为什么在启动spring-boot应用程序时出现错误？

Question

我无法启动我的spring-boot应用程序。遇到错误

Unable to start web server; nested exception is 
org.springframework.context.ApplicationContextException: Unable to start
ServletWebServerApplicationContext due to missing ServletWebServerFactory bean.

尝试了互联网上的所有内容。 @SpringBootApplication存在于主类中，并且扩展了SpringBootServletInitializer。

@SpringBootApplication(exclude = { SecurityAutoConfiguration.class })
public class ServiceApplication extends SpringBootServletInitializer{

Logger log = LoggerFactory.getLogger(getClass());

    public static void main(String[] args) {

       SpringApplication.run(ServiceApplication.class, args);
    }

}

请建议缺少什么？

下面是在我的pom.xml中添加的依赖项：

<dependencies>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.security.oauth</groupId>
    <artifactId>spring-security-oauth2</artifactId>
    <version>2.3.6.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-devtools</artifactId>
    <optional>true</optional>
</dependency>

<dependency>
    <groupId>commons-lang</groupId>
    <artifactId>commons-lang</artifactId>
    <version>2.6</version>
</dependency>

<dependency>
    <groupId>com.fasterxml.jackson.dataformat</groupId>
    <artifactId>jackson-dataformat-xml</artifactId>
</dependency>
<dependency>
    <groupId>DigitalConnectCheckInLib</groupId>
    <artifactId>digital-connect-check-in-lib</artifactId>
    <version>2.4.0</version>
</dependency>
<dependency>
    <groupId>com.ibm.selfservice.jetblue</groupId>
    <artifactId>b6-dcci-client</artifactId>
    <version>${cts.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
    <version>2.2.6.RELEASE</version>
    <type>maven-plugin</type>
</dependency>
</dependencies>