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Java工程中可執(zhí)行JAR兩種打包方式詳解

 更新時(shí)間：2024年04月03日 11:23:50   作者：愛碼少年  
這篇文章主要為大家詳細(xì)介紹了Java工程中可執(zhí)行JAR兩種打包方式,一體化可執(zhí)行包和帶外部依賴lib的可執(zhí)行包,有需要的小伙伴可以學(xué)習(xí)一下

一、需求概述

普通Java工程 docker-show 實(shí)現(xiàn)了定時(shí)打印docker應(yīng)用信息，現(xiàn)在需要將其打包成可執(zhí)行Jar部署到服務(wù)器端運(yùn)行。

打包方式分為2種：

  • 一體化可執(zhí)行包
  • 帶外部依賴lib的可執(zhí)行包

二、代碼結(jié)構(gòu)

三、運(yùn)行結(jié)果

此項(xiàng)目使用了線程池定時(shí)打印docker應(yīng)用名，端口信息

四、打包設(shè)置

1. 一體化可執(zhí)行包

pom文件中引入 maven-assembly-plugin插件，核心配置

			<!-- 方式一：帶dependencies運(yùn)行包 -->
			<plugin>
				<artifactId>maven-assembly-plugin</artifactId>
				<version>3.5.0</version>
				<configuration>
					<appendAssemblyId>false</appendAssemblyId>
					<archive>
						<manifest>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
					</archive>
					<descriptorRefs>
						<!--將所有外部依賴JAR都加入生成的JAR包-->
						<descriptorRef>jar-with-dependencies</descriptorRef>
					</descriptorRefs>
				</configuration>
				<executions>
					<execution><!-- 配置執(zhí)行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 綁定到package階段 -->
						<goals>
							<goal>single</goal><!-- 只運(yùn)行一次 -->
						</goals>
					</execution>
				</executions>
			</plugin>

2. 帶外部依賴lib的可執(zhí)行包

pom文件中引入 maven-dependency-plugin、maven-jar-plugin插件，核心配置

			<!-- 方式二：外部依賴lib目錄運(yùn)行包 -->
			<!-- 將項(xiàng)目依賴包復(fù)制到<outputDirectory>指定的目錄下 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-dependency-plugin</artifactId>
				<version>3.1.2</version>
				<executions>
					<execution>
						<id>copy-dependencies</id>
						<phase>package</phase>
						<goals>
							<goal>copy-dependencies</goal>
						</goals>
						<configuration>
							<outputDirectory>${project.build.directory}/lib</outputDirectory>
							<excludeArtifactIds>lombok</excludeArtifactIds>
							<includeScope>runtime</includeScope>
							<!-- 默認(rèn)為test，包含所有依賴 -->
						</configuration>
					</execution>
				</executions>
			</plugin>

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-jar-plugin</artifactId>
				<version>3.2.0</version>
				<configuration>
					<archive>
						<manifest>
							<addClasspath>true</addClasspath>
							<classpathPrefix>lib</classpathPrefix>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
						<manifestEntries>
							<Class-Path>./</Class-Path>
						</manifestEntries>
					</archive>
				</configuration>
			</plugin>

五、打包運(yùn)行

1. 源碼放送

https://gitcode.com/00fly/demo

git clone https://gitcode.com/00fly/demo.git

或者使用下面的備份文件恢復(fù)成原始的項(xiàng)目代碼

如何恢復(fù)，請(qǐng)移步查閱：神奇代碼恢復(fù)工具

//goto pom-deps.xml
<?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>com.fly</groupId>
	<artifactId>docker-show</artifactId>
	<version>0.0.1</version>
	<name>java-depend</name>
	<url>http://maven.apache.org</url>
	<packaging>jar</packaging>

	<properties>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.apache.logging.log4j</groupId>
			<artifactId>log4j-slf4j-impl</artifactId>
			<version>2.12.1</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.5</version>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.12</version>
			<scope>provided</scope>
		</dependency>
	</dependencies>
	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.8.1</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>

