将SpringBoot的Maven项目打成jar包和war包

先需要明确的是，该项目打包的形态是可执行的jar包，还是在tomcat下运行的war包。

springboot自带的maven打包

1.创建一个springboot  web项目

1.api控制层HelloWorld.java

@RestController
@RequestMapping("/hello")
public class HelloWorld {@RequestMapping("/helloworld")public String helloworld(){return "hello world!";}
}

2.主程序类HelloworldMainApplication.java

@SpringBootApplication
public class HelloworldMainApplication extends SpringBootServletInitializer {//springboot项目打包成war包，使用外置的tomcat启动//1、首先需要继承 org.springframework.boot.context.web.SpringBootServletInitializer类//2、然后重写configure(SpringApplicationBuilder builder)方法@Overrideprotected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {// 注意这里要指向原先用main方法执行的Application启动类return builder.sources(HelloworldMainApplication.class);}public static void main(String[] args){SpringApplication.run(HelloworldMainApplication.class);}
}

3.pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.springbood</groupId><artifactId>SpringBoodTest1</artifactId><version>1.0-SNAPSHOT</version><packaging>jar</packaging><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.0.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><!-- <dependency>移除嵌入式tomcat插件<groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId><scope>provided</scope></dependency>--></dependencies><build><finalName>app1</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.4.11</version></plugin></plugins></build>
</project>

如果是jar包
需在pom.xml指定打成的包为：

<packaging>jar</packaging>

如果是war包。
需在pom.xml指定打成的包为：

<packaging>war</packaging>

并通过标签在打包的时候排除tomcat依赖

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId><scope>provided</scope>
</dependency>

添加插件

 <build><finalName>app1</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>2.4.11</version></plugin></plugins></build>

<finalName>标签是指定打包之后的名称

在pom.xml中添加完相应的标签之后，我们只需在项目同级（pom.xml同级）输入

mvn clean package

即可完成打包
如果想排除测试代码，则可以输入:

mvn clean package  -Dmaven.test.skip=true

来进行打包。

或者使用idea maven进行打包