Intellij Idea 在多模块Maven项目中公共依赖模块导致找不到主类错误”

cigdeys3  于 2024-01-05  发布在  Maven
关注(0)|答案(1)|浏览(234)

我遇到了一个多模块Maven项目的问题。当我在IntelliJ IDEA中运行应用程序时，一切都编译并顺利运行。但是，当我试图使用Maven Package 器从终端使用命令./mvnw clean install -DskipTests构建项目时，我遇到了一个编译错误，表明没有一个包含在公共模块中的类可以找到。下面是错误输出的一部分：
x1c 0d1x的数据

  1. [INFO] Reactor Summary for event_driven_design_eshop 0.0.1-SNAPSHOT:
  2. [INFO]
  3. [INFO] event_driven_design_eshop .......................... SUCCESS [  1.136 s]
  4. [INFO] api_gateway ........................................ SUCCESS [  2.227 s]
  5. [INFO] common ............................................. SUCCESS [  1.174 s]
  6. [INFO] eshop-core ......................................... SUCCESS [  0.173 s]
  7. [INFO] order_service ...................................... FAILURE [  0.708 s]
  8. [INFO] product_service .................................... SKIPPED
  9. [INFO] user-service ....................................... SKIPPED
  10. [INFO] payment-service .................................... SKIPPED
  11. [INFO] shipping-service ................................... SKIPPED
  12. [INFO] discovery_server ................................... SKIPPED
  13. [INFO] ------------------------------------------------------------------------
  14. [INFO] BUILD FAILURE
  15. [INFO] ------------------------------------------------------------------------
  16. [INFO] Total time:  5.855 s
  17. [INFO] Finished at: 2023-11-13T19:32:08+01:00
  18. [INFO] ------------------------------------------------------------------------ 
  19. [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.11.0:compile (default-compile) on project order_service: Compilation failure: Compilation failure:
  20. [ERROR] /Users/jchaaban/IdeaProjects/event_driven_design_eshop/eshop_core/order_service/src/main/java/com/jchaaban/orders_service/handler/query/OrderFetchingHandler.java:[3,33] package com.jchaaban.common.query does not exist
  21. [ERROR] /Users/jchaaban/IdeaProjects/event_driven_design_eshop/eshop_core/order_service/src/main/java/com/jchaaban/orders_service/repository/OrderEntity.java:[3,33] package com.jchaaban.common.model does not exist
  22. [ERROR] /Users/jchaaban/IdeaProjects/event_driven_design_eshop/eshop_core/order_service/src/main/java/com/jchaaban/orders_service/handler/query/OrderFetchingHandler.java:[26,36] cannot find symbol
  23. ....

字符串
所以在通用模块中的所有类都找不到。
在此之后，如果我尝试在IDE中运行应用程序，我会收到一个错误，指出在eshop_module的子模块列表中找不到第一个模块的主类。
假设这是eshop_module/pom. xml文件中的模块列表，

  1. <modules>
  2.         <module>order_service</module>
  3.         <module>product_service</module>
  4.         <module>user_service</module>
  5.         <module>payment_service</module>
  6.         <module>shipping_service</module>
  7.     </modules>

