IDEA创建SpringleBoot Maven项目时服务器启动报错

IDEA创建SpringleBoot Maven项目时服务器启动报错，错误项如下：

2023-03-10 11:24:10.361  INFO 5948 --- [           main] demo2020jsj2.Demo2020jsj2Application     : Starting Demo2020jsj2Application on 张坚 with PID 5948 (D:\untitled2\target\classes started by Administrator in D:\untitled2)
2023-03-10 11:24:10.363  INFO 5948 --- [           main] demo2020jsj2.Demo2020jsj2Application     : No active profile set, falling back to default profiles: default
2023-03-10 11:24:10.435  WARN 5948 --- [           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.
2023-03-10 11:24:10.450 ERROR 5948 --- [           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:161) ~[spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:545) ~[spring-context-5.2.12.RELEASE.jar:5.2.12.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at demo2020jsj2.Demo2020jsj2Application.main(Demo2020jsj2Application.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:205) ~[spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:177) ~[spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:158) ~[spring-boot-2.3.7.RELEASE.jar:2.3.7.RELEASE]
    ... 9 common frames omitted


Process finished with exit code 1

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• 你可以看下这个问题的回答https://ask.csdn.net/questions/7633489
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• 您还可以看一下 杨俊老师的SpringBoot2.x从入门到实战教程课程中的 IDEA创建一个Maven项目小节, 巩固相关知识点
  

把你的pom依赖贴一下吧。估计是依赖的问题，

使用外部Tomcat还是springboot内置的？使用外部的要配置下，并且要把内置的屏蔽

检查一下是不是添加了@SpringBootApplication注解。springboot的web项目必须要加。

@SpringBootApplication
public class YourAppliationName extends SpringBootServletInitializer{
    public static void main(String[] args) {
        SpringApplication.run(YourAppliationName.class, args);
    }
}

如果不是web项目，需要在application.properties中可以进行添加：spring.main.web-application-type=none

这个错误是由于缺少ServletWebServerFactory bean导致的，可以在pom.xml文件中添加如下依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

这个依赖会自动引入Tomcat作为Servlet容器，并且会自动配置ServletWebServerFactory bean。如果需要使用其他的Servlet容器，可以在pom.xml文件中添加相应的依赖，并进行相应的配置。最后，需要重新构建和部署项目，确保ServletWebServerFactory bean能够正确加载和使用。
参考于：Cursor 应用