Java工程成使用MAVEN打包JAR程序

普通Java工程使用的是Maven管理，如何将程序打包成JAR程序，直接运行呢？

• 配置文件独立于JAR程序
• 公共引用libs独立于JAR程序

 

以下配置文件最终结果：全部配置文件放在cfg目录下, 所有的引用类库放在libs目录下, 编译后的可执行JAR程序 imessage.jar 放在根目录下, 运行命令 java -jar imessage.jar

<build>
	<finalName>imessage</finalName>
	<sourceDirectory>src/main/java</sourceDirectory>
	
	<resources>
		<!-- 资源配置文件 -->
		<resource>
			<directory>src/main/resources</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<targetPath>${project.build.directory}/cfg</targetPath>
		</resource>
	</resources>
	
	<plugins>

		<!-- 编译版本 -->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-compiler-plugin</artifactId>
			<version>3.8.0</version>
			<configuration>
				<source>1.8</source>
				<target>1.8</target>
				<encoding>UTF-8</encoding>
			</configuration>
		</plugin>

		<!-- 打包配置 -->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-jar-plugin</artifactId>
			<version>3.1.0</version>
			<configuration>
				<archive>
					<manifest>
						<mainClass>com.dhcc.imessage.App</mainClass>
						<addClasspath>true</addClasspath>
						<classpathPrefix>libs/</classpathPrefix>
					</manifest>
					<!-- 配置文件外置 -->
					<manifestEntries>
						<Class-Path>cfg/</Class-Path>
					</manifestEntries>
				</archive>
			</configuration>
		</plugin>

		<!-- 拷贝依赖的jar包到libs目录 -->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-dependency-plugin</artifactId>
			<version>3.1.1</version>
			<executions>
				<execution>
					<id>copy</id>
					<phase>package</phase>
					<goals>
						<goal>copy-dependencies</goal>
					</goals>
					<configuration>
						<outputDirectory>
							${project.build.directory}/libs
						</outputDirectory>
					</configuration>
				</execution>
			</executions>
		</plugin>

		<!-- 解决资源文件的编码问题 -->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-resources-plugin</artifactId>
			<version>3.1.0</version>
			<configuration>
				<encoding>UTF-8</encoding>
			</configuration>
		</plugin>

		<!-- 打包source文件为jar文件 -->
		<plugin>
			<groupId>org.apache.maven.plugins</groupId>
			<artifactId>maven-source-plugin</artifactId>
			<version>3.0.1</version>
			<configuration>
				<attach>true</attach>
				<encoding>UTF-8</encoding>
			</configuration>
			<executions>
				<execution>
					<phase>compile</phase>
					<goals>
						<goal>jar</goal>
					</goals>
				</execution>
			</executions>
		</plugin>

	</plugins>
</build>

在使用IDE开发测试的时候，把这段注释掉<targetPath>${project.build.directory}/cfg</targetPath>