(标签-spring)

Question

springboot项目启动遇到问题

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 :: Spring Boot ::        (v2.2.2.RELEASE)
```java
2024-08-30 17:25:20.592  INFO 27688 --- [           main] com.SpringbootSchemaApplication          : Starting SpringbootSchemaApplication on VPC-yjyhzbd568 with PID 27688 (started by pubyjyhzbd568 in D:\开发项目\员工绩效考核管理系统加导入\springboot57n6g)
2024-08-30 17:25:20.603  INFO 27688 --- [           main] com.SpringbootSchemaApplication          : No active profile set, falling back to default profiles: default
2024-08-30 17:25:21.319  WARN 27688 --- [kground-preinit] o.s.h.c.j.Jackson2ObjectMapperBuilder    : For Jackson Kotlin classes support please add "com.fasterxml.jackson.module:jackson-module-kotlin" to the classpath
2024-08-30 17:25:44.180  WARN 27688 --- [           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.
2024-08-30 17:25:44.202  INFO 27688 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2024-08-30 17:25:44.277 ERROR 27688 --- [           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: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.SpringbootSchemaApplication.main(SpringbootSchemaApplication.java:14) [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

```

Answer 1

以下回复参考：皆我百晓生、券券喵儿等免费微信小程序作答:

从日志中可以看出，问题是由于缺少ServletWebServerFactory bean导致的。要解决这个问题，你需要确保你的项目中包含了正确的依赖。对于Spring Boot 2.x版本，你需要添加以下依赖到你的pom.xml文件中：

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

如果你使用的是Gradle构建工具，请将以下依赖添加到build.gradle文件中：

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
}

添加完依赖后，重新运行项目，问题应该会得到解决。