>
                            <classifier>exec</classifier>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <distributionManagement>
    </distributionManagement>

</project>

Answer 1

您是否尝试过在此项目依赖项上使用 <exclusions> 元素？喜欢：

业务逻辑项目pom.xml文件：

    <dependency>
        <groupId>com.utility.project</groupId>
        <artifactId>UtilityProject</artifactId>
        <version>1.0.0</version>
        <exclusions>
            <exclusion>
                <groupId>group.id.jar.you.want.to.exclude</groupId>
                <artifactId>artifact.id.jar.you.want.to.exclude</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

更新

由于您的 UtilityProject pom 已经具有 CommonDB 依赖项，因此请从您的业务逻辑 pom 中删除此 CommonDB 依赖项。此错误是因为您有 2 个 classes（相同的 class）以相同的名称注册。如果你已经有 CommonDB 对 UtilityProject 的依赖并且你使用这个 UtilityProject 作为对 Business 的依赖，你不需要导入它两次。

Maven - 如何从生成的 JAR 中排除依赖项

Maven - How to exclude dependencies from generated JAR

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