org.springframework.context.ApplicationContextException: Failed to start bean 'webServerStartStop'; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.5.jar:5.3.5]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_221]
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.5.jar:5.3.5]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) [spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1313) [spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) [spring-boot-2.4.4.jar:2.4.4]
	at com.lenovo.ofp.OfpApplication.main(OfpApplication.java:14) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_221]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_221]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_221]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_221]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.4.4.jar:2.4.4]
Caused by: org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:229) ~[spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:43) ~[spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:178) ~[spring-context-5.3.5.jar:5.3.5]
	... 20 common frames omitted
Caused by: java.lang.IllegalArgumentException: standardService.connector.startFailed
	at org.apache.catalina.core.StandardService.addConnector(StandardService.java:244) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:282) ~[spring-boot-2.4.4.jar:2.4.4]
	at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:213) ~[spring-boot-2.4.4.jar:2.4.4]
	... 22 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-9.0.44.jar:9.0.44]
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.catalina.core.StandardService.addConnector(StandardService.java:240) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	... 24 common frames omitted
Caused by: java.net.SocketException: Permission denied
	at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_221]
	at sun.nio.ch.Net.bind(Net.java:433) ~[na:1.8.0_221]
	at sun.nio.ch.Net.bind(Net.java:425) ~[na:1.8.0_221]
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[na:1.8.0_221]
	at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:300) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:253) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1204) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1290) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:614) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	at org.apache.catalina.connector.Connector.startInternal(Connector.java:1072) ~[tomcat-embed-core-9.0.44.jar:9.0.44]
	... 26 common frames omitted

windows上正常跑,但是在mac上不能正常,

原因为:

Linux不允许普通用户绑定到<= 1024 \的TCP端口。  你试图绑定到80，因此它失败了“权限被拒绝”,所以将port调整为>1024就可以了,比如8080