本文主要是介绍spring-boot-maven-plugin多模块install问题，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
一、问题描述：
项目分多个模块，open-eureka注册中心、open-provider服务提供者、open-common公共部分，provider依赖common。父pom使用spring-boot-maver-plugin插件，项目直接运行Main主类没问题，但是install报common中的类找不到符号.
二、查找问题：
spring-boot-maven-plugin 打包跟普通的apache-maven-plugin打包不一致，前者打的jar 包是可以直接用java -jar name.jar 来执行的，但是common模块只是作为一个其他模块的依赖来使用，并不需要有启动类，也不需要执行。
三、解决办法：
3.1、删除父pom中的spring-boot-maven-plugin插件依赖，父pom不需要<build>
parent.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 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.starfast.open</groupId><artifactId>starfast-open</artifactId><version>0.0.1-SNAPSHOT</version><modules><module>open-eureka</module><module>open-provider</module><module>open-feign</module><module>open-common</module></modules><packaging>pom</packaging><name>starfast-open</name><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.4.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target><spring-cloud.version>Greenwich.RELEASE</spring-cloud.version><witown.open.version>1.0-SNAPSHOT</witown.open.version><open.common.version>0.0.1-SNAPSHOT</open.common.version></properties><dependencies><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-core</artifactId><version>1.2.3</version></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.2.3</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.16.18</version></dependency></dependencies><dependencyManagement><!--引入spring-cloud依赖--><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency><dependency><groupId>com.witown.app</groupId><artifactId>open-sdk</artifactId><version>${witown.open.version}</version></dependency><dependency><groupId>com.starfast.open</groupId><artifactId>open-common</artifactId><version>${open.common.version}</version></dependency></dependencies></dependencyManagement></project>3.2、只在需要独立运行的模块，如provider模块中加载spring-boot-maven-plugin插件依赖
provider.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 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>starfast-open</artifactId><groupId>com.starfast.open</groupId><version>0.0.1-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>open-provider</artifactId><name>open-provider</name><dependencies><!--common模块--><dependency><groupId>com.starfast.open</groupId><artifactId>open-common</artifactId></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>3.3、删除不需要独立运行的模块中的spring-boot-maven-plugin插件依赖
common.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 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><artifactId>starfast-open</artifactId><groupId>com.starfast.open</groupId><version>0.0.1-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>open-common</artifactId><packaging>jar</packaging><name>open-common</name><dependencies><!--web--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!--eureka client--><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><!--redis--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><!--开放平台--><dependency><groupId>com.witown.app</groupId><artifactId>open-sdk</artifactId></dependency><!--监控--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><!--单元测试--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency></dependencies></project>install结果：
ps：实际操作中，我原来项目就是在parent中定义了build，并且在所依赖的本项目中的jar包中使用了build
1.去掉parent中的build
2.去掉所依赖的本项目中的模块pom中的build部分（也解决了不需要发布的jar包，而只是被别的项目依赖的jar包，还需要写main入口程序的无用代码）
3.在需要发布的项目模块中，添加build，并且格式为
<build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><!--fork : 如果没有该项配置devtools不会起作用，即应用不会restart --><fork>true</fork><addResources>true</addResources><!--支持静态文件热部署 --></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-deploy-plugin</artifactId><configuration><skip>true</skip></configuration></plugin></plugins><resources><resource><directory>src/main/webapp</directory></resource><resource><directory>src/main/resources</directory></resource><resource><directory>src/main/java</directory><includes><include>**/*.xml</include></includes></resource></resources></build>4.注意要把资源文件也用build打包
还好发现了该篇文章，
https://blog.csdn.net/SnailMann/article/details/81710461
多谢作者。
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