加载页面时发生Java Spring错误maven html error

koaltpgm  于 2022-11-27  发布在  Java
关注(0)|答案(1)|浏览(100)

运行程序时出现错误：

  1. 2022-11-25 18:31:53.591 ERROR 8435 --- [nio-8080-exec-1] 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.TemplateProcessingException: Error during execution of processor 'org.thymeleaf.spring5.processor.SpringInputGeneralFieldTagProcessor' (template: "greeting" - line 15, col 23)] with root cause
  3. java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'searchForm' available as request attribute
  4.         at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:153) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  5.         at org.springframework.web.servlet.support.RequestContext.getBindStatus(RequestContext.java:903) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  6.         at org.thymeleaf.spring5.context.webmvc.SpringWebMvcThymeleafRequestContext.getBindStatus(SpringWebMvcThymeleafRequestContext.java:227) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  7.         at org.thymeleaf.spring5.util.FieldUtils.getBindStatusFromParsedExpression(FieldUtils.java:306) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  8.         at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:253) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  9.         at org.thymeleaf.spring5.util.FieldUtils.getBindStatus(FieldUtils.java:227) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  10.         at org.thymeleaf.spring5.processor.AbstractSpringFieldTagProcessor.doProcess(AbstractSpringFieldTagProcessor.java:174) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  11.         at org.thymeleaf.processor.element.AbstractAttributeTagProcessor.doProcess(AbstractAttributeTagProcessor.java:74) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  12.         at org.thymeleaf.processor.element.AbstractElementTagProcessor.process(AbstractElementTagProcessor.java:95) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  13.         at org.thymeleaf.util.ProcessorConfigurationUtils$ElementTagProcessorWrapper.process(ProcessorConfigurationUtils.java:633) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  14.         at org.thymeleaf.engine.ProcessorTemplateHandler.handleStandaloneElement(ProcessorTemplateHandler.java:918) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  15.         at org.thymeleaf.engine.StandaloneElementTag.beHandled(StandaloneElementTag.java:228) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  16.         at org.thymeleaf.engine.TemplateModel.process(TemplateModel.java:136) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  17.         at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:661) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  18.         at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  19.         at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072) ~[thymeleaf-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  20.         at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:366) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  21.         at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:190) ~[thymeleaf-spring5-3.0.15.RELEASE.jar!/:3.0.15.RELEASE]
  22.         at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1405) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  23.         at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1149) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  24.         at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1088) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  25.         at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  26.         at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  27.         at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  28.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:670) ~[tomcat-embed-core-9.0.68.jar!/:na]
  29.         at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.23.jar!/:5.3.23]
  30.         at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[tomcat-embed-core-9.0.68.jar!/:na]
  31.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.68.jar!/:na]
  32.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar!/:na]
  33.         at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.68.jar!/:na]
  34.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar!/:na]
  35.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar!/:na]
  36.         at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.23.jar!/:5.3.23]
  37.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar!/:5.3.23]
  38.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar!/:na]
  39.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar!/:na]
  40.         at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.23.jar!/:5.3.23]
  41.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar!/:5.3.23]
  42.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar!/:na]
  43.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar!/:na]
  44.         at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.23.jar!/:5.3.23]
  45.         at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar!/:5.3.23]
  46.         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.68.jar!/:na]
  47.         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.68.jar!/:na]
  48.         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.68.jar!/:na]
  49.         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.68.jar!/:na]
  50.         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.68.jar!/:na]
  51.         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.68.jar!/:na]
  52.         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.68.jar!/:na]
  53.         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.68.jar!/:na]
  54.         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.68.jar!/:na]
  55.         at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.68.jar!/:na]
  56.         at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.68.jar!/:na]
  57.         at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.68.jar!/:na]
  58.         at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789) ~[tomcat-embed-core-9.0.68.jar!/:na]
  59.         at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.68.jar!/:na]
  60.         at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.68.jar!/:na]
  61.         at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.68.jar!/:na]
  62.         at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.68.jar!/:na]
  63.         at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]

虽然我做的一切都是按照这个指南：https://spring.io/guides/gs/validating-form-input/
下面是我的代码：
greeting.html

  1. <!DOCTYPE HTML>
  2. <html xmlns:th="http://www.thymeleaf.org">
  3. <head>
  4.     <title>Getting Started: Serving Web Content</title> 
  5.     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
  6. </head>
  7. <body bgcolor="#191724">
  8.     <center>
  9.         
  10.         <h1 style="color: #e0def4;">
  11.             Hello!
  12.         </h1>
  13.         
  14.         <form action="#" method="post" th:action="@{/}" th:object="${searchForm}">
  15.             <input type="text" th:field="*{search}">
  16.             
  17.             <button type="submit">
  18.                 Search
  19.             </button>
  20.             
  21.         </form>
  22.         
  23.     </center>
  24. </body>
  25. </html>

SearchForm.java

  1. package org.privatec.coogle;
  3. public class SearchForm {
  4.     private String search;
  5.     
  6.     public String getSearch() {
  7.         return search;
  8.     }
  9.     
  10.     public void setSearch(String search) {
  11.         this.search = search;
  12.     }
  13. }

CoogleController.java

  1. package org.privatec.coogle.Controllers;
  3. import org.privatec.coogle.SearchForm;
  4. import org.springframework.stereotype.Controller;
  5. import org.springframework.web.bind.annotation.GetMapping;
  6. import org.springframework.web.bind.annotation.PostMapping;
  8. @Controller
  9. public class PrivacoogleController {
  11.     @GetMapping("/")
  12.     public String greeting() {
  13.         return "greeting";
  14.     }
  15.     
  16.     @PostMapping("/")
  17.     public void getPost(SearchForm searchForm) {
  18.         System.out.println(searchForm.getSearch());
  19.     }
  21. }

我用途：openjdk 19.0.1 2022-10-18ApacheMaven 3.8.6
我试图替换SearchForm.java和greeting.html中的一些元素，但我得到了同样的错误。

Html

1条答案

按热度按时间
tjrkku2a

tjrkku2a1#

你没有按照榜样做每件事。
您的获取请求不包含表单。
它必须是：

  1. @Controller
  2. public class PrivacoogleController {
  4.     @GetMapping("/")
  5.     public String greeting(SearchForm searchForm) {
  6.         return "greeting";
  7.     }
  8.     
  9.     @PostMapping("/")
  10.     public void getPost(SearchForm searchForm) {
  11.         System.out.println(searchForm.getSearch());
  12.     }
  14. }
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