Thymeleafでの共通レイアウト

Question

java version : 8
OS : macOS
開発環境 : intelliJ IDEA

共通のレイアウト(headerのようなもの)を使いたく思うのですが、なぜか以下のようなエラーが出ます。

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Fri Dec 21 19:25:24 JST 2018
There was an unexpected error (type=Internal Server Error, status=500).
An error happened during template parsing (template: "class path resource [templates/index.html]")
org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/index.html]")
	at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:241)
	at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parseStandalone(AbstractMarkupTemplateParser.java:100)
	at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:666)
	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:362)
	at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:189)
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1370)
	at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1116)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1055)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
	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:53)
	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.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
	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:93)
	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:199)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.attoparser.ParseException: Could not parse as expression: "${title==null}? 'TODOリスト' : ${title} | TODOリスト" (template: "layout" - line 8, col 12)
	at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:393)
	at org.attoparser.MarkupParser.parse(MarkupParser.java:257)
	at org.thymeleaf.templateparser.markup.AbstractMarkupTemplateParser.parse(AbstractMarkupTemplateParser.java:230)
	... 52 more
Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Could not parse as expression: "${title==null}? 'TODOリスト' : ${title} | TODOリスト" (template: "layout" - line 8, col 12)
	at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:131)
	at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:62)
	at org.thymeleaf.standard.expression.StandardExpressionParser.parseExpression(StandardExpressionParser.java:44)
	at org.thymeleaf.engine.EngineEventUtils.parseAttributeExpression(EngineEventUtils.java:220)
	at org.thymeleaf.engine.EngineEventUtils.computeAttributeExpression(EngineEventUtils.java:207)
	at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess(AbstractStandardExpressionAttributeTagProcessor.java:125)
	at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74)
	at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95)
	at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633)
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1314)
	at org.thymeleaf.engine.OpenElementTag.beHandled(OpenElementTag.java:205)
	at org.thymeleaf.engine.Model.process(Model.java:282)
	at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement(ProcessorTemplateHandler.java:1587)
	at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleOpenElementEnd(TemplateHandlerAdapterMarkupHandler.java:304)
	at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:278)
	at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleOpenElementEnd(OutputExpressionInlinePreProcessorHandler.java:186)
	at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler.handleOpenElementEnd(InlinedOutputExpressionMarkupHandler.java:124)
	at org.attoparser.HtmlElement.handleOpenElementEnd(HtmlElement.java:109)
	at org.attoparser.HtmlMarkupHandler.handleOpenElementEnd(HtmlMarkupHandler.java:297)
	at org.attoparser.MarkupEventProcessorHandler.handleOpenElementEnd(MarkupEventProcessorHandler.java:402)
	at org.attoparser.ParsingElementMarkupUtil.parseOpenElement(ParsingElementMarkupUtil.java:159)
	at org.attoparser.MarkupParser.parseBuffer(MarkupParser.java:710)
	at org.attoparser.MarkupParser.parseDocument(MarkupParser.java:301)
	... 54 more

以下にテンプレートで用いたindex.htmlとlayout.htmlを記載しています。
index.html(TOP画面)

<!DOCTYPE html>
<html lang="ja"
    layout:decorator="layout"
    xmlns="http://www.w3.org/1999/xhtml"
    xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head th:replace="layout :: baseHead(TOP画面,~{::link})">
    <link rel="stylesheet" th:href="@{/css/layout.css}" type="text/css"/>
</head>
<body>
    <div layout:decorate="layout" th:include="layout :: header"></div>
</body>
</html>

layout.html(共通レイアウト)

<!DOCTYPE html>
<html lang="ja"
      layout:decorator="layout"
      xmlns="http://www.w3.org/1999/xhtml"
      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<head th:fragment="baseHead(title,links)">
    <meta charset="UTF-8">
    <title th:text="${title==null}? 'TODOリスト' : ${title} | TODOリスト">TODOリスト</title>

    <th:block th:replace="${links}" />
</head>
<header th:fragment="header">
    <p>TODOリスト</p>
    <p>検索</p>
</header>
</html>

ご助力よろしくお願いいたします。。。

Comments

[退会済みユーザー]

Templateファイルが指定の位置にないだけじゃね

Answer 1

エラーをよく読みましょう

Caused by: org.attoparser.ParseException: Could not parse as expression: "${title==null}? 'TODOリスト' : ${title} | TODOリスト" (template: "layout" - line 8, col 12)

つまり　layout.htmlの8行目12文字目からの処理が間違えてるのでパースできない

これが理由

Comments

[naonao11]

ありがとうございます！！
エラーの見方がわかっていませんでした。。。次からは活用していきます！

Answer 2

動作確認はしていませんが、

layout :: baseHead(TOP画面,~{::link})

が問題なのではないでしょうか。

layout :: baseHead('TOP画面',~{::link})

なら良いかと。

大抵のThymeleafのエラーはスタックトレースの中にエラーが発生している行番号と位置が出力されるので、そこからエラーが起こっている具体的な場所を探せます。それを必ず記載しましょう。

Comments

[naonao11]

ありがとうございます！
変更してみましたが変わりませんでした。。。

また、こちらを参考にさせていただきましたがうまく動作しませんでした。。。
https://www.saka-en.com/java/spring-boot-thymeleaf-header-footer/

エラーを追記させていただきました！

[退会済みユーザー]

エラーそのものズバリ　タイトルタグだな。

[退会済みユーザー]

しかし、解析失敗した行数や文字目が書かれてるのが気づかない人なのか。
※ホワイトラベルのページにもエラー箇所が出てたはず