묻고 답해요

orderList.html 코드에서 ${T(~~)}의 T란?

미해결

안녕하세요, JPA 활용편 1강을 완강하고 질문 드립니다. OrderController에서 현재 들어온 주문을 전부 보여주기 위한 Html 코드가 orderList.html인데 Q : T는 Type인건가요? 예를 들면, orderStatus는 ORDER, CANCEL인데, 저 둘 중 하나를 보여주는 건가요? 강의 중 말씀하신 거 같은데 확실치 않아 질문 남깁니다.

• orderlist
• jpa
• 활용편
• ordercontroller
• ${t(jpabook~~)}

주문 등록을 한 다음 orderList 주문내역을 보려하면 에러가 뜹니다.

미해결

실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발

@PostMapping("/order") order 주문 등록을 한 다음 @GetMapping("/orders") orderList 주문내역을 보려하면 정상 사진 밑의 에러가 뜹니다. 주문등록 post 를 하지 않은 상태에서 orderList 주문 내역 폼은 아래처럼 정상적으로 뜹니다. H2 디비를 확인 시, orders에도 멀쩡하게 잘 있습니다. 아래에 주문 관련 파일 올렸습니다. ㅜㅜ Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback. Tue Dec 06 17:44:30 KST 2022 There was an unexpected error (type=Internal Server Error, status=500). An error happened during template parsing (template: "class path resource [templates/order/orderList.html]") org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/order/orderList.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:366 ) at org.thymeleaf.spring5.view.ThymeleafView.render( ThymeleafView.java:190 ) at org.springframework.web.servlet.DispatcherServlet.render( DispatcherServlet.java:1405 ) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult( DispatcherServlet.java:1149 ) at org.springframework.web.servlet.DispatcherServlet.doDispatch( DispatcherServlet.java:1088 ) at org.springframework.web.servlet.DispatcherServlet.doService( DispatcherServlet.java:964 ) at org.springframework.web.servlet.FrameworkServlet.processRequest( FrameworkServlet.java:1006 ) at org.springframework.web.servlet.FrameworkServlet.doGet( FrameworkServlet.java:898 ) at javax.servlet.http.HttpServlet.service( HttpServlet.java:670 ) at org.springframework.web.servlet.FrameworkServlet.service( FrameworkServlet.java:883 ) at javax.servlet.http.HttpServlet.service( HttpServlet.java:779 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:227 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:162 ) at org.apache.tomcat.websocket.server.WsFilter.doFilter( WsFilter.java:53 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:189 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:162 ) at org.springframework.web.filter.RequestContextFilter.doFilterInternal( RequestContextFilter.java:100 ) at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:117 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:189 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:162 ) at org.springframework.web.filter.FormContentFilter.doFilterInternal( FormContentFilter.java:93 ) at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:117 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:189 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:162 ) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal( CharacterEncodingFilter.java:201 ) at org.springframework.web.filter.OncePerRequestFilter.doFilter( OncePerRequestFilter.java:117 ) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:189 ) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:162 ) at org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:197 ) at org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:97 ) at org.apache.catalina.authenticator.AuthenticatorBase.invoke( AuthenticatorBase.java:541 ) at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:135 ) at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:92 ) at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:78 ) at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:360 ) at org.apache.coyote.http11.Http11Processor.service( Http11Processor.java:399 ) at org.apache.coyote.AbstractProcessorLight.process( AbstractProcessorLight.java:65 ) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process( AbstractProtocol.java:893 ) at org.apache.tomcat.util.net .NioEndpoint$SocketProcessor.doRun( NioEndpoint.java:1789 ) at org.apache.tomcat.util.net.SocketProcessorBase.run ( SocketProcessorBase.java:49 ) 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:61 ) at java.base/java.lang.Thread.run( Thread.java:834 ) Caused by: org.attoparser.ParseException: Exception evaluating SpringEL expression: "item.orderItems[0]. item.name " (template: "order/orderList" - line 43, col 13) 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 ) ... 