springboot打war包在外部tomcat上运行

1. 设置打包方式为 war 包

<packaging>war</packaging>

2. 排除springboot的内嵌tomcat

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <!-- 排除嵌入式tomcat -->
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<!--声明spring boot内嵌tomcat的作用范围  在运行时不起作用-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

3. 自定义打成的war包名称

<build>
    <finalName>wdxcx</finalName>
    <plugins>
    	...
    </plugins>
</build>

4. 配置maven打包插件，设置不打包测试单元

<plugins>
    <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
    </plugin>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.2.2</version>
        <configuration>
            <!--如果想在没有web.xml文件的情况下构建WAR，请设置为false。-->
            <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
    </plugin>

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>2.20.1</version>
        <configuration>
            <!-- 不指定单元测试 -->
            <skipTests>true</skipTests>
        </configuration>
    </plugin>
</plugins>

5. 启动类继承 SpringBootServletInitializer 类，并重写configure方法

@SpringBootApplication
public class WjxcxApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(WjxcxApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(WjxcxApplication.class, args);
    }
}

注：放入外部tomcat中的项目，其项目名必须与访问地址中访问的项目名相同

参考博客：
https://www.cnblogs.com/jpfss/p/9042249.html
https://blog.csdn.net/weixin_40990818/article/details/81783493