SpringCloud maven-assembly-plugin 多级目录打包

1、spring-boot-maven-plugin

springboot默认打包工具为spring-boot-maven-plugin

pom配置：

<plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><mainClass>com.gsafety.bg.enterprise.EnterpriseApplication</mainClass><layout>ZIP</layout><!-- 打增量包时需要includes部分， 要打全量包删除includes --><includes><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-controller</artifactId></include><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-service</artifactId></include><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-dao</artifactId></include></includes></configuration><executions><execution><goals><goal>repackage</goal></goals></execution></executions>
</plugin>

打包后的目录结构：

BOOT-INF内包含目录：lib（enterprise-service-1.0.0.jar、enterprise-dao-1.0.0.jar、enterprise-controller-1.0.0.jar）、classes、classpath.idx

2、maven-assembly-plugin

maven-assembly-plugin 插件的主要作用是允许用户将项目输出与它的依赖项、模块、站点文档、和其他文件一起组装成一个可分发的归档文件，简单的说，就是自定义打包的工具，有自己的配置文件（Assembly描述符文件）。微服务使用这个插件的概率比较高，平时普通的项目不需要这样的实现方式。

pom配置：

<plugin><artifactId>maven-assembly-plugin</artifactId><version>2.4.1</version><configuration><finalName>enterprise</finalName><encoding>utf-8</encoding><descriptors><descriptor>src/main/assembly/assembly.xml</descriptor></descriptors></configuration><executions><execution><id>make-assembly</id><phase>package</phase><goals><goal>single</goal></goals></execution></executions>
</plugin>

assembly.xml

全部可设置节点可参考官网：http://maven.apache.org/plugins/maven-assembly-plugin/assembly.html

<assembly><id>1.0</id><formats><format>tar.gz</format></formats><includeBaseDirectory>true</includeBaseDirectory><!--    项目所需lib包--><!--    <dependencySets>--><!--        &lt;!&ndash;把依赖都打包进libs文件夹&ndash;&gt;--><!--        <dependencySet>--><!--            <useProjectArtifact>true</useProjectArtifact>--><!--            <outputDirectory>libs</outputDirectory>--><!--            <scope>runtime</scope>--><!--        </dependencySet>--><!--    </dependencySets>--><fileSets><!--打包启动文件到deploy目录--><fileSet><!--需要打包的文件所在目录 即start.sh--><directory>src/main/assembly/bin</directory><!--要打包到的地址--><outputDirectory>deploy</outputDirectory><!--linux权限--><fileMode>0755</fileMode></fileSet><!--打包可执行jar到application-server目录--><fileSet><directory>target</directory><outputDirectory>application-server</outputDirectory><includes><include>*.jar</include></includes></fileSet><!--打包src/main/resources到logs/enterprise目录--><fileSet><directory>src/main/resources</directory><outputDirectory>logs/enterprise</outputDirectory><fileMode>0755</fileMode><!--打包不包含src/main/resources所有文件，即生成logs/enterprise空目录--><excludes><exclude>**/*</exclude></excludes></fileSet></fileSets>
</assembly>

打包后的目录结构：

查看application-server文件夹内可执行文件解压目录：

发现与spring-boot-maven-plugin打包后的目录不一致，明显缺少lib内的三个jar和其他一些文件

3、maven-assembly-plugin打包后的可执行文件缺失lib问题

修改pom文件：

<build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><configuration><mainClass>com.gsafety.bg.enterprise.EnterpriseApplication</mainClass><layout>ZIP</layout><!-- 打增量包时需要includes部分， 要打全量包删除includes --><includes><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-controller</artifactId></include><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-service</artifactId></include><include><groupId>com.gsafety.bg</groupId><artifactId>enterprise-dao</artifactId></include></includes></configuration><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin><!-- 生成项目依赖到lib本地，并设置需要排除的jar--><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><executions><execution><id>copy-dependencies</id><phase>prepare-package</phase><goals><goal>copy-dependencies</goal></goals><configuration><outputDirectory>../../../lib</outputDirectory><!-- 需要排除的jar的 groupId --><excludeArtifactIds>enterprise-controller,enterprise-service,enterprise-dao</excludeArtifactIds></configuration></execution></executions></plugin><plugin><artifactId>maven-assembly-plugin</artifactId><version>2.4.1</version><configuration><finalName>enterprise</finalName><encoding>utf-8</encoding><descriptors><descriptor>src/main/assembly/assembly.xml</descriptor></descriptors></configuration><executions><execution><id>make-assembly</id><phase>package</phase><goals><goal>single</goal></goals></execution></executions></plugin></plugins>
</build>

即plugins先引用spring-boot-maven-plugin 后引用maven-assembly-plugin，这样spring-boot-maven-plugin会将enterprise-service-1.0.0.jar、enterprise-dao-1.0.0.jar、enterprise-controller-1.0.0.jar三个jar打包到lib中，打包后maven-assembly-plugin就会将其打包进enterprise-1.0.tar.gz。

这样enterprise-1.0.tar.gz内就包含了启动文件（deploy）、可执行文件（application-server/enterprise-main-1.0.0.jar）、日志目录（logs/enterprise）,符合目前项目部署的目录结构。