环境：若依前后端分离版本，原打包时将所有的依赖jar包放至ruoyi-admin.jar 包中，该包130MB，过大。

需求：为了减少打包更新上传的时间，减少至1.1mb

1、将不常更新的模块jar包分离至lib文件夹

2、将常更新的模块如common、system等打包至jar包中。

在ruoyi-admin的pom文件中添加如下：

            <!--先去除所有的jar包-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <layout>ZIP</layout>
                    <includeSystemScope>true</includeSystemScope>
                    <includes>
                        <include>
                            <groupId>nothing</groupId>
                            <artifactId>nothing</artifactId>
                        </include>

                        <!--将需要的JAR包保留，如：项目中的 common、framework、system 等更新频繁的模块-->
                        <include>
                            <groupId>com.ruoyi</groupId>
                            <artifactId>ruoyi-common</artifactId>
                        </include>
                        <include>
                            <groupId>com.ruoyi</groupId>
                            <artifactId>ruoyi-framework</artifactId>
                        </include>
                        <include>
                            <groupId>com.ruoyi</groupId>
                            <artifactId>ruoyi-system</artifactId>
                        </include>
                        <include>
                            <groupId>com.ruoyi</groupId>
                            <artifactId>ruoyi-quartz</artifactId>
                        </include>
                        <include>
                            <groupId>com.ruoyi</groupId>
                            <artifactId>ruoyi-generator</artifactId>
                        </include>
                    </includes>
                </configuration>
            </plugin>

            <!-- 打包jar文件时，配置manifest文件，加入lib包的jar依赖 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>${java.run.main.class}</mainClass>
                            <useUniqueVersions>false</useUniqueVersions>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

            <!-- 分离lib, 拷贝依赖到lib目录 -->
            <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>

                            <!-- 依赖包输出目录，将来不打进jar包里 ，将更新不频繁的模块放进lib -->
                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
                            <excludeTransitive>false</excludeTransitive>
                            <stripVersion>false</stripVersion>
                            <includeScope>runtime</includeScope>
                            <!-- 排除如下jar包，将更新频繁的模块不放进lib，放进jar包 -->
                            <excludeArtifactIds>
                                ruoyi-common,ruoyi-framework,ruoyi-system,ruoyi-quartz,ruoyi-generator
                            </excludeArtifactIds>
                        </configuration>

                    </execution>
                </executions>
            </plugin>

运行时会遇到一个问题：验证码无法显示

Caused by: java.lang.ClassNotFoundException: com.ruoyi.common.config.kaptcha.KaptchaTextCreator

at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)

at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)

at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)

at java.base/java.lang.Class.forName0(Native Method)

at java.base/java.lang.Class.forName(Class.java:315)

at com.google.code.kaptcha.util.ConfigHelper.getClassInstance(ConfigHelper.java:112)

解决方案是重新编译原google 的kaptcha源码，改动一下红框标示之处

便于我使用,我直接将这个类 KaptchaTextCreator 放在了 common中,所以 

// properties.setProperty(KAPTCHA_TEXTPRODUCER_IMPL, "com.google.code.kaptcha.text.impl.KaptchaTextCreator");
properties.setProperty(KAPTCHA_TEXTPRODUCER_IMPL, "com.ruoyi.common.config.kaptcha.KaptchaTextCreator");  

这个包也可以用我修改的,如上. 版本号 1.1.1