			<!-- 方式一：帶dependencies運(yùn)行包 -->
			<plugin>
				<artifactId>maven-assembly-plugin</artifactId>
				<version>3.5.0</version>
				<configuration>
					<appendAssemblyId>false</appendAssemblyId>
					<archive>
						<manifest>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
					</archive>
					<descriptorRefs>
						<!--將所有外部依賴JAR都加入生成的JAR包-->
						<descriptorRef>jar-with-dependencies</descriptorRef>
					</descriptorRefs>
				</configuration>
				<executions>
					<execution><!-- 配置執(zhí)行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 綁定到package階段 -->
						<goals>
							<goal>single</goal><!-- 只運(yùn)行一次 -->
						</goals>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>
</project>
//goto pom-lib.xml
<?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>com.fly</groupId>
	<artifactId>docker-show</artifactId>
	<version>0.0.1</version>
	<name>java-depend</name>
	<url>http://maven.apache.org</url>
	<packaging>jar</packaging>

	<properties>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.apache.logging.log4j</groupId>
			<artifactId>log4j-slf4j-impl</artifactId>
			<version>2.12.1</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.5</version>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.12</version>
			<scope>provided</scope>
		</dependency>
	</dependencies>
	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.8.1</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>
			
			<!-- 方式二：外部依賴lib目錄運(yùn)行包 -->
			<!-- 將項(xiàng)目依賴包復(fù)制到<outputDirectory>指定的目錄下 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-dependency-plugin</artifactId>
				<version>3.1.2</version>
				<executions>
					<execution>
						<id>copy-dependencies</id>
						<phase>package</phase>
						<goals>
							<goal>copy-dependencies</goal>
						</goals>
						<configuration>
							<outputDirectory>${project.build.directory}/lib</outputDirectory>
							<excludeArtifactIds>lombok</excludeArtifactIds>
							<includeScope>runtime</includeScope>
							<!-- 默認(rèn)為test，包含所有依賴 -->
						</configuration>
					</execution>
				</executions>
			</plugin>

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-jar-plugin</artifactId>
				<version>3.2.0</version>
				<configuration>
					<archive>
						<manifest>
							<addClasspath>true</addClasspath>
							<classpathPrefix>lib</classpathPrefix>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
						<manifestEntries>
							<Class-Path>./</Class-Path>
						</manifestEntries>
					</archive>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>
//goto pom.xml
<?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>com.fly</groupId>
	<artifactId>docker-show</artifactId>
	<version>0.0.1</version>
	<name>java-depend</name>
	<url>http://maven.apache.org</url>
	<packaging>jar</packaging>

	<properties>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<java.version>1.8</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.apache.logging.log4j</groupId>
			<artifactId>log4j-slf4j-impl</artifactId>
			<version>2.12.1</version>
		</dependency>
		<dependency>
			<groupId>org.apache.commons</groupId>
			<artifactId>commons-lang3</artifactId>
			<version>3.5</version>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.18.12</version>
			<scope>provided</scope>
		</dependency>
	</dependencies>
	<build>
		<finalName>${project.artifactId}</finalName>
		<plugins>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>3.8.1</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
				</configuration>
			</plugin>

			<!-- 方式一：帶dependencies運(yùn)行包 -->
			<plugin>
				<artifactId>maven-assembly-plugin</artifactId>
				<version>3.5.0</version>
				<configuration>
					<appendAssemblyId>true</appendAssemblyId>
					<archive>
						<manifest>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
					</archive>
					<descriptorRefs>
						<!--將所有外部依賴JAR都加入生成的JAR包-->
						<descriptorRef>jar-with-dependencies</descriptorRef>
					</descriptorRefs>
				</configuration>
				<executions>
					<execution><!-- 配置執(zhí)行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 綁定到package階段 -->
						<goals>
							<goal>single</goal><!-- 只運(yùn)行一次 -->
						</goals>
					</execution>
				</executions>
			</plugin>


			<!-- 方式二：外部依賴lib目錄運(yùn)行包 -->
			<!-- 將項(xiàng)目依賴包復(fù)制到<outputDirectory>指定的目錄下 -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-dependency-plugin</artifactId>
				<version>3.1.2</version>
				<executions>
					<execution>
						<id>copy-dependencies</id>
						<phase>package</phase>
						<goals>
							<goal>copy-dependencies</goal>
						</goals>
						<configuration>
							<outputDirectory>${project.build.directory}/lib</outputDirectory>
							<excludeArtifactIds>lombok</excludeArtifactIds>
							<includeScope>runtime</includeScope>
							<!-- 默認(rèn)為test，包含所有依賴 -->
						</configuration>
					</execution>
				</executions>
			</plugin>

