今天对工程代码结构重新做了调整，部署上去发现无法访问，报错如下：
2019/04/25 08:41:02 [ERROR] [http-nio-8080-exec-8] org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:182) - Servlet.service() for servlet [dispatcherServlet] in context with path [/spacex] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template "index", template might not exist or might not be accessible by any of the configured Template Resolvers] with root cause
org.thymeleaf.exceptions.TemplateInputException: Error resolving template "index", template might not exist or might not be accessible by any of the configured Template Resolvers
at org.thymeleaf.engine.TemplateManager.resolveTemplate(TemplateManager.java:870)
at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:607)
at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098)
at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072)
at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:354)
at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:187)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1325)
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)分析原因：
看报错是无法找到index页面或者配置错误导致无法解析，本次改造没有对后端代码逻辑做修改，不可能是Controller端的格式或者路径问题，很大可能是这次调整结构，静态资源等打包出问题。
于是排查pom.xml文件，发现工程的资源文件指向的是原本未改造成主子模块前的src目录底下的文件，以及target目录也变化了，于是重新设置模板文件路径和配置文件路径，重新打包部署即可。
修改前
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.html</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<excludes>
<exclude>application.properties</exclude>
<exclude>application-dev.properties</exclude>
<exclude>application-test.properties</exclude>
<exclude>application-prod.properties</exclude>
<exclude>doc/*</exclude>
</excludes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>application-${profiles.active}.properties</include>
<include>application.properties</include>
</includes>
</resource>
<resource>
<directory>src/main/react/dist</directory>
<excludes>
<exclude>index.html</exclude>
</excludes>
<targetPath>${basedir}/target/classes/static</targetPath>
</resource>
<resource>
<directory>src/main/react/dist</directory>
<excludes>
<exclude>**/*.css</exclude>
<exclude>**/*.js</exclude>
<exclude>.gitkeep</exclude>
<exclude>static/*</exclude>
</excludes>
<targetPath>${basedir}/target/classes/templates</targetPath>
</resource>
</resources><resources>
<resource>
<directory>${basedir}/src/main/java</directory>
<includes>
<include>**/*.html</include>
</includes>
<filtering>false</filtering>
</resource>
<resource>
<directory>${basedir}/src/main/resources</directory>
<excludes>
<exclude>application.properties</exclude>
<exclude>application-dev.properties</exclude>
<exclude>application-test.properties</exclude>
<exclude>application-prod.properties</exclude>
<exclude>doc/*</exclude>
</excludes>
<filtering>true</filtering>
</resource>
<resource>
<directory>${basedir}/src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>application-${profiles.active}.properties</include>
<include>application.properties</include>
</includes>
</resource>
<resource>
<directory>${basedir}/src/main/react/dist</directory>
<excludes>
<exclude>index.html</exclude>
</excludes>
<targetPath>${basedir}/target/classes/static</targetPath>
</resource>
<resource>
<directory>${basedir}/src/main/react/dist</directory>
<excludes>
<exclude>**/*.css</exclude>
<exclude>**/*.js</exclude>
<exclude>.gitkeep</exclude>
<exclude>static/*</exclude>
</excludes>
<targetPath>${basedir}/target/classes/templates</targetPath>
</resource>
</resources>