型
在运行IntelliJ中的服务后，无法找到order_service的主类。如果我重新排列模块顺序，使product_service首先列出，product_service主类也会出现同样的问题。
作为一个临时解决方案，我发现更改根包名称（在遇到问题的服务中，例如order_service）可以让我再次在IDE中运行项目。但是，如果我随后尝试在终端中使用Maven运行它，错误就会再次出现，需要重复相同的过程来恢复IntelliJ中的功能。
此问题在每个服务中持续存在，具体取决于通用模块。
这是根项目的pom文件：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  6.     <parent>
  7.         <groupId>org.springframework.boot</groupId>
  8.         <artifactId>spring-boot-starter-parent</artifactId>
  9.         <version>3.1.4</version>
  10.         <relativePath/> <!-- lookup parent from repository -->
  11.     </parent>
  13.     <groupId>com.jchaaban</groupId>
  14.     <artifactId>event_driven_design_eshop</artifactId>
  15.     <version>0.0.1-SNAPSHOT</version>
  16.     <packaging>pom</packaging>
  17.     <name>event_driven_design_eshop</name>
  18.     <description>event_driven_design_eshop</description>
  20.     <properties>
  21.         <java.version>17</java.version>
  22.     </properties>
  24.     <modules>
  25.         <module>api_gateway</module>
  26.         <module>eshop_core</module>
  27.         <module>discovery_server</module>
  28.         <module>common</module>
  29.     </modules>
  31.     <dependencies>
  32.         <dependency>
  33.             <groupId>org.springframework.boot</groupId>
  34.             <artifactId>spring-boot-starter-web</artifactId>
  35.         </dependency>
  37.         <dependency>
  38.             <groupId>org.projectlombok</groupId>
  39.             <artifactId>lombok</artifactId>
  40.             <optional>true</optional>
  41.         </dependency>
  42.         <dependency>
  43.             <groupId>org.springframework.boot</groupId>
  44.             <artifactId>spring-boot-starter-test</artifactId>
  45.             <scope>test</scope>
  46.         </dependency>
  47.     </dependencies>
  49.     <build>
  50.         <plugins>
  51.             <plugin>
  52.                 <groupId>org.springframework.boot</groupId>
  53.                 <artifactId>spring-boot-maven-plugin</artifactId>
  54.                 <configuration>
  55.                     <excludes>
  56.                         <exclude>
  57.                             <groupId>org.projectlombok</groupId>
  58.                             <artifactId>lombok</artifactId>
  59.                         </exclude>
  60.                     </excludes>
  61.                 </configuration>
  62.             </plugin>
  63.         </plugins>
  64.     </build>
  66. </project>

型
这是公共模块的pom.xml文件，它是eshop_core的依赖项，因此它将是eshop_core的每个子模块的依赖项：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>event_driven_design_eshop</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <artifactId>common</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>common</name>
  14.     <description>common</description>
  16.     <dependencies>
  17.         <dependency>
  18.             <groupId>org.axonframework</groupId>
  19.             <artifactId>axon-spring-boot-starter</artifactId>
  20.             <version>4.9.0</version>
  21.         </dependency>
  22.     </dependencies>
  24.     <build>
  25.         <plugins>
  26.             <plugin>
  27.                 <groupId>org.springframework.boot</groupId>
  28.                 <artifactId>spring-boot-maven-plugin</artifactId>
  29.             </plugin>
  30.         </plugins>
  31.     </build>
  33. </project>

型
这是eshop_core的pom文件，它是根项目的子模块，也是所有其他模块的父模块：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>event_driven_design_eshop</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <modules>
  12.         <module>order_service</module>
  13.         <module>product_service</module>
  14.         <module>user_service</module>
  15.         <module>payment_service</module>
  16.         <module>shipping_service</module>
  17.     </modules>
  19.     <artifactId>eshop_core</artifactId>
  20.     <version>0.0.1-SNAPSHOT</version>
  21.     <name>eshop-core</name>
  22.     <description>eshop-core</description>
  23.     <packaging>pom</packaging>
  25.     <properties>
  26.         <java.version>17</java.version>
  27.         <spring-cloud.version>2022.0.4</spring-cloud.version>
  28.     </properties>
  30.     <dependencies>
  31.         <dependency>
  32.             <groupId>org.springframework.cloud</groupId>
  33.             <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
  34.         </dependency>
  36.         <dependency>
  37.             <groupId>org.axonframework</groupId>
  38.             <artifactId>axon-spring-boot-starter</artifactId>
  39.             <version>4.9.0</version>
  40.         </dependency>
  42.         <dependency>
  43.             <groupId>org.springframework.boot</groupId>
  44.             <artifactId>spring-boot-starter-data-jpa</artifactId>
  45.         </dependency>
  47.         <dependency>
  48.             <groupId>com.google.guava</groupId>
  49.             <artifactId>guava</artifactId>
  50.             <version>32.1.3-jre</version>
  51.         </dependency>
  53.         <dependency>
  54.             <groupId>org.postgresql</groupId>
  55.             <artifactId>postgresql</artifactId>
  56.             <version>42.6.0</version>
  57.         </dependency>
  59.         <dependency>
  60.             <groupId>com.jchaaban</groupId>
  61.             <artifactId>common</artifactId>
  62.             <version>0.0.1-SNAPSHOT</version>
  63.         </dependency>
  65.     </dependencies>
  67.     <dependencyManagement>
  68.         <dependencies>
  69.             <dependency>
  70.                 <groupId>org.springframework.cloud</groupId>
  71.                 <artifactId>spring-cloud-dependencies</artifactId>
  72.                 <version>${spring-cloud.version}</version>
  73.                 <type>pom</type>
  74.                 <scope>import</scope>
  75.             </dependency>
  76.         </dependencies>
  77.     </dependencyManagement>
  79.     <build>
  80.         <plugins>
  81.             <plugin>
  82.                 <groupId>org.springframework.boot</groupId>
  83.                 <artifactId>spring-boot-maven-plugin</artifactId>
  84.             </plugin>
  85.         </plugins>
  86.     </build>
  88. </project>

