使用svn来checkout项目，idea上运行时出现：Unable to start ServletWebServerApplicationContext due to missing Servle

idea的console显示如下：

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:157)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:540)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:316)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)
	at com.ruoyi.AgrlApplication.main(AgrlApplication.java:17)
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:206)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.createWebServer(ServletWebServerApplicationContext.java:180)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.onRefresh(ServletWebServerApplicationContext.java:154)
	... 8 common frames omitted

Process finished with exit code 1

原因

公司项目部署在外置tomcat服务器上，而在本地部署的时候是使用的springboot内置了tomcat，
因此将pom.xml中的代码进行修改

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

		</dependency>

将exclusions标签删除或者注释上即可。
修改如下

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!--
			<exclusions>
				<exclusion>
					<artifactId>spring-boot-starter-tomcat</artifactId>
					<groupId>org.springframework.boot</groupId>
				</exclusion>
			</exclusions>
			-->
		</dependency>

或者删除exclusions：

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