创建jar包

打包方法

To create an executable jar, we need to add the spring-boot-maven-plugin to our pom.xml. To do so, insert the following lines just below the dependencies section:

<build>
    <finalName>FirstSpringBootDemo</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-maven-plugin</artifactId>
          <version>2.2.5.RELEASE</version>
        </plugin>
      </plugins>
    </pluginManagement>
</build>

并将war换成jar：

<groupId>sjtu.chenzf</groupId>
<artifactId>hellospringboot</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>

然后使用Maven Projects里Lifecycle中package进行打包：

在target中可以找到打包完成后的文件：

基于jar包运行应用

在Windows环境下使用terminal：

D:\MarkdownFiles\SpringBoot\SpringBootDemo\Demo1\target>java -jar hellospringboot.jar

可能出现的问题：参考链接

D:\Learning\SpringBoot\SpringBootProject\FirstSpringBootDemo\target>java -jar FirstSpringBootDemo.jar
FirstSpringBootDemo.jar中没有主清单属性

在pom中修改build（添加executions部分）：

<build>
<finalName>FirstSpringBootDemo</finalName>
  <plugins>
    <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
      <version>2.3.4.RELEASE</version>
      <executions>
        <execution>
          <goals>
            <goal>repackage</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

target文件夹变化：