参考文章:
Maven生成可以直接运行的jar包的多种方式(http://blog.csdn.net/xiao__gui/article/details/47341385)
一般,我们通过
> mvn package
打出来的jar包,不可运行,缺少清单(META-INF/MANIFEST.MF Main-Class)
> java -jar ****.jar
1.插件 maven-assembly-plugin
<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assembly-plugin</artifactId> <version>2.5.5</version> <configuration> <archive> <manifest> <mainClass>server.jetty.StartJetty</mainClass> </manifest> </archive> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> </configuration> </plugin> </plugins> </build>
命令行:
>mvn package assembly:single
如果希望在打包时仅仅输入mvn package则:
在configuration后面添加:
<executions> <execution> <id>make-assembly</id> <phase>package</phase> <goals> <goal>single</goal> </goals> </execution> </executions>
Spring Framework的项目,这种方式打包会出错,可采用下一种。
2.插件 maven-shade-plugin
<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>2.4.1</version> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass>com.xxg.Main</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build>
>mvn package
这时就可以看到在target下生成了两个jar,运行不带 original的那个jar文件即可。
如果项目中用到了Spring Framework,将依赖打到一个jar包中,运行时会出现读取XML schema文件出错。原因是Spring Framework的多个jar包中包含相同的文件spring.handlers和spring.schemas,如果生成一个jar包会互相覆盖。为了避免互相影响,可以使用AppendingTransformer来对文件内容追加合并
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/spring.handlers</resource> </transformer> <transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer"> <resource>META-INF/spring.schemas</resource> </transformer>
3. 插件SpringBoot-maven-plugin
<plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>1.5.3.RELEASE</version> <configuration> <mainClass>com.xx.**.MyApplication</mainClass> <!--有多个springboot注解启动时需要指定 -->
<layout>JAR</layout> <!-- JAR ZIP WAR -->
<skip>true</skip> <!-- 打包时是否跳过测试 --> </configuration> <executions> <execution> <goals> <goal>repackage</goal> <!--会打一份 mvn package 的原有包 *.origin,然后再打一份springboot的jar包--> </goals> </execution> </executions> </plugin>
启动Class选择也可在<properties>中添加:
<properties> <start-class>com.xx..MyApplication</start-class>
</properties>