48 more Caused by: org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "item.orderItems[0]. item.name " (template: "order/orderList" - line 43, col 13) at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate( SPELVariableExpressionEvaluator.java:292 ) at org.thymeleaf.standard.expression.VariableExpression.executeVariableExpression( VariableExpression.java:166 ) at org.thymeleaf.standard.expression.SimpleExpression.executeSimple( SimpleExpression.java:66 ) at org.thymeleaf.standard.expression.Expression.execute( Expression.java:109 ) at org.thymeleaf.standard.expression.Expression.execute( Expression.java:138 ) at org.thymeleaf.standard.processor.AbstractStandardExpressionAttributeTagProcessor.doProcess( AbstractStandardExpressionAttributeTagProcessor.java:144 ) 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$ElementTagProcessorWrapper.process( ProcessorConfigurationUtils.java:633 ) at org.thymeleaf.engine.ProcessorTemplateHandler.handleOpenElement( ProcessorTemplateHandler.java:1314 ) at org.thymeleaf.engine.OpenElementTag.beHandled( OpenElementTag.java:205 ) at org.thymeleaf.engine.Model.process( Model.java:282 ) at org.thymeleaf.engine.Model.process( Model.java:290 ) at org.thymeleaf.engine.IteratedGatheringModelProcessable.processIterationModel( IteratedGatheringModelProcessable.java:367 ) at org.thymeleaf.engine.IteratedGatheringModelProcessable.process( IteratedGatheringModelProcessable.java:221 ) at org.thymeleaf.engine.ProcessorTemplateHandler.handleCloseElement( ProcessorTemplateHandler.java:1640 ) at org.thymeleaf.engine.TemplateHandlerAdapterMarkupHandler.handleCloseElementEnd( TemplateHandlerAdapterMarkupHandler.java:388 ) at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler$InlineMarkupAdapterPreProcessorHandler.handleCloseElementEnd( InlinedOutputExpressionMarkupHandler.java:322 ) at org.thymeleaf.standard.inline.OutputExpressionInlinePreProcessorHandler.handleCloseElementEnd( OutputExpressionInlinePreProcessorHandler.java:220 ) at org.thymeleaf.templateparser.markup.InlinedOutputExpressionMarkupHandler.handleCloseElementEnd( InlinedOutputExpressionMarkupHandler.java:164 ) at org.attoparser.HtmlElement.handleCloseElementEnd( HtmlElement.java:169 ) at org.attoparser.HtmlMarkupHandler.handleCloseElementEnd( HtmlMarkupHandler.java:412 ) at org.attoparser.MarkupEventProcessorHandler.handleCloseElementEnd( MarkupEventProcessorHandler.java:473 ) at org.attoparser.ParsingElementMarkupUtil.parseCloseElement( ParsingElementMarkupUtil.java:201 ) at org.attoparser.MarkupParser.parseBuffer( MarkupParser.java:725 ) at org.attoparser.MarkupParser.parseDocument( MarkupParser.java:301 ) ... 50 more Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1025E: The collection has '0' elements, index '0' is invalid at org.springframework.expression.spel.ast.Indexer$CollectionIndexingValueRef.growCollectionIfNecessary( Indexer.java:704 ) at org.springframework.expression.spel.ast.Indexer$CollectionIndexingValueRef.getValue( Indexer.java:667 ) at org.springframework.expression.spel.ast.Indexer.getValueInternal( Indexer.java:101 ) at org.springframework.expression.spel.ast.CompoundExpression.getValueRef( CompoundExpression.java:61 ) at org.springframework.expression.spel.ast.CompoundExpression.getValueInternal( CompoundExpression.java:91 ) at org.springframework.expression.spel.ast.SpelNodeImpl.getValue( SpelNodeImpl.java:112 ) at org.springframework.expression.spel.standard.SpelExpression.getValue( SpelExpression.java:338 ) at org.thymeleaf.spring5.expression.SPELVariableExpressionEvaluator.evaluate( SPELVariableExpressionEvaluator.java:265 ) ... 75 more orderList.html order orderController orderService

• orderlist
• JPA
• 에러
• java
• spring
• 웹앱
• spring-boot