no main manifest attribute, in /root/xxx.jar

叁歲伎倆 2022-04-23 06:34 153阅读 0赞

记一次开发事故：  
背景：spring-boot项目，①父工程pom如下：

<parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
     <version>1.5.9.RELEASE</version>
    </parent>

②maven plugin插件配置

<plugin>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-maven-plugin</artifactId>
    </plugin>

由于某些原因改为依赖jar的方式，如下：

<dependencyManagement>
     <dependencies>
      <dependency>
       
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-dependencies</artifactId>
       <version>1.5.9.RELEASE</version>
       <type>pom</type>
       <scope>import</scope>
      </dependency>
      <dependency>
       <groupId>org.springframework.cloud</groupId>
       <artifactId>spring-cloud-dependencies</artifactId>
       <version>Edgware.RELEASE</version>
       <type>pom</type>
       <scope>import</scope>
      </dependency>
     </dependencies>
    </dependencyManagement>

结果Jenkins编辑没问题，r启动就报错了no main manifest attribute, in /root/xxx.jar

经过排查，发现mvn打包后的jar只有100K+,完全是不正确的，由此想到肯定打包处理问题，重新设置maven plugin，如下：

<plugin>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-maven-plugin</artifactId>
    	<executions>
    		<execution>
    			<goals>
    				<goal>repackage</goal>
    			</goals>
    		</execution>
    	</executions>
    	<configuration>
    		<includeSystemScope>true</includeSystemScope>
    		<mainClass>${startup.main}</mainClass>
    	</configuration>
    </plugin>

此时再进行打包发现jar正常，启动也正常了；