springmvc項目 maven建構可執行的jar包，打jar包，設定運作的主方法，包括依賴包

<plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy</id>
                        <phase>install</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <!--直接将所有依賴一起打包-->
           <plugin>  
            <groupId>org.apache.maven.plugins</groupId>  
            <artifactId>maven-assembly-plugin</artifactId>  
            <version>2.5.5</version>  
            <configuration>  
                <archive>  
                    <manifest>  
                    	<！--這裡是項目主類運作入口-->
                        <mainClass>com.ds.tool.DownloadGUI</mainClass>  
                    </manifest>  
                </archive>  
                <descriptorRefs>  
                <!--打包字尾名稱-->
                    <descriptorRef>jar-with-dependencies</descriptorRef>  
                </descriptorRefs>  
            </configuration>  
        </plugin>  
        </plugins>
           

運作mvn assembly:assembly 開始打包