Java Maven没有从依赖模块中提取类

在我的

springboot

项目中，有两个微服务，一个配置服务器和一个命名服务器。它还有两个模块，我将它们作为依赖项添加到微服务中

<?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>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.highpeak.tlp</groupId>
    <artifactId>commons-new</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>commons-new</name>
    <description>Contains common modules needed by all the microservices</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <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>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

下面是

commons new

模块的

pom

，它应该是我的微服务中的一个依赖项

<?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>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.highpeak.tlp</groupId>
    <artifactId>commons-new</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>commons-new</name>
    <description>Contains common modules needed by all the microservices</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <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>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

但是，在IntelliJ编辑器中，这些类是可访问的，IntelliJ不会显示编译器错误。但当我在IntelliJ中运行应用程序时，它显示了相同的错误

我犯了什么错误？因为我添加了模块作为依赖项，所以它们的类应该是可用的，对吗

---

我的system maven版本是

3.5.4

从子模块中删除spring引导插件（常见的新版本）。 我也有类似的问题，但和gradle一起发现了这个问题

---

不幸的是，我不知道在子模块/子项目中“使用”spring引导插件的确切问题是什么。

spring引导插件包将所有依赖项jar打包并将它们拉入模块构建的jar中。这个jar的结构专门用于Spring Boot可运行的应用程序，与普通jar结构不兼容，因此不能将Spring Boot应用程序jar用作maven依赖项jar

对于

commons new

，应再次使用命令

mvn clean install

。我认为它是.m2存储库中的前一个库。然后，使用您的微服务模块再次尝试

mvn clean install

，我多次这样做。否luckCan您可以打开.m2的

commons new

jar并检查是否有所需的软件包吗？是的。这是正确的，你能试着从普通的新版本中删除SpringBoot插件吗？SpringBoot插件创建了一个更像ear或war的可运行jar。如果您解压缩spring引导jar，您将看到它与简单的library jar.Thx有何不同。我想是的

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project ybanq-auth-manager: Compilation failure: Compilation failure: 
[ERROR] /Users/sandeshaj/Documents/Bitbucket/lawshram-payments/ybanq-auth-manager/src/main/java/com/highpeak/tlp/ybanqauthmanager/controller/AuthController.java:[3,42] package com.highpeak.tlp.commons.exception does not exist
[ERROR] /Users/sandeshaj/Documents/Bitbucket/lawshram-payments/ybanq-auth-manager/src/main/java/com/highpeak/tlp/ybanqauthmanager/controller/AuthController.java:[4,37] package com.highpeak.tlp.commons.util does not exist
[ERROR] /Users/sandeshaj/Documents/Bitbucket/lawshram-payments/ybanq-auth-manager/src/main/java/com/highpeak/tlp/ybanqauthmanager/service/AuthManagerService.java:[3,42] package com.highpeak.tlp.commons.exception does not exist
[ERROR] /Users/sandeshaj/Documents/Bitbucket/lawshram-payments/ybanq-auth-manager/src/main/java/com/highpeak/tlp/ybanqauthmanager/service/AuthManagerService.java:[11,51] cannot find symbol
[ERROR]   symbol:   class DataException
[ERROR]   location: interface com.highpeak.tlp.ybanqauthmanager.service.AuthManagerService
[ERROR] /Users/sandeshaj/Documents/Bitbucket/lawshram-payments/ybanq-auth-manager/src/main/java/com/highpeak/tlp/ybanqauthmanager/service/AuthManagerServiceImpl.java:[19,42] package com.highpeak.tlp.commons.exception does not exist