Error resolving template，template might not exist or might not be accessible by any of the configured Template Resolvers

template might not exist or might not be accessible by any of the configured Template Resolvers
    at org.thymeleaf.engine.TemplateManager.resolveTemplate(TemplateManager.java:) ~[thymeleaf-3.0..RELEASE.jar:3.0..RELEASE]
    at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:) ~[thymeleaf-3.0..RELEASE.jar:3.0..RELEASE]
    at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:) [thymeleaf-3.0..RELEASE.jar:3.0..RELEASE]
    at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:) [thymeleaf-3.0..RELEASE.jar:3.0..RELEASE]
    at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:) [thymeleaf-spring5-3.0..RELEASE.jar:3.0..RELEASE]
    at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:) [thymeleaf-spring5-3.0..RELEASE.jar:3.0..RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:) [spring-webmvc-5.1..RELEASE.jar:5.1..RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:) [tomcat-embed-websocket-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:) [spring-web-5.1..RELEASE.jar:5.1..RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:) [na:1.8.0_144]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:) [na:1.8.0_144]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:) [tomcat-embed-core-9.0..jar:9.0.]
    at java.lang.Thread.run(Thread.java:) [na:1.8.0_144]

-- ::28.378 ERROR  --- [nio--exec-] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template [<!DOCTYPE HTML>
<html>

 ": Error resolving template [<!DOCTYPE HTML>
<html>
<head>

报错原因：

是由于问题所在与解析问题，返回给

@RequestMapping(value = "/to_list" ,produces = "text/html")

    public String list(Model model, MiaoshaUser user, HttpServletRequest request, HttpServletResponse response) {
        model.addAttribute("user", user);
        //查询商品列表
        List<GoodsVo> goodsList = goodsService.listGoodsVo();
        model.addAttribute("goodsList", goodsList);
        String html = redisService.get(GoodsKey.getGoodsList, "", String.class);
        if (!StringUtils.isEmpty(html)){
            return html;
        }

        WebContext ctx = new WebContext(request,response,request.getServletContext(),
                request.getLocale(),model.asMap());
        html =thymeleafViewResolver.getTemplateEngine().process("goods_list",ctx);
        return html;
    }

返回浏览器是这个html，那么就需要以html形式返回，所以需要加上@responsebody来