问题描述

SpringBoot项目本地运行正常，Maven打包报错：Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.9.RELEASE:repackage failed

[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.9.RELEASE:repackage (default) on project SpringCloudUserFeign: Execution default of goal org.springframework.boot:spring-boot-maven-plugin:1.5.9.RELEASE:repackage failed: Unable to find main class -> [Help 1]

[ERROR] 

[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.

[ERROR] Re-run Maven using the -X switch to enable full debug logging.

[ERROR] 

[ERROR] For more information about the errors and possible solutions, please read the following articles:

ERROR http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException

Process finished with exit code 1

原因分析：

原因是添加该插件后编译打包时会自动寻找项目中的启动类，如果某个模块没有启动类或者有多个main启动类就会报错，通过保证模块启动类main启动类入口唯一也可以解决。

解决方案：

      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <configuration>
          <!-- spring boot启动类的路径 -->
          <mainClass>com.test.ApplicationMain</executable>
        </configuration>
        <executions>
          <execution>
            <goals>
                <goal>repackage</goal>
            </goals>
          </execution>
        </executions>
      </plugin>