This article introduces the method of using maven to generate executable jar packages. It is shared with you. The details are as follows:
From the xsi of pom, you can open the schema describing pom:
You can see the structure of the project in the pom:
The jar generated by the default mvn install does not have the main class entry, and the main class needs to be set in maven-compile-plugin.
<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.cetc.di</groupId> <artifactId>hellocetc</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>hellocetc</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <build><pluginManagement><plugins><plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-jar-plugin</artifactId> <configuration> <source>1.8</source> <target>1.8</target> <archive> <manifest> <mainClass>com.cetc.di.hellocetc.App</mainClass> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> </archive> <classesDirectory> </classesDirectory> </configuration></plugin></plugins> </pluginManagement></build> </project>
Execute mvn install:
In the target directory, it is found that the jar package has been generated:
Using java decompiler, you can see that MainClass has been added to the manifest:
Use mvn help:effective-pom to see the complete structure of pom.xml (including inherited properties):
[INFO] Scanning for projects...[INFO] [INFO] -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- applied:<!-- ========================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================= =============================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================================== ============================================================================= --><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.cetc.di</groupId> <artifactId>hellocetc</artifactId> <version>0.0.1-SNAPSHOT</version> <name>hellocetc</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> </dependencies> <repositories> <repository> <snapshots> <enabled>false</enabled> </snapshots> <id>central</id> <name>Central Repository</name> <url>https://repo.maven.apache.org/maven2</url> </repository> </repository> </repository> </repository> <pluginRepository> <pluginRepository> <releases> <updatePolicy>never</updatePolicy> </releases> <snapshots> <enabled>false</enabled> </snapshots> <id>central</id> <name>Central Repository</name> <url>https://repo.maven.apache.org/maven2</url> </pluginRepository> </pluginRepository> <build> <sourceDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/src/main/java</sourceDirectory> <scriptSourceDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/src/main/scripts</scriptSourceDirectory> <testSourceDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/src/test/java</testSourceDirectory> <outputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/classes</outputDirectory> <testOutputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/test-classes</testOutputDirectory> <resources> <resource> <directory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/src/main/resources</directory> </resources> </resources> <testResources> <testResources> <directory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/src/test/resources</directory> </testResources> </testResources> <directory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target</directory> <finalName>hellocetc-0.0.1-SNAPSHOT</finalName> <pluginManagement> <plugins> <artifactId>maven-antrun-plugin</artifactId> <version>1.3</version> </plugin> <plugin> <artifactId>maven-assembly-plugin</artifactId> <version>2.2-beta-5</version> </plugin> <plugin> <artifactId>maven-dependency-plugin</artifactId> <version>2.8</version> </plugin> <plugin> <artifactId>maven-release-plugin</artifactId> <version>2.3.2</version> </plugin> <plugin> <artifactId>maven-jar-plugin</artifactId> <version>2.4</version> <configuration> <source>1.8</source> <target>1.8</target> <archive> <manifest> <mainClass>com.cetc.di.hellocetc.App</mainClass> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> </archive> <classesDirectory /> </configuration> </plugin> </plugins> </plugins> </pluginManagement> <plugins> <artifactId>maven-clean-plugin</artifactId> <version>2.5</version> <executions> <execution> <id>default-clean</id> <phase>clean</phase> <goals> <goal>clean</goal> </goals> </execution> </executions> </plugin> <plugin> <artifactId>maven-resources-plugin</artifactId> <version>2.6</version> <executions> <execution> <id>default-testResources</id> <phase>process-test-resources</phase> <goals> <goal>testResources</goal> </goals> </execution> <execution> <id>default-resources</id> </goals> </execution> <execution> <id>default-resources</id> <phase>process-resources</phase> <goals> <goal>resources</goal> </execution> </plugin> <plugin> <artifactId>maven-jar-plugin</artifactId> <version>2.4</version> <executions> <execution> <id>default-jar</id> <phase>package</phase> <goals> <goal>jar</goal> </goals> <configuration> <source>1.8</source> <target>1.8</target> <archive> <manifest> <mainClass>com.cetc.di.hellocetc.App</mainClass> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> </archive> <classesDirectory /> </configuration> </execution> </executions> <configuration> <source>1.8</source> <target>1.8</target> <archive> <manifest> <mainClass>com.cetc.di.hellocetc.App</mainClass> <addClasspath>true</addClasspath> <classpathPrefix>lib/</classpathPrefix> </manifest> </archive> <classesDirectory /> </configuration> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <executions> <execution> <id>default-compile</id> <phase>compile</phase> <goals> <goal>compile</goal> </goals> </execution> <execution> <id>default-testCompile</id> <phase>test-compile</phase> <goals> <goal>testCompile</goal> </goals> </execution> </execution> </plugin> <plugin> <artifactId>maven-surefire-plugin</artifactId> <version>2.12.4</version> <executions> <execution> <execution> <id>default-test</id> <phase>test</phase> <goals> <goal>test</goal> </goals> </execution> </executions> </plugin> <plugin> <artifactId>maven-install-plugin</artifactId> <version>2.4</version> <executions> <execution> <id>default-install</id> <phase>install</phase> <goals> <goal>install</goal> </goals> </execution> </executions> </plugin> <plugin> <artifactId>maven-deploy-plugin</artifactId> <version>2.7</version> <executions> <execution> <id>default-deploy</id> <phase>deploy</phase> <goals> <goal>deploy</goal> </goals> </execution> </executions> </plugin> <plugin> <artifactId>maven-site-plugin</artifactId> <version>3.3</version> <executions> <execution> <id>default-site</id> <phase>site</phase> <goals> <goal>site</goal> </goals> <configuration> <outputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/site</outputDirectory> <reportPlugins> <reportPlugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-project-info-reports-plugin</artifactId> </reportPlugin> </reportPlugins> </reportPlugins> </configuration> </execution> <execution> <id>default-deploy</id> <phase>site-deploy</phase> <goals> <goal>deploy</goal> </goals> <configuration> <outputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/site</outputDirectory> <reportPlugins> <reportPlugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-project-info-reports-plugin</artifactId> </reportPlugin> </reportPlugins> </reportPlugins> </configuration> </execution> </executions> <configuration> <outputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/site</outputDirectory> <reportPlugins> <reportPlugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-project-info-reports-plugin</artifactId> </reportPlugin> </reportPlugins> </configuration> </plugin> </plugins> </build> <reporting> <outputDirectory>D:/Users/a/Workspaces/MyEclipse 2015/hellocetc/target/site</outputDirectory> </reporting></project>[INFO] ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 2015-11-18T20:05:12+08:00[INFO] Final Memory: 10M/245M[INFO] -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
The above is all the content of this article. I hope it will be helpful to everyone's learning and I hope everyone will support Wulin.com more.