Java工程中可执行JAR两种打包方式详解_Java

一、需求概述

普通java工程 docker-show 实现了定时打印docker应用信息，现在需要将其打包成可执行jar部署到服务器端运行。

打包方式分为2种：

一体化可执行包
带外部依赖lib的可执行包

二、代码结构

三、运行结果

此项目使用了线程池定时打印docker应用名，端口信息

四、打包设置

1. 一体化可执行包

pom文件中引入 maven-assembly-plugin插件，核心配置

			<!-- 方式一：带dependencies运行包 -->
			<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>
						<!--将所有外部依赖jar都加入生成的jar包-->
						<descriptorref>jar-with-dependencies</descriptorref>
					</descriptorrefs>
				</configuration>
				<executions>
					<execution><!-- 配置执行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 绑定到package阶段 -->
						<goals>
							<goal>single</goal><!-- 只运行一次 -->
						</goals>
					</execution>
				</executions>
			</plugin>

2. 带外部依赖lib的可执行包

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

			<!-- 方式二：外部依赖lib目录运行包 -->
			<!-- 将项目依赖包复制到<outputdirectory>指定的目录下 -->
			<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>
							<!-- 默认为test，包含所有依赖 -->
						</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、打包运行

1. 源码放送

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

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

或者使用下面的备份文件恢复成原始的项目代码

如何恢复，请移步查阅：

//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：带dependencies运行包 -->
			<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>
						<!--将所有外部依赖jar都加入生成的jar包-->
						<descriptorref>jar-with-dependencies</descriptorref>
					</descriptorrefs>
				</configuration>
				<executions>
					<execution><!-- 配置执行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 绑定到package阶段 -->
						<goals>
							<goal>single</goal><!-- 只运行一次 -->
						</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：外部依赖lib目录运行包 -->
			<!-- 将项目依赖包复制到<outputdirectory>指定的目录下 -->
			<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>
							<!-- 默认为test，包含所有依赖 -->
						</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：带dependencies运行包 -->
			<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>
						<!--将所有外部依赖jar都加入生成的jar包-->
						<descriptorref>jar-with-dependencies</descriptorref>
					</descriptorrefs>
				</configuration>
				<executions>
					<execution><!-- 配置执行器 -->
						<id>make-assembly</id>
						<phase>package</phase><!-- 绑定到package阶段 -->
						<goals>
							<goal>single</goal><!-- 只运行一次 -->
						</goals>
					</execution>
				</executions>
			</plugin>


			<!-- 方式二：外部依赖lib目录运行包 -->
			<!-- 将项目依赖包复制到<outputdirectory>指定的目录下 -->
			<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>
							<!-- 默认为test，包含所有依赖 -->
						</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 [类、类#方法、类#成员]
     */
    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;
    }
    
    /**
     * 获取docker相关信息
     * 
     * @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);
    }
    
    /**
     * 获取docker相关信息
     * 
     * @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
{
    /**
     * 线程池保证程序一直运行
     * 
     * @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. 打包执行

#完整打包
mvn clean package

#一体化可执行包
mvn clean package -f pom-deps.xml

#带外部依赖lib的可执行包
mvn clean package -f pom-lib.xml

3. 打包结果

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Java工程中可执行JAR两种打包方式详解

2024年05月15日 • Java •我要评论