Java打包jar运行时分离lib和jar

pom.xml中修改build节点,packaging应为jar

<packaging>jar</packaging>

<build>
        <finalName>PackageName</finalName>
        <plugins>
            <!-- 分离lib -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.3</version>
                <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 -->
                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
                            <excludeTransitive>false</excludeTransitive>
                            <stripVersion>false</stripVersion>
                            <includeScope>runtime</includeScope>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <!-- copy资源文件 -->
            <plugin>
                <artifactId>maven-resources-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy-resources</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-resources</goal>
                        </goals>
                        <configuration>
                            <resources>
                                <resource>
                                    <directory>src/main/resources</directory>
                                </resource>
                            </resources>
                            <outputDirectory>${project.build.directory}/resources</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <!-- 打jar包时忽略配置文件 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>2.3.1</version>
                <configuration>
                    <excludes>
                        <exclude>**/*.yml</exclude>
                        <exclude>**/*.xml</exclude>
                        <exclude>**/*.properties</exclude>
                        <exclude>**/*.txt</exclude>
                    </excludes>
                </configuration>
            </plugin>
            <!-- spring boot repackage -->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${springboot.version}</version>
                <configuration>
                    <layout>ZIP</layout>
                    <includes>
                        <include>
                            <groupId>non-exists</groupId>
                            <artifactId>non-exists</artifactId>
                        </include>
                    </includes>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

        </plugins>

    </build>

运行时：

java -jar -Dloader.path=lib,resources  PackageName.jar

-Dloader.path=lib,resources 指的是启动时默认加载lib和resources两个文件夹。

lib提取出外部：这样做的好处就是lib升级时可不用修改程序及重新打包，只替换jar即可；
resources提出外部：方便修改页面及js、css等文件