SpringBoot 增量部署发布（第2版）

一、背景介绍

书接上一篇《SpringBoot 增量部署发布_springboot增量部署-CSDN博客》，上一篇内容实现了将静态资源与jar分离，但是即使是打包成**-exec.jar，解压jar文件，可以看到里面包含了static，resource目录，整个jar文件还是偏大，有没有办法彻底分离静态资源和jar呢，这篇文章就是解决这个问题的。

二、解决办法

还是修改项目pom.xml文件的build节点。

1.打包完整包

这跟springboot默认的打包方式一致，将整个程序打包成一个jar，可以根据实际情况看是否使用，有，可以不用。

<!--0.完整包：这个是springboot的默认编译插件，他默认会把所有的文件打包成一个jar-->
<plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><executions><execution><goals><goal>repackage</goal></goals></execution></executions><configuration><!--程序入口类 --><mainClass>com.rc114.web.BlogApplication</mainClass><addResources>true</addResources><outputDirectory>${project.build.directory}/jar-one-package</outputDirectory></configuration>
</plugin>

2.打包jar，生成项目对应的jar

此步是将web项目打包成jar，但是不包含static，templates目录。

<!--分离包：步骤1.打包jar，生成项目对应的jar，如：rc_web_rb-0.0.1.jar -->
<plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-jar-plugin</artifactId><configuration><!-- 不打包资源文件（配置文件和依赖包分开） --><excludes><exclude>*.yml</exclude><exclude>*.properties</exclude><exclude>mybatis/**</exclude><exclude>mapper/**</exclude><exclude>static/**</exclude><exclude>templates/**</exclude></excludes><archive><manifest><addClasspath>true</addClasspath><!-- MANIFEST.MF 中 Class-Path 加入前缀 --><classpathPrefix>lib/</classpathPrefix><!-- jar包不包含唯一版本标识 --><useUniqueVersions>false</useUniqueVersions><!--程序入口类 --><mainClass>com.rc114.web.BlogApplication</mainClass></manifest><manifestEntries><!--MANIFEST.MF 中 Class-Path 加入资源文件目录 --><Class-Path>./resources/</Class-Path></manifestEntries></archive><outputDirectory>${project.build.directory}</outputDirectory></configuration>
</plugin>

注意：

1.mainClass 需要根据你实际情况进行修改。

2.excludes 排除了不必要的文件夹，所以打包出来的jar会比较小。

3.打包lib，将引用jar放到lib文件夹

<!--分离包：步骤2：打包lib：该插件的作用是用于复制依赖的jar包到指定的文件夹里 -->
<plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><executions><execution><id>copy-dependencies</id><phase>package</phase><goals><goal>copy-dependencies</goal></goals><configuration><outputDirectory>${project.build.directory}/lib/</outputDirectory><overWriteReleases>false</overWriteReleases><overWriteSnapshots>false</overWriteSnapshots><overWriteIfNewer>true</overWriteIfNewer></configuration></execution></executions>
</plugin>

4.打包resource，将resources目录复制到target目录

<!--分离包：步骤3.复制文件：该插件的作用是用于复制指定的文件(将resources目录复制到target目录) -->
<plugin><artifactId>maven-resources-plugin</artifactId><executions><execution><!-- 复制配置文件 --><id>copy-resources</id><phase>package</phase><goals><goal>copy-resources</goal></goals><configuration><resources><resource><directory>src/main/resources</directory><includes><include>*.yml</include><include>*.properties</include><include>mybatis/**</include><include>logback/**</include><include>mapper/**</include><include>static/**</include><include>templates/**</include></includes></resource></resources><outputDirectory>${project.build.directory}/resources</outputDirectory></configuration></execution></executions>
</plugin>

5.清理非必要目录

在target目录下，还会生成classes,generated-sources,maven-archiver,maven-status等目录，这些目录在真正部署时，往往是不需要的，可以在打包完成后排除掉。通过maven-antrun-plugin插件即可排除指定的目录。

<!--打包完成后，移除非必要目录（根据实际情况进行配置）-->
<plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-antrun-plugin</artifactId><version>3.0.0</version><executions><execution><phase>package</phase><goals><goal>run</goal></goals><configuration><target><delete dir="${project.build.directory}/antrun" /><delete dir="${project.build.directory}/classes" /><delete dir="${project.build.directory}/generated-sources" /><delete dir="${project.build.directory}/maven-archiver" /><delete dir="${project.build.directory}/maven-status" /></target></configuration></execution></executions>
</plugin>

三、完整的配置

<build><plugins><!--0.完整包：这个是springboot的默认编译插件，他默认会把所有的文件打包成一个jar--><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><executions><execution><goals><goal>repackage</goal></goals></execution></executions><configuration><!--程序入口类 --><mainClass>com.rc114.web.BlogApplication</mainClass><addResources>true</addResources><outputDirectory>${project.build.directory}/jar-one-package</outputDirectory></configuration></plugin><!--分离包：步骤1.打包jar，生成项目对应的jar，如：rc_web_rb-0.0.1.jar --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-jar-plugin</artifactId><configuration><!-- 不打包资源文件（配置文件和依赖包分开） --><excludes><exclude>*.yml</exclude><exclude>*.properties</exclude><exclude>mybatis/**</exclude><exclude>mapper/**</exclude><exclude>static/**</exclude><exclude>templates/**</exclude></excludes><archive><manifest><addClasspath>true</addClasspath><!-- MANIFEST.MF 中 Class-Path 加入前缀 --><classpathPrefix>lib/</classpathPrefix><!-- jar包不包含唯一版本标识 --><useUniqueVersions>false</useUniqueVersions><!--程序入口类 --><mainClass>com.rc114.web.BlogApplication</mainClass></manifest><manifestEntries><!--MANIFEST.MF 中 Class-Path 加入资源文件目录 --><Class-Path>./resources/</Class-Path></manifestEntries></archive><outputDirectory>${project.build.directory}</outputDirectory></configuration></plugin><!--分离包：步骤2：打包lib：该插件的作用是用于复制依赖的jar包到指定的文件夹里 --><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-dependency-plugin</artifactId><executions><execution><id>copy-dependencies</id><phase>package</phase><goals><goal>copy-dependencies</goal></goals><configuration><outputDirectory>${project.build.directory}/lib/</outputDirectory><overWriteReleases>false</overWriteReleases><overWriteSnapshots>false</overWriteSnapshots><overWriteIfNewer>true</overWriteIfNewer></configuration></execution></executions></plugin><!--分离包：步骤3.复制文件：该插件的作用是用于复制指定的文件(将resources目录复制到target目录) --><plugin><artifactId>maven-resources-plugin</artifactId><executions><execution><!-- 复制配置文件 --><id>copy-resources</id><phase>package</phase><goals><goal>copy-resources</goal></goals><configuration><resources><resource><directory>src/main/resources</directory><includes><include>*.yml</include><include>*.properties</include><include>mybatis/**</include><include>logback/**</include><include>mapper/**</include><include>static/**</include><include>templates/**</include></includes></resource></resources><outputDirectory>${project.build.directory}/resources</outputDirectory></configuration></execution></executions></plugin></plugins>
</build>

最终打包输出的target目录结构：