SpringBoot 启动报错 “Unable to start ServletWebServerApplicationContext due to missing ServletWebServerF

野性酷女 2023-10-12 17:28 14阅读 0赞

#### 项目报错信息： ####

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70][]

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:
          
          
           156) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:
          
          
           544) ~[spring-context-
          
          
           5.2
          
          
           .2.RELEASE.jar:
          
          
           5.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:
          
          
           141) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:
          
          
           747) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:
          
          
           397) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.SpringApplication.run(SpringApplication.java:
          
          
           315) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.SpringApplication.run(SpringApplication.java:
          
          
           1226) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.SpringApplication.run(SpringApplication.java:
          
          
           1215) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at com.atguigu.yygh.gateway.ServerGatewayApplication.main(ServerGatewayApplication.java:
          
          
           11) ~[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:
          
          
           203) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:
          
          
           179) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:
          
          
           153) ~[spring-boot-
          
          
           2.2
          
          
           .2.RELEASE.jar:
          
          
           2.2
          
          
           .2.RELEASE]
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          	... 
          
          
           8 common frames omitted
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
           
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
           
         
         
          
        
        
         
        
        
        
         
         
         
          
        
        
         
        
        
         
         
         
          
           
          
          Process finished with exit code 
          
          
           1

#### 解决方法： ####

1，检查入口 Application 文件是否加了 **@SpringBootApplication** 注解，或者 **@SpringBootConfiguration、@EnableAutoConfiguration 两个注解**。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 1][]

2，检查 pom.xml 是否正确添加 web 依赖：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 2][]

#### 3、在启动类中，.class的名称要与启动类名称相同（低级错误，本人就是这个错误。在编码时候使用了idea的自动补全功能，导致这个低级错误的出现！） ####

**错误实例：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 3][]

正确实例:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 4][]

> **这真是一个很低级的错误，从这个错误中，可以反思进一步论证出： 编程是一项技术活儿和精细活儿，不论自身技术到了什么程度，都应该注意最基本的细节，否则会白白耗费自己大量的时间。**

特此记录。

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20210416154159603.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20210416155809615.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210416154341510.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/202104161559051.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/202104161559271.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzQ2NDA1NTg5,size_16,color_FFFFFF,t_70

SpringBoot 启动报错 “Unable to start ServletWebServerApplicationContext due to missing ServletWebServerF

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