在SpringBoot中使用Thymeleaf模板，在本地打包部署完全没有问题，资源文件也都可以映射上，但是打包成jar包部署到服务器上时（CentOS7.4），就一直报org.thymeleaf.exceptions.TemplateInputException的异常
严重: Servlet.service() for servlet [dispatcherServlet] in context with path []
threw exception [Request processing failed; nested exception is org.thymeleaf.ex
ceptions.TemplateInputException: Error resolving template "/index", template might not exist or might not be accessible by any of the c
onfigured 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
最终在网上查找了解决方法，就是在return "/index";这行代码，去掉最前面的"/"就好了