嗨，我知道它是重复的，但是部署到tomcat时我没有收到任何错误。后端没有启动，但是我可以看到前端。单击登录后，出现404 not found错误。以下是我的日志。理想情况下，任何war文件都应部署在外部服务器中。请帮助。
21-Feb-2019 03:48:35.228 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 551 ms
21-Feb-2019 03:48:35.244 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
21-Feb-2019 03:48:35.244 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.38
21-Feb-2019 03:48:35.259 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [D:\software\apache-tomcat-8.5.38\webapps\jhipster-registry-4.1.1.war]
21-Feb-2019 03:48:40.400 INFO [localhost-startStop-1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
21-Feb-2019 03:48:40.431 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [D:\software\apache-tomcat-8.5.38\webapps\jhipster-registry-4.1.1.war] has finished in [5,172] ms
21-Feb-2019 03:48:40.431 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\software\apache-tomcat-8.5.38\webapps\docs]
21-Feb-2019 03:48:40.447 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\software\apache-tomcat-8.5.38\webapps\docs] has finished in [16] ms
21-Feb-2019 03:48:40.447 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\software\apache-tomcat-8.5.38\webapps\examples]
21-Feb-2019 03:48:40.603 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\software\apache-tomcat-8.5.38\webapps\examples] has finished in [156] ms
21-Feb-2019 03:48:40.603 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\software\apache-tomcat-8.5.38\webapps\host-manager]
21-Feb-2019 03:48:40.619 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\software\apache-tomcat-8.5.38\webapps\host-manager] has finished in [16] ms
21-Feb-2019 03:48:40.619 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\software\apache-tomcat-8.5.38\webapps\manager]
21-Feb-2019 03:48:40.634 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\software\apache-tomcat-8.5.38\webapps\manager] has finished in [15] ms
21-Feb-2019 03:48:40.634 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [D:\software\apache-tomcat-8.5.38\webapps\ROOT]
21-Feb-2019 03:48:40.650 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [D:\software\apache-tomcat-8.5.38\webapps\ROOT] has finished in [16] ms
21-Feb-2019 03:48:40.650 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8761"]
21-Feb-2019 03:48:40.666 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
21-Feb-2019 03:48:40.666 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 5440 ms