型
现在eshop_core、order_service的子模块：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>eshop_core</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <artifactId>order_service</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>order_service</name>
  14.     <description>order_service</description>
  16.     <dependencies>
  17.         <dependency>
  18.             <groupId>org.hdrhistogram</groupId>
  19.             <artifactId>HdrHistogram</artifactId>
  20.             <version>2.1.12</version>
  21.             <scope>compile</scope>
  22.         </dependency>
  23.     </dependencies>
  25.     <build>
  26.         <plugins>
  27.             <plugin>
  28.                 <groupId>org.springframework.boot</groupId>
  29.                 <artifactId>spring-boot-maven-plugin</artifactId>
  30.             </plugin>
  31.         </plugins>
  32.     </build>
  34. </project>

型
payment_service：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>eshop_core</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <artifactId>payment_service</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>payment-service</name>
  14.     <description>payment-service</description>
  16.     <build>
  17.         <plugins>
  18.             <plugin>
  19.                 <groupId>org.springframework.boot</groupId>
  20.                 <artifactId>spring-boot-maven-plugin</artifactId>
  21.             </plugin>
  22.         </plugins>
  23.     </build>
  25. </project>

型
产品服务：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>eshop_core</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <artifactId>product_service</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>product_service</name>
  14.     <description>product_service</description>
  17.     <build>
  18.         <plugins>
  19.             <plugin>
  20.                 <groupId>org.springframework.boot</groupId>
  21.                 <artifactId>spring-boot-maven-plugin</artifactId>
  22.             </plugin>
  23.         </plugins>
  24.     </build>
  26. </project>

型
shipping_service：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>eshop_core</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  10.     <groupId>com.example</groupId>
  11.     <artifactId>shipping_service</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>shipping-service</name>
  14.     <description>shipping-service</description>
  15.     <properties>
  16.         <java.version>17</java.version>
  17.     </properties>
  19.     <build>
  20.         <plugins>
  21.             <plugin>
  22.                 <groupId>org.springframework.boot</groupId>
  23.                 <artifactId>spring-boot-maven-plugin</artifactId>
  24.             </plugin>
  25.         </plugins>
  26.     </build>
  28. </project>

型
用户服务：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  3.          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  4.     <modelVersion>4.0.0</modelVersion>
  5.     <parent>
  6.         <groupId>com.jchaaban</groupId>
  7.         <artifactId>eshop_core</artifactId>
  8.         <version>0.0.1-SNAPSHOT</version>
  9.     </parent>
  11.     <artifactId>user_service</artifactId>
  12.     <version>0.0.1-SNAPSHOT</version>
  13.     <name>user-service</name>
  14.     <description>user-service</description>
  16.     <build>
  17.         <plugins>
  18.             <plugin>
  19.                 <groupId>org.springframework.boot</groupId>
  20.                 <artifactId>spring-boot-maven-plugin</artifactId>
  21.             </plugin>
  22.         </plugins>
  23.     </build>
  25. </project>

型
这个错误有什么具体原因吗？

intellij-idea

1条答案

按热度按时间
qf9go6mv

qf9go6mv1#

我不确定，但是如果你像库项目一样使用这个模块，你必须告诉构建系统不要试图为这些项目（order_service和product_service）构建一个可执行的jar。为此，你必须从这些模块（pom）中删除以下块：

  1. <build>
  2.   <plugins>
  3.     <plugin>
  4.       <groupId>org.springframework.boot</groupId>
  5.       <artifactId>spring-boot-maven-plugin</artifactId>
  6.     </plugin>
  7.   </plugins>
  8. </build>

字符串
参考：https://spring.io/guides/gs/multi-module/

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