这篇文章主要介绍了怎么使用MAVEN打JAR包的相关知识,内容详细易懂,操作简单快捷,具有一定借鉴价值,相信大家阅读完这篇怎么使用MAVEN打JAR包文章都会有所收获,下面我们一起来看看吧。
使用MAVEN打JAR包
一、简单的方法:
首先在pom.xml里面添加:
<build> <plugins> <plugin> <artifactId>maven-assembly-plugin</artifactId> <configuration> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> <archive> <manifest> <mainClass>com.qunar.piao.data.integration.Boot</mainClass> </manifest> <!-- 需要执行的main --> </archive> </configuration> </plugin> </plugins> </build>
然后执行:mvn assembly:assembly
最后执行:java -jar target/ticket-data-integration-0.0.1-SNAPSHOT-jar-with-dependencies.jar
二、执行任意main方法
两个类,Boot类:
package com.qunar.check.integration; public class Boot { public static void main(String[] args){ System.out.println("test xingxing"); } }
Boot2类:
package com.qunar.check.integration; public class Boot2 { public static void main(String[] args){ System.out.println("test liqiu"); } }
那么执行:
$ java -classpath target/check-jar-with-dependencies.jar com.qunar.check.integration.Boot2 test liqiu $ java -classpath target/check-jar-with-dependencies.jar com.qunar.check.integration.Boot test xingxing
两个main函数都可以执行
扩展:maven 使用assembly 进行打包
1. pom 中添加assembly 插件
要使用assembly 进项编译打包, 首先主要在pom 中的build中添加插件信息, 具体如图下所示:
<build> <finalName>${project.artifactId}</finalName> <sourceDirectory>src/main/java</sourceDirectory> <resources> <resource> <directory>src/main/resources</directory> <filtering>true</filtering> <includes> <include>**/*.xml</include> <include>**/*.properties</include> </includes> </resource> <resource> <directory>${profile.dir}</directory> <filtering>true</filtering> </resource> </resources> <plugins> <!-- compiler插件参数设置,指定编码 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>utf-8</encoding> </configuration> </plugin> <!-- 这个插件是关键 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assembly-plugin</artifactId> <configuration> <!-- 这个是assembly 所在位置 --> <descriptor>src/main/assembly/assembly.xml</descriptor> </configuration> <executions> <execution> <id>make-assembly</id> <phase>package</phase> <goals> <goal>single</goal> </goals> </execution> </executions> </plugin> </plugins> </build>
2. 创建assembly文件夹和assembly.xml文件
创建assembly文件夹和assembly.xml文件, 这个样子创建主要是规范。
在pom 中已经介绍assembly.xml 位置。
<!-- 这个是assembly 所在位置 --> <descriptor>src/main/assembly/assembly.xml</descriptor>
创建assembly.xml 文件后添加如下内容:
<assembly> <formats> <!--支持 zip,tar,tar.gz,tar.bz2,jar,dir,war 等 --> <format>tar.gz</format> <format>zip</format> <format>dir</format> </formats> <includeBaseDirectory>false</includeBaseDirectory> <fileSets> <fileSet> <directory>src/main/resources</directory> <outputDirectory>conf</outputDirectory> <fileMode>0644</fileMode> </fileSet> <fileSet> <directory>${profile.dir}</directory> <outputDirectory>conf</outputDirectory> <!-- 表示的是包含下面格式的资源文件 --> <includes> <include>*.xml</include> <include>*.properties</include> <include>**/*.xml</include> <include>**/*.properties</include> </includes> <fileMode>0644</fileMode> </fileSet> <fileSet> <directory>src/main/assembly/bin</directory> <outputDirectory>bin</outputDirectory> <fileMode>0755</fileMode> </fileSet> </fileSets> <dependencySets> <dependencySet> <outputDirectory>lib</outputDirectory> </dependencySet> </dependencySets> </assembly>
fileMode 官方解释:
Similar to a UNIX permission, sets the file mode of the files included. THIS IS AN OCTAL VALUE. Format: (User)(Group)(Other) where each component is a sum of Read = 4, Write = 2, and Execute = 1. For example, the value 0644 translates to User read-write, Group and Other
上述的三个fileSet 分别是将resource 下的资源打包到config 目录下, 将assembly下的bin 启动相关脚本打包到bin 目录下, 将maven项目依赖的所有jar 包, 打包到lib 中。
具体结构如下图所示: