.jar中没有主清单属性
问题：xxx.jar中没有主清单属性
背景：maven项目，springboot服务
IDEA打包，jar包运行出现上述错误
解决方案：
pom.xml 中添加
org.springframework.boot
spring-boot-maven-plugin
/pre>
p>完美解决。
/p>
h3>看下原因：
/h3>
pre class='language-javascript'>
Manifest-Version: 1.0
Implementation-Title: websocket-client
Implementation-Version: 1.0.0.1
Built-By: Administrator
Implementation-Vendor-Id: com.xue.study
Created-By: Apache Maven 3.5.2
Build-Jdk: 1.8.0_144
Implementation-URL: https://projects.spring.io/spring-boot/#/spring-bo
ot-starter-parent/websocket-client/pre>
p>----
/p>
pre class='language-javascript'>
Manifest-Version: 1.0
Implementation-Title: websocket-client
Implementation-Version: 1.0.0.2
Built-By: Administrator
Implementation-Vendor-Id: com.xue.study
Spring-Boot-Version: 2.1.4.RELEASE
Main-Class: org.springframework.boot.loader.JarLauncher
Start-Class: com.xue.study.WebsocketClientDemo
Spring-Boot-Classes: BOOT-INF/classes/
Spring-Boot-Lib: BOOT-INF/lib/
Created-By: Apache Maven 3.5.2
Build-Jdk: 1.8.0_144
Implementation-URL: https://projects.spring.io/spring-boot/#/spring-bo
ot-starter-parent/websocket-client/pre>
p>----
/p>
p>缺少启动类，找不到入口啊
/p>
pre class='language-javascript'>
Spring-Boot-Version: 2.1.4.RELEASE
+ Main-Class: org.springframework.boot.loader.JarLauncher
+ Start-Class: com.xue.study.WebsocketClientDemo
Spring-Boot-Classes: BOOT-INF/classes/
Spring-Boot-Lib: BOOT-INF/lib//pre>
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