请看看有没有web的起步依赖，或者是tomcat的依赖。
不要管有没有传递依赖，请手动添加。
状态：
"C:Program FilesJavajdk1.8.0_201injava.exe" -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true "-javaagent:C:Program FilesJetBrainsIntelliJ IDEA 2018.3.5libidea_rt.jar=64595:C:Program FilesJetBrainsIntelliJ IDEA 2018.3.5in" -Dfile.encoding=UTF-8 -classpath "C:Program FilesJavajdk1.8.0_201jrelibcharsets.jar;C:Program FilesJavajdk1.8.0_201jrelibdeploy.jar;C:Program FilesJavajdk1.8.0_201jrelibextaccess-bridge-64.jar;C:Program FilesJavajdk1.8.0_201jrelibextcldrdata.jar;C:Program FilesJavajdk1.8.0_201jrelibextdnsns.jar;C:Program FilesJavajdk1.8.0_201jrelibextjaccess.jar;C:Program FilesJavajdk1.8.0_201jrelibextjfxrt.jar;C:Program FilesJavajdk1.8.0_201jrelibextlocaledata.jar;C:Program FilesJavajdk1.8.0_201jrelibext ashorn.jar;C:Program FilesJavajdk1.8.0_201jrelibextsunec.jar;C:Program FilesJavajdk1.8.0_201jrelibextsunjce_provider.jar;C:Program FilesJavajdk1.8.0_201jrelibextsunmscapi.jar;C:Program FilesJavajdk1.8.0_201jrelibextsunpkcs11.jar;C:Program FilesJavajdk1.8.0_201jrelibextzipfs.jar;C:Program FilesJavajdk1.8.0_201jrelibjavaws.jar;C:Program FilesJavajdk1.8.0_201jrelibjce.jar;C:Program FilesJavajdk1.8.0_201jrelibjfr.jar;C:Program FilesJavajdk1.8.0_201jrelibjfxswt.jar;C:Program FilesJavajdk1.8.0_201jrelibjsse.jar;C:Program FilesJavajdk1.8.0_201jrelibmanagement-agent.jar;C:Program FilesJavajdk1.8.0_201jrelibplugin.jar;C:Program FilesJavajdk1.8.0_201jrelib esources.jar;C:Program FilesJavajdk1.8.0_201jrelib t.jar;D:codespring-already-studiedspring-chatspring-security-login argetclasses;D:mavenRepositoryorgspringframeworkootspring-boot-starter-security2.2.4.RELEASEspring-boot-starter-security-2.2.4.RELEASE.jar;D:mavenRepositoryorgspringframeworkootspring-boot-starter2.2.4.RELEASEspring-boot-starter-2.2.4.RELEASE.jar;D:mavenRepositoryorgspringframeworkootspring-boot2.2.4.RELEASEspring-boot-2.2.4.RELEASE.jar;D:mavenRepositoryorgspringframeworkootspring-boot-autoconfigure2.2.4.RELEASEspring-boot-autoconfigure-2.2.4.RELEASE.jar;D:mavenRepositoryorgspringframeworkootspring-boot-starter-logging2.2.4.RELEASEspring-boot-starter-logging-2.2.4.RELEASE.jar;D:mavenRepositorychqoslogbacklogback-classic1.2.3logback-classic-1.2.3.jar;D:mavenRepositorychqoslogbacklogback-core1.2.3logback-core-1.2.3.jar;D:mavenRepositoryorgslf4jslf4j-api1.7.30slf4j-api-1.7.30.jar;D:mavenRepositoryorgapachelogginglog4jlog4j-to-slf4j2.12.1log4j-to-slf4j-2.12.1.jar;D:mavenRepositoryorgapachelogginglog4jlog4j-api2.12.1log4j-api-2.12.1.jar;D:mavenRepositoryorgslf4jjul-to-slf4j1.7.30jul-to-slf4j-1.7.30.jar;D:mavenRepositoryjakartaannotationjakarta.annotation-api1.3.5jakarta.annotation-api-1.3.5.jar;D:mavenRepositoryorgspringframeworkspring-core5.2.3.RELEASEspring-core-5.2.3.RELEASE.jar;D:mavenRepositoryorgspringframeworkspring-jcl5.2.3.RELEASEspring-jcl-5.2.3.RELEASE.jar;D:mavenRepositoryorgyamlsnakeyaml1.25snakeyaml-1.25.jar;D:mavenRepositoryorgspringframeworkspring-aop5.2.3.RELEASEspring-aop-5.2.3.RELEASE.jar;D:mavenRepositoryorgspringframeworkspring-beans5.2.3.RELEASEspring-beans-5.2.3.RELEASE.jar;D:mavenRepositoryorgspringframeworksecurityspring-security-config5.2.1.RELEASEspring-security-config-5.2.1.RELEASE.jar;D:mavenRepositoryorgspringframeworksecurityspring-security-core5.2.1.RELEASEspring-security-core-5.2.1.RELEASE.jar;D:mavenRepositoryorgspringframeworkspring-context5.2.3.RELEASEspring-context-5.2.3.RELEASE.jar;D:mavenRepositoryorgspringframeworksecurityspring-security-web5.2.1.RELEASEspring-security-web-5.2.1.RELEASE.jar;D:mavenRepositoryorgspringframeworkspring-expression5.2.3.RELEASEspring-expression-5.2.3.RELEASE.jar;D:mavenRepositoryorgspringframeworkspring-web5.2.3.RELEASEspring-web-5.2.3.RELEASE.jar" com.a.chat.SpringBootChat . ____ _ __ _ _ /\ / ___'_ __ _ _(_)_ __ __ _ ( ( )\___ | '_ | '_| | '_ / _` | \/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.2.4.RELEASE) 2020-04-21 17:16:32.986 INFO 13444 --- [ main] com.a.chat.SpringBootChat : Starting SpringBootChat on W10ZJ-2020XTXNL with PID 13444 (D:codespring-already-studiedspring-chatspring-security-login argetclasses started by Administrator in D:codespring-already-studied) 2020-04-21 17:16:32.989 INFO 13444 --- [ main] com.a.chat.SpringBootChat : No active profile set, falling back to default profiles: default 2020-04-21 17:16:33.508 INFO 13444 --- [ main] com.a.chat.SpringBootChat : Started SpringBootChat in 0.854 seconds (JVM running for 3.199) Process finished with exit code 0
就输出一个Process finished with exit code 0，然后就自动关闭了。