使用maven创建可执行的jar。
插件:maven-shade-plugin,它可以让用户配置Main-Class的值,然后在打包的时候将值填入/META-INF/MANIFEST.MF文件。关于项目的依赖,它很聪明地将依赖JAR文件全部解压后,再将得到的.class文件连同当前项目的.class文件一起合并到最终的CLI包中,这样,在执行CLI JAR文件的时候,所有需要的类就都在Classpath中了。
maven-shade-plugin 插件的地址: http://maven.apache.org/plugins/maven-shade-plugin/
Executable JAR的例子: http://maven.apache.org/plugins/maven-shade-plugin/examples/executable-jar.html
例子的XML:
To create an executable uber JAR, one simply needs to set the main class that serves as the application entry point:
<project> ... <build> <!-- 指定最终package的jar的名称 --> <finalName>mysql-backup</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.2</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass>org.sonatype.haven.HavenCli</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> ... </project>
This snippet configures a special resource transformer which sets the Main-Class entry in the MANIFEST.MF of the shaded JAR. Other entries can be added to the MANIFEST.MF as well via key-value pairs in the <manifestEntries> section:
<project> ... <build> <!-- 指定最终package的jar的名称 --> <finalName>mysql-backup</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.2</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <manifestEntries> <Main-Class>org.sonatype.haven.ExodusCli</Main-Class> <Build-Number>123</Build-Number> </manifestEntries> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> ... </project>