打包jar包时无法吧依赖打进jar包中问题处理

客官°小女子只卖身不卖艺 2022-12-08 05:44 342阅读 0赞

最近在修改一个小工具，原来的做法是把依赖包都下载到本地目录，打包时候使用fatjar打包整个项目依赖；现在修改为maven管理依赖包，使用maven-assembly-plugin插件打包；如果依赖包全部是远程默认的依赖配置，这样没有问题；但里面有些是自己实现的本地依赖，这个时候打包就有问题了；因为本地依赖包scope配置为system，而默认的配置为runtime，所以本地依赖包没有打进去

处理方案：使用自定义配置替代maven-assembly-plugin的默认配置

默认配置：

<plugin>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <configuration>
                        <archive>
                            <manifest>
                                <mainClass>主程序入口方法</mainClass>
                            </manifest>
                            <manifestEntries>
                                <Class-Path>.</Class-Path>
                            </manifestEntries>
                        </archive>
                        <descriptorRefs>
                            <descriptorRef>jar-with-dependencies</descriptorRef>
                        </descriptorRefs>
                    </configuration>
                    <executions>
                        <execution>
                            <id>make-assembly</id>
                            <phase>package</phase>
                            <goals>
                                <goal>single</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>

增加assembly.xml 文件配置如下：

<assembly>
        <id>jar-with-dependencies</id>
        <formats>
            <format>jar</format>
        </formats>
        <includeBaseDirectory>false</includeBaseDirectory>
        <dependencySets>
            
            <dependencySet>
                <outputDirectory>/</outputDirectory>
                <useProjectArtifact>true</useProjectArtifact>
                <unpack>true</unpack>
                <scope>runtime</scope>
            </dependencySet>
            
            <dependencySet>
                <outputDirectory>/</outputDirectory>
                <useProjectArtifact>true</useProjectArtifact>
                <unpack>true</unpack>
                <scope>system</scope>
            </dependencySet>
        </dependencySets>
    </assembly>

可以看到，主要增加了scope类型为system的配置；这样在打包的时候，就会把本地jar也打包进去

当然默认的配置也是可以使用的，这个时候可以把本地依赖上传到maven仓库；然后将dependency中路径和scope配置去掉；这样就可以使用默认配置进行打包，可以实现以上同样效果

完整build:

<build>
            <sourceDirectory>src</sourceDirectory>
            <resources>
                <resource>
                    <filtering>true</filtering>
                    <directory>src/resources</directory>
                    <includes>
                        <include>*.*</include>
                    </includes>
                </resource>
            </resources>
     
            <plugins>
                <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>
                <plugin>
                    <artifactId>maven-assembly-plugin</artifactId>
                    <configuration>
                        <archive>
                            <manifest>
                                <mainClass>com.quan.simple.IncFrame</mainClass>
                            </manifest>
                            <manifestEntries>
                                <Class-Path>.</Class-Path>
                            </manifestEntries>
                        </archive>
                        
                    </configuration>
                    <executions>
                        <execution>
                            <id>make-assembly</id>
                            <phase>package</phase>
                            <goals>
                                <goal>single</goal>
                            </goals>
                            <configuration>
                                <descriptors>
                                    <descriptor>src/assembly/assembly.xml</descriptor>
                                </descriptors>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
     
            </plugins>
        </build>

原文：https://blog.csdn.net/w\_quan/article/details/83306213