一、修改打包形式為war

在pom.xml裡設定
<packaging>war</packaging>

二、過濾springboot預設嵌入式tomcat外掛

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
<!-- 過濾springboot預設嵌入式tomcat外掛 -->
    <exclusions>
 

        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>

三、加入servlet-api的依賴

<dependency>
    <groupId>javax.servlet</groupId
 
>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
</dependency>

四、更改生成war包名

pom.xml - build 加入finalName。避免生成war包名歧義

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

四、繼承springboot啟動類並重寫configure方法

1）建立java類SpringBootStartApplication
2）繼承SpringBootServletInitializer 並重寫configure

public class SpringBootStartApplication extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
    // 此處Application.class替換為springboot預設啟動類
    return builder.sources(Application.class);
    }
}

五、打包

mvn clean package

注意：
系統環境系統變數jdk版本與打包專案的jdk版本一致，否則會出現tomcat啟動成功，首頁正常訪問而各個路徑均404