maven · 2020-09-17 0

maven打jar包并引入依赖包(使用assembly和dependency插件)

一、把依赖打进jar包

1.pom修改

使用 maven-assembly-plugin 插件，指定在 package 阶段(运行 mvn package)，会执行 maven-assembly-plugin:single

<?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.example</groupId>
    <artifactId>package-test</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.9.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                    <archive>
                        <manifest>
                            <mainClass>com.example.Main</mainClass>
                        </manifest>
                    </archive>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

2.结果

会在 target 目录下生成文件名包含 jar-with-dependencies 的 jar 文件

解压生成的jar文件中：包含依赖解压出class文件

zxm@zxm-pc:~/IdeaProjects/package-test$ jar ftv target/package-test-1.0-SNAPSHOT-jar-with-dependencies.jar
     0 Sat Mar 02 13:01:46 CST 2024 META-INF/
   153 Sat Mar 02 13:01:44 CST 2024 META-INF/MANIFEST.MF
     0 Sat Mar 02 13:01:44 CST 2024 com/
     0 Sat Mar 02 13:01:44 CST 2024 com/example/
     0 Sat Mar 02 13:01:44 CST 2024 resources.txt
   261 Sat Mar 02 13:01:44 CST 2024 com/example/Main.class
     0 Wed Jan 22 15:10:16 CST 2020 org/
     0 Wed Jan 22 15:10:16 CST 2020 org/apache/
     0 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/
     0 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/
     0 Wed Jan 22 15:10:16 CST 2020 META-INF/maven/
     0 Wed Jan 22 15:10:16 CST 2020 META-INF/maven/org.apache.commons/
     0 Wed Jan 22 15:10:16 CST 2020 META-INF/maven/org.apache.commons/commons-csv/
 11358 Wed Jan 22 15:10:16 CST 2020 META-INF/LICENSE.txt
   173 Wed Jan 22 15:10:16 CST 2020 META-INF/NOTICE.txt
   870 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVFormat$1.class
  9817 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVFormat$Builder.class
  2338 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVFormat$Predefined.class
 29587 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVFormat.class
   916 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVParser$1.class
  2128 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVParser$CSVRecordIterator.class
   852 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVParser$Headers.class
 11519 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVParser.class
  5228 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVPrinter.class
  6926 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/CSVRecord.class
  1224 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/Constants.class
  2699 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/ExtendedBufferedReader.class
  1665 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/IOUtils.class
  7483 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/Lexer.class
  1177 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/QuoteMode.class
  1244 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/Token$Type.class
  1074 Wed Jan 22 15:10:16 CST 2020 org/apache/commons/csv/Token.class
 20575 Wed Jan 22 15:10:16 CST 2020 META-INF/maven/org.apache.commons/commons-csv/pom.xml
    64 Wed Jan 22 15:10:16 CST 2020 META-INF/maven/org.apache.commons/commons-csv/pom.properties

MANIFEST.MF的内容

zxm@zxm-pc:~/IdeaProjects/package-test$ ls
pom.xml  src  target
zxm@zxm-pc:~/IdeaProjects/package-test$ jar vxf target/package-test-1.0-SNAPSHOT-jar-with-dependencies.jar META-INF/MANIFEST.MF
  已解压: META-INF/MANIFEST.MF
zxm@zxm-pc:~/IdeaProjects/package-test$ ls
META-INF  pom.xml  src  target
zxm@zxm-pc:~/IdeaProjects/package-test$ cat META-INF/MANIFEST.MF 
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: zxm
Build-Jdk: 1.8.0_341
Main-Class: com.example.Main

二、依赖包和项目分离

1.pom修改

使用 maven-dependency-plugin 插件，指定在package阶段(运行 mvn package)，会执行 maven-dependency-plugin:copy-dependencies

maven-dependency-plugin:copy-dependencies 拷贝依赖包到指定目录

将jar包和lib文件夹放同一个目录，jar包就可以使用lib下的依赖包

<?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.example</groupId>
    <artifactId>package-test</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-csv</artifactId>
            <version>1.9.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-jar-plugin</artifactId>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <!-- 主方法所在类名 -->
                            <mainClass>com.example.Main</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>

            <!-- 将依赖包放到lib文件夹中 -->
            <plugin>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>
                                ${project.build.directory}/lib
                            </outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

2.结果

target目录下生成文件名包含的jar文件，和lib文件夹(依赖文件)

zxm@zxm-pc:~/IdeaProjects/package-test$ jar ftv target/package-test-1.0-SNAPSHOT.jar 
     0 Sat Mar 02 13:18:50 CST 2024 META-INF/
   198 Sat Mar 02 13:18:48 CST 2024 META-INF/MANIFEST.MF
     0 Sat Mar 02 13:18:48 CST 2024 com/
     0 Sat Mar 02 13:18:48 CST 2024 com/example/
     0 Sat Mar 02 13:18:48 CST 2024 resources.txt
   261 Sat Mar 02 13:18:48 CST 2024 com/example/Main.class
     0 Sat Mar 02 13:18:50 CST 2024 META-INF/maven/
     0 Sat Mar 02 13:18:50 CST 2024 META-INF/maven/com.example/
     0 Sat Mar 02 13:18:50 CST 2024 META-INF/maven/com.example/package-test/
  2223 Sat Mar 02 13:18:28 CST 2024 META-INF/maven/com.example/package-test/pom.xml
   115 Sat Mar 02 13:18:50 CST 2024 META-INF/maven/com.example/package-test/pom.properties

MANIFEST.MF的内容

zxm@zxm-pc:~/IdeaProjects/package-test$ ls
pom.xml  src  target
zxm@zxm-pc:~/IdeaProjects/package-test$ jar vxf target/package-test-1.0-SNAPSHOT.jar META-INF/MANIFEST.MF
  已解压: META-INF/MANIFEST.MF
zxm@zxm-pc:~/IdeaProjects/package-test$ ls
META-INF  pom.xml  src  target
zxm@zxm-pc:~/IdeaProjects/package-test$ cat META-INF/MANIFEST.MF
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Built-By: zxm
Class-Path: lib/commons-csv-1.9.0.jar
Created-By: Apache Maven 3.8.6
Build-Jdk: 1.8.0_341
Main-Class: com.example.Main

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