Maven打包成jar包，携带依赖jar与非maven仓库jar包的操作

1.当需要携带maven仓库依赖包的情况：在pom.xml 使用如下，其中com.it.Preview.App为自己的主类，之后 run as --> maven install即可

  <build>
         <plugins>
              <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>9</source> <!-- jdk版本 -->
                    <target>9</target>
                    <encoding>UTF-8</encoding>
                </configuration>
              </plugin>
              
              <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.it.Preview.App</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>

              
         </plugins>
    
    </build>

2.也要携带第三方jar包也就是maven仓库没有该jar的情况：

首先新建一个assembly.xml且在其中添加以下：

<?xml version="1.0" encoding="UTF-8"?>
<assembly>
    <id>jar-with-dependencies</id>
    <formats>
        <format>jar</format>
    </formats>
    <includeBaseDirectory>false</includeBaseDirectory>
    <dependencySets>
        <!-- 默认的配置 -->
        <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>

其次再度在pom.xml中进行修改：之后再度使用 maven install即可

 <build>
         <plugins>
              <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.3</version>
                <configuration>
                    <source>9</source> <!-- jdk版本 -->
                    <target>9</target>
                    <encoding>UTF-8</encoding>
                </configuration>
              </plugin>
              
              <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <mainClass>com.it.Preview.App</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>
                        <configuration>
                           <descriptors>  <!-- 注意这里 -->
                              <descriptor>assembly.xml</descriptor>
                           </descriptors>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

              
         </plugins>
    
    </build>

3.一些常见操作：

在pom.xml中引入第三方jar包：

首先在项目中新建一个lib包，将相关的第三方jar复制到lib中，之后使用如下：

         <!-- 引入lib的jar包 -->
         <dependency>
               <groupId>ok</groupId>  <!-- 随便写 -->
               <artifactId>ok</artifactId>< !-- 随便写 -->
               <version>2.2.2</version> <!-- 和版本保持一致即可 -->
               <scope>system</scope>    <!-- project.basedir自己会赋值，不必理会 -->
               <systemPath>${project.basedir}/lib/xxxxx.jar</systemPath>
         </dependency>