买了本书学习SpringBoot2+Thymeleaf企业应用实战,第一个启动web服务就出了问题,需要大家帮助

问题是我的Maven启动tomcat失败
代码如下:
package org.crazyit.boot.c2;

import org.springframework.boot.SpringApplication;

public class FirstApp {

    public static void main(String[] args) {
            // TODO Auto-generated method stub
            SpringApplication.run(FirstApp.class, args);
    }

}

报错信息为:
2019-03-24 19:57:17.767 INFO 9072 --- [ main] org.crazyit.boot.c2.FirstApp : Starting FirstApp on DESKTOP-F6OEIIT with PID 9072 (D:\workspace\first-boot\target\classes started by Song in D:\workspace\first-boot)
2019-03-24 19:57:17.773 INFO 9072 --- [ main] org.crazyit.boot.c2.FirstApp : No active profile set, falling back to default profiles: default
2019-03-24 19:57:17.814 INFO 9072 --- [ main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@f1da57d: startup date [Sun Mar 24 19:57:17 CST 2019]; root of context hierarchy
2019-03-24 19:57:18.046 WARN 9072 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.context.ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean.
2019-03-24 19:57:18.667 ERROR 9072 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.context.ApplicationContextException: Unable to start web server; nested exception is org.springframework.context.ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean.
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:155) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.crazyit.boot.c2.FirstApp.main(FirstApp.java:9) [classes/:na]
Caused by: org.springframework.context.ApplicationContextException: Unable to start ServletWebServerApplicationContext due to missing ServletWebServerFactory bean.
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.getWebServerFactory(ServletWebServerApplicationContext.java:204) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:178) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:152) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
... 8 common frames omitted

2个回答

注解打上啊·
import org.springframework.boot.SpringApplication;

@SpringBootApplication
public class FirstApp {

public static void main(String[] args) {
        // TODO Auto-generated method stub
        SpringApplication.run(FirstApp.class, args);
}

}

注释掉provided

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