1.背景
客户环境并没有某些三方依赖，无法实现docker化部署
1.1 方案一
将那几个依赖的本地仓库，复制到docker打包的机器，让package时从本地仓库引入
可行，之前临时解决方案，缺点就是，客户调整服务器，需要再次将本地仓库复制到对应服务器上
1.2 本地引入
// java可以通过<systemPath>${basedir}/lib/combined-lib.jar</systemPath>
<dependency>
<groupId>tech.ty</groupId>
<artifactId>pdi</artifactId>
<version>1.0</version>
<scope>system</scope>
<systemPath>${basedir}/lib/combined-lib.jar</systemPath>
</dependency>
将包放置项目的lib目录下,但是打包并没有将对应的lib/*.jar 打包到 BOOT-INF/lib 下面，需要增加plugin
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>3.2.0</version>
<executions>
<execution>
<id>copy-local-jar-to-target</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-resources</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/classes/BOOT-INF/lib/</outputDirectory>
<resources>
<resource>
<directory>${project.basedir}/lib</directory>
<includes>
<include>*.jar</include>
</includes>
</resource>
</resources>
</configuration>
</execution>
</executions>
</plugin>
2.整合成一个依赖
由于我引入的第三方包是一个pom，内部间接引入了其他依赖
<dependency>
<groupId>pentaho-kettle</groupId>
<artifactId>kettle-core</artifactId>
<version>${kettle.version}</version>
</dependency>
<dependency>
<groupId>pentaho-kettle</groupId>
<artifactId>kettle-engine</artifactId>
<version>${kettle.version}</version>
</dependency>
2.1 shade
通过shade可以将所有lib打包成一个jar
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.SR2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>pentaho-kettle</groupId>
<artifactId>kettle-core</artifactId>
<version>${kettle.version}</version>
<exclusions>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
</exclusion>
<exclusion>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>pentaho-kettle</groupId>
<artifactId>kettle-engine</artifactId>
<version>${kettle.version}</version>
<exclusions>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
</exclusion>
<exclusion>
<groupId>org.codehaus.groovy</groupId>
<artifactId>groovy-all</artifactId>
</exclusion>
<exclusion>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<shadedArtifactAttached>false</shadedArtifactAttached>
<shadedArtifactClassifier>shaded</shadedArtifactClassifier>
<outputFile>${project.build.directory}/combined-lib.jar</outputFile>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
我之所以要排除exclusion，通过maven依赖存在远近先后顺序问题，
还有版本冲突，不同包会出现目录项目 类名项目，这个就需要自己控制依赖顺序问题
否则报错classnotfound
还有就是我们目前这两个依赖打包的成jar过大，100多M,当前的springboot版本启动会报错，及需要分析内部包，先排除，然后再从本项目自己引入，
自此，项目运行正常，中间会遇到很多问题，需要自己细心依依排查，程序员不易~
3.gradle扩展
gradle项目更简单，可以通过批量导入，maven找了很多博客并未发现，本项目那两个内部依赖100+,显然一个个引入不现实，建议其他的小伙伴，慢慢从maven转成gradle，gradle功能更强大
implementation fileTree('dir': 'lib', include: ['*.jar'])
