SpringBoot 日志报错 No static resource favicon.ico

前言

SpringBoot 版本 ：3.2.4
JDK 版本：

knife4j 版本：4.5.0

问题概述

页面刷新时，日志有报错信息如下：

org.springframework.web.servlet.resource.NoResourceFoundException: No static resource favicon.ico.at org.springframework.web.servlet.resource.ResourceHttpRequestHandler.handleRequest(ResourceHttpRequestHandler.java:585)at org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter.handle(HttpRequestHandlerAdapter.java:52)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1089)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at com.alibaba.druid.support.jakarta.WebStatFilter.doFilter(WebStatFilter.java:73)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:391)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:63)at java.base/java.lang.Thread.run(Thread.java:833)

解决方案

1. 在项目 resources 目录下创建 static文件夹，其内放置 favicon.ico 文件。
   
   favicon.ico 随便一个文件即可，保障 请求可以找到此文件即可。