问在云服务器上修改80端口后无法运行？

[lighthouse@VM-20-10-centos ~]$ cd /

[lighthouse@VM-20-10-centos /]$ cd home

[lighthouse@VM-20-10-centos home]$ ls

lighthouse qcl8080.jar qct80.jar

[lighthouse@VM-20-10-centos home]$ java -jar qct80.jar

. ____ _ __ _ _

/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \

( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \

\\/ ___)| |_)| | | | | || (_| | ) ) ) )

' |____| .__|_| |_|_| |_\__, | / / / /

=========|_|==============|___/=/_/_/_/

:: Spring Boot :: (v2.6.5)

2022-03-26 18:56:31.675 INFO 13720 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication v0.0.1-SNAPSHOT using Java 1.8.0_322 on VM-20-10-centos with PID 13720 (/home/qct80.jar started by lighthouse in /home)

2022-03-26 18:56:31.685 INFO 13720 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to 1 default profile: "default"

2022-03-26 18:56:33.155 INFO 13720 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 80 (http)

2022-03-26 18:56:33.171 INFO 13720 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]

2022-03-26 18:56:33.171 INFO 13720 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.60]

2022-03-26 18:56:33.257 INFO 13720 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext

2022-03-26 18:56:33.258 INFO 13720 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1482 ms

2022-03-26 18:56:33.685 WARN 13720 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat serve

2022-03-26 18:56:33.689 INFO 13720 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]

2022-03-26 18:56:33.705 INFO 13720 --- [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2022-03-26 18:56:33.730 ERROR 13720 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat serve

at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.17.jar!/:5.3.17]

at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_322]

at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.17.jar!/:5.3.17]

at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740) [spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415) [spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312) [spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) [spring-boot-2.6.5.jar!/:2.6.5]

at com.example.demo.DemoApplication.main(DemoApplication.java:10) [classes!/:0.0.1-SNAPSHOT]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_322]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_322]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_322]

at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_322]

at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) [qct80.jar:0.0.1-SNAPSHOT]

at org.springframework.boot.loader.Launcher.launch(Launcher.java:108) [qct80.jar:0.0.1-SNAPSHOT]

at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [qct80.jar:0.0.1-SNAPSHOT]

at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [qct80.jar:0.0.1-SNAPSHOT]

Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat serve

at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:229) ~[spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:43) ~[spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.17.jar!/:5.3.17]

... 22 common frames omitted

Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed

at org.apache.catalina.core.StandardService.addConnector(StandardService.java:238) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:282) ~[spring-boot-2.6.5.jar!/:2.6.5]

at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:213) ~[spring-boot-2.6.5.jar!/:2.6.5]

... 24 common frames omitted

Caused by: org.apache.catalina.LifecycleException: Protocol handler start failed

at org.apache.catalina.connector.Connector.startInternal(Connector.java:1075) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.catalina.core.StandardService.addConnector(StandardService.java:234) ~[tomcat-embed-core-9.0.60.jar!/:na]

... 26 common frames omitted

Caused by: java.net.SocketException: Permission denied

at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_322]

at sun.nio.ch.Net.bind(Net.java:461) ~[na:1.8.0_322]

at sun.nio.ch.Net.bind(Net.java:453) ~[na:1.8.0_322]

at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:222) ~[na:1.8.0_322]

at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:274) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:229) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1227) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1313) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:614) ~[tomcat-embed-core-9.0.60.jar!/:na]

at org.apache.catalina.connector.Connector.startInternal(Connector.java:1072) ~[tomcat-embed-core-9.0.60.jar!/:na]

... 28 common frames omitted

这是报错，我就是在application.properties中添加了server.port=80，然后就出现以下的错误，在删除这一行之后是能够正常运行且不报错的，我想知道具体的原因，谢谢了