使用了自定义的模块的Maven项目打包报错找不到jar包

问题：将一个使用了别的模块的项目使用maven进行打包的时候，会直接找不到引用模块的包

解决办法请看下述：

下面是我的项目的架构

xc-framework-parent是我的父工程，其他的所有模块都是基于它构建

xc-framework-parent的pom文件内容

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.1.RELEASE</version>
    </parent>
    <groupId>com.xuecheng</groupId>
    <artifactId>xc-framework-parent</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>../xc-service-manage-cms</module>
        <module>../xc-framework-common</module>
        <module>../xc-framework-model</module>
        <module>../xc-framework-utils</module>
        <module>../xc-service-api</module>
    </modules>
    <properties>
        <java.version>1.8</java.version>
        <tomcat.version>8.5.28</tomcat.version>
        <spring-boot.version>2.0.1.RELEASE</spring-boot.version>
        <springframework.version>5.0.5.RELEASE</springframework.version>
        <mybatis-spring-boot.version>1.3.1</mybatis-spring-boot.version>
        <mybatis.version>3.4.5</mybatis.version>
        <druid.version>1.1.6</druid.version>
        <mysql-connector-java.version>5.1.45</mysql-connector-java.version>


        <commons-io.version>2.6</commons-io.version>
        <org.apache.commons.io.version>1.3.2</org.apache.commons.io.version>
        <commons-fileupload.version>1.3.3</commons-fileupload.version>
        <commons-codec.version>1.10</commons-codec.version>
        <commons-lang3.version>3.6</commons-lang3.version>
        <okhttp.version>3.9.1</okhttp.version>
        <feign-okhttp.version>8.18.0</feign-okhttp.version>
        <lombok.version>1.16.16</lombok.version>
        <springfox-swagger.version>2.7.0</springfox-swagger.version>
        <fastjson.version>1.2.30</fastjson.version>
        <fastdfs-client-java.version>1.27.0.0</fastdfs-client-java.version>
        <mysql-connector-java.version>5.1.40</mysql-connector-java.version>
        <elasticsearch.version>6.2.1</elasticsearch.version>
        <guava.version>24.0-jre</guava.version>
    </properties>
    <!--test-->
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>${mysql-connector-java.version}</version>
            </dependency>
            <dependency>
                <groupId>org.mybatis.spring.boot</groupId>
                <artifactId>mybatis-spring-boot-starter</artifactId>
                <version>${mybatis-spring-boot.version}</version>
            </dependency>
            <dependency>
                <groupId>com.github.pagehelper</groupId>
                <artifactId>pagehelper-spring-boot-starter</artifactId>
                <version>1.2.4</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
                <version>${druid.version}</version>
            </dependency>

            <dependency>
                <groupId>com.squareup.okhttp3</groupId>
                <artifactId>okhttp</artifactId>
                <version>${okhttp.version}</version>
            </dependency>
            <dependency>
                <groupId>com.netflix.feign</groupId>
                <artifactId>feign-okhttp</artifactId>
                <version>${feign-okhttp.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${commons-io.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-io</artifactId>
                <version>${org.apache.commons.io.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>${commons-fileupload.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
                <version>${commons-codec.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.commons</groupId>
                <artifactId>commons-lang3</artifactId>
                <version>${commons-lang3.version}</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${lombok.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger2</artifactId>
                <version>${springfox-swagger.version}</version>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-swagger-ui</artifactId>
                <version>${springfox-swagger.version}</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>${fastjson.version}</version>
            </dependency>
            <dependency>
                <groupId>net.oschina.zcx7878</groupId>
                <artifactId>fastdfs-client-java</artifactId>
                <version>${fastdfs-client-java.version}</version>
            </dependency>

            <dependency>
                <groupId>org.elasticsearch.client</groupId>
                <artifactId>elasticsearch-rest-high-level-client</artifactId>
                <version>${elasticsearch.version}</version>
            </dependency>
            <!-- https://mvnrepository.com/artifact/org.elasticsearch/elasticsearch -->
            <dependency>
                <groupId>org.elasticsearch</groupId>
                <artifactId>elasticsearch</artifactId>
                <version>${elasticsearch.version}</version>
            </dependency>
            <dependency>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
                <version>${guava.version}</version>
            </dependency>

        </dependencies>
    </dependencyManagement>
    <build>
        <finalName>${project.artifactId}</finalName>
        <plugins>
           <!-- &lt;!&ndash; 资源文件拷贝插件 &ndash;&gt;
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <configuration>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>-->
            <!-- java编译插件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

在原有的基础所添加的内容为：

<modules>
    <module>../xc-service-manage-cms</module>
    <module>../xc-framework-common</module>
    <module>../xc-framework-model</module>
    <module>../xc-framework-utils</module>
    <module>../xc-service-api</module>
</modules>

common工程的pom文件内容：

<?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">
    <parent>
        <artifactId>xc-framework-parent</artifactId>
        <groupId>com.xuecheng</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../xc-framework-parent/pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>xc-framework-common</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <phase>none</phase>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

model、api、utils工程和common工程配置相似，这里就不写上来了。

都是在原有的基础上添加了：

<packaging>jar</packaging>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <executions>
                <execution>
                    <phase>none</phase>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

 这样就可以通过maven，将项目打包在本地仓库里，cms模块在打包的时候就不会报错

这是我将model、common、api、utils模块打包进maven本地仓库的内容

然后在打包cms模块，因为cms模块的pom将之前的四个模块的依赖都有引用，如果不将上面的四个模块进行maven打包到本地从仓库的话，cms模块是没有办法进行打包的，会报错

这是cms的pom文件的内容：

<?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">
    <parent>
        <artifactId>xc-framework-parent</artifactId>
        <groupId>com.xuecheng</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../xc-framework-parent/pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>xc-service-manage-cms</artifactId>
    <packaging>jar</packaging>
    <dependencies>
        <!-- 导入Eureka客户端的依赖 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xc-service-api</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xc-framework-model</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xc-framework-utils</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.xuecheng</groupId>
            <artifactId>xc-framework-common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-freemarker</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-amqp</artifactId>
        </dependency>
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-oauth2</artifactId>
        </dependency>
    </dependencies>
    <build>
        <finalName>${project.artifactId}-${project.version}</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.21.0</version>
                <configuration>
                    <skipTests>true</skipTests>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

 然后使用maven进行打包就不会报错了

打好的包就在cms工程的target目录下

cmd进入target目录下运行：

java -jar xc-service-manage-cms-1.0-SNAPSHOT.jar

这样就可以直接访问cms模块。

参考资料：

http://www.codebelief.com/article/2017/10/maven-best-practice-to-manage-multi-module-project/

https://blog.csdn.net/u011781521/article/details/74868680

https://blog.csdn.net/qq_33547169/article/details/78866859