一、用maven-shade-plugin打包
在pom.xml文件中加入如下信息，利用Maven的maven-shade-plugin插件进行打包。
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<!-- 程序主入口 -->
<mainClass>net.test.HelloWorld</mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.handlers</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.schemas</resource>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
其中<mainClass>net.test.HelloWorld</mainClass>标签中配置的是项目程序的主入口，加入插件信息后的最终pom.xml文件如下：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>testDemo</groupId>
<artifactId>HelloWorld</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>
<name>HelloWorld</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.4</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<!-- 程序主入口 -->
<mainClass>net.test.HelloWorld</mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.handlers</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/spring.schemas</resource>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.googlecode.log4jdbc</groupId>
<artifactId>log4jdbc</artifactId>
<version>1.2</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.microsoft.sqlserver</groupId>
<artifactId>sqljdbc4</artifactId>
<version>4.0</version>
</dependency>
<dependency>
<groupId>oracle</groupId>
<artifactId>ojdbc7</artifactId>
<version>12.1.0.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.39</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.7</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.20.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.20.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>javax.transaction-api</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.0.1</version>
</dependency>
</dependencies>
</project>
然后就可以执行以下Maven命令进行打包了：
mvn clean compile //清除之前target编译文件并重新编译 mvn clean package //对项目进行打包(因为配置过插件，所以jar包是可执行的) mvn clean install //安装项目，然后就可以使用了
也可以使用IDEA自带的maven管理工具代替执行上面的命令，如下图所示，依次点击蓝色的部分即可打包成功：
测试：
打好包后，找到jar包位置，在jar包所在文件夹空白处 Shift + 右击——在此处打开命令窗口，通过 java -jar 包名.jar 命令即可运行，如下图所示：
即将Maven项目打包为cmd可执行jar成功！
二、用maven-assembly-plugin打包
在pom.xml文件中加入如下信息，利用Maven的maven-assembly-plugin插件进行打包。
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.4</version>
<configuration>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
<archive>
<manifest>
<mainClass>net.test.HelloWorld</mainClass>
</manifest>
</archive>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
其中<mainClass>net.test.HelloWorld</mainClass>标签中配置的是项目程序的主入口，然后就可以执行以下Maven命令进行打包了：
mvn assembly:assembly
也可以使用IDEA自带的maven管理工具代替执行上面的命令：
测试如上！！！
注：
成功后的jar包中META-INF 目录中的 MANIFEST.MF，内容如下（下列属性冒号后有一空格）：
Manifest-Version: 1.0 Archiver-Version: Plexus Archiver Built-By: BigBoss Created-By: Apache Maven 3.3.9 Build-Jdk: 1.8.0_131 Main-Class: net.test.HelloWorld
创建bat命令文件运行打好的可执行jar包方法：https://www.cnblogs.com/Big-Boss/p/11328723.html