			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-jar-plugin</artifactId>
				<version>3.2.0</version>
				<configuration>
					<archive>
						<manifest>
							<addClasspath>true</addClasspath>
							<classpathPrefix>lib</classpathPrefix>
							<mainClass>com.fly.simple.MainRun</mainClass>
						</manifest>
						<manifestEntries>
							<Class-Path>./</Class-Path>
						</manifestEntries>
					</archive>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>
//goto src\main\java\com\fly\simple\Executor.java
package com.fly.simple;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.SystemUtils;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class Executor
{
    private static String DOCKER_PS_CMD = "docker ps --format \"{{.Names}} {{.Ports}}\"";
    
    /**
     * execute命令
     * 
     * @param command
     * @throws IOException
     * @see [類、類#方法、類#成員]
     */
    public static List<String> execute(String command)
        throws IOException
    {
        List<String> resultList = new ArrayList<>();
        String[] cmd = SystemUtils.IS_OS_WINDOWS ? new String[] {"cmd", "/c", command} : new String[] {"/bin/sh", "-c", command};
        Process ps = Runtime.getRuntime().exec(cmd);
        try (InputStream in = ps.getInputStream(); BufferedReader br = new BufferedReader(new InputStreamReader(in)))
        {
            String line;
            while ((line = br.readLine()) != null)
            {
                resultList.add(line);
            }
        }
        return resultList;
    }
    
    /**
     * 獲取docker相關(guān)信息
     * 
     * @throws IOException
     */
    @Deprecated
    public static void printPorts1()
        throws IOException
    {
        Map<String, Set<String>> map = new TreeMap<>();
        for (String line : execute(DOCKER_PS_CMD))
        {
            log.info("{}", line);
            String name = StringUtils.substringBefore(line, " ");
            Set<String> ports =
                Stream.of(StringUtils.substringAfter(line, " ").split(",")).map(p -> StringUtils.substringBetween(p, ":", "->")).filter(StringUtils::isNotBlank).map(p -> p.replace(":", "")).sorted().collect(Collectors.toSet());
            map.put(name, ports);
        }
        log.info("######## {}", map);
    }
    
    /**
     * 獲取docker相關(guān)信息
     * 
     * @throws IOException
     */
    public static void printPorts()
        throws IOException
    {
        Map<String, Set<String>> map = new TreeMap<>();
        execute(DOCKER_PS_CMD).stream()
            .map(line -> Collections.singletonMap(StringUtils.substringBefore(line, " "),
                Stream.of(StringUtils.substringAfter(line, " ").split(",")).map(p -> StringUtils.substringBetween(p, ":", "->")).filter(StringUtils::isNotBlank).map(p -> p.replace(":", "")).sorted().collect(Collectors.toSet())))
            .forEach(it -> map.putAll(it));
        log.info("######## {}", map);
    }
}
//goto src\main\java\com\fly\simple\MainRun.java
package com.fly.simple;

import java.io.IOException;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class MainRun
{
    /**
     * 線程池保證程序一直運(yùn)行
     * 
     * @param args
     */
    public static void main(String[] args)
    {
        ScheduledExecutorService service = new ScheduledThreadPoolExecutor(1);
        service.scheduleAtFixedRate(() -> {
            try
            {
                Executor.printPorts();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
        }, 2, 10, TimeUnit.SECONDS);
    }
}
//goto src\main\resources\log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<configuration status="off" monitorInterval="0">
	<appenders>
		<console name="Console" target="system_out">
			<patternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n" />
		</console>
	</appenders>
	<loggers>
		<root level="INFO">
			<appender-ref ref="Console" />
		</root>
	</loggers>
</configuration>

2. 打包執(zhí)行

#完整打包
mvn clean package

#一體化可執(zhí)行包
mvn clean package -f pom-deps.xml

#帶外部依賴lib的可執(zhí)行包
mvn clean package -f pom-lib.xml

3. 打包結(jié)果

到此這篇關(guān)于Java工程中可執(zhí)行JAR兩種打包方式詳解的文章就介紹到這了,更多相關(guān)Java打包可執(zhí)行JAR內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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