Spring Boot项目打jar包遇到的坑

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1. No Class Def Found Error javax JAXB
   参考博客：https://blog.csdn.net/hadues/article/details/79188793
   https://segmentfault.com/q/1010000012480240
   问题原因：

   JAXB API是java EE 的API，因此在java SE 9.0 中不再包含这个 Jar 包。
   java 9 中引入了模块的概念，默认情况下，Java SE中将不再包含java EE 的Jar包
   而在 java 6/7 / 8 时关于这个API 都是捆绑在一起的

• 快速和肮脏的解决方案：(仅JDK 9/10)
  要使JAXBAPI在运行时可用，请指定以下命令行选项：
  –add-modules java.xml.bind

• 对于使用Maven的工程：

  <dependency>
      <groupId>javax.xml.bind</groupId>
      <artifactId>jaxb-api</artifactId>
      <version>2.3.0</version>
  </dependency>
  <dependency>
      <groupId>com.sun.xml.bind</groupId>
      <artifactId>jaxb-impl</artifactId>
      <version>2.3.0</version>
  </dependency>
  <dependency>
      <groupId>com.sun.xml.bind</groupId>
      <artifactId>jaxb-core</artifactId>
      <version>2.3.0</version>
  </dependency>
  <dependency>
      <groupId>javax.activation</groupId>
      <artifactId>activation</artifactId>
      <version>1.1.1</version>
  </dependency>
  

• 或者网页下载上述包，放在工程的lib目录下并引入Build Path
  javax.activation-1.2.0.jar
  http://search.maven.org/remotecontent?filepath=com/sun/activation/javax.activation/1.2.0/javax.activation-1.2.0.jar
  jaxb-api-2.3.0.jar
  http://search.maven.org/remotecontent?filepath=javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar
  jaxb-core-2.3.0.jar
  http://search.maven.org/remotecontent?filepath=com/sun/xml/bind/jaxb-core/2.3.0/jaxb-core-2.3.0.jar
  jaxb-impl-2.3.0.jar
  http://search.maven.org/remotecontent?filepath=com/sun/xml/bind/jaxb-impl/2.3.0/jaxb-impl-2.3.0.jar

2. Error injecting: org.codehaus.plexus.archiver.jar.JarArchiver
   java.lang.ExceptionInInitializerError

   [ERROR] Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:2.6:jar (default-jar) on project te2: Execution default-jar of goal org.apache.maven.plugins:maven-jar-plugin:2.6:jar failed: An API incomp
   atibility was encountered while executing org.apache.maven.plugins:maven-jar-plugin:2.6:jar: java.lang.ExceptionInInitializerError: null

   核心错误实际是版本不兼容的问题，在修改pom.xml，rebuild即可

   <plugins>
               <plugin>
                   <groupId>org.springframework.boot</groupId>
                   <artifactId>spring-boot-maven-plugin</artifactId>
               </plugin>
               <plugin>
                   <groupId>org.apache.maven.plugins</groupId>
                   <artifactId>maven-jar-plugin</artifactId>
                   <version>2.4</version>
               </plugin>
           </plugins>