java.lang.NumberFormatException：对于输入字符串："id"，同时尝试将相关的 table 列检索到 jsp 选择框
java.lang.NumberFormatException: For input string: "id" while trying to retrive related table column to jsp selectbox
这个问题与上一个问题有点相关
感谢所有问题已解决。但是现在我遇到了另一个问题，我正在尝试制作一个包含相关列中所有行的选择框。这是我的 JSP 表格
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Добавить отдел</title>
<link href="../../webjars/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" />
<script src="../../webjars/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="../../webjars/jquery/3.0.0/js/jquery.min.js"></script>
</head>
<body>
<div class="container">
<spring:url value="/document/add" var="addURL" />
<h2>Добавить документ</h2>
<form:form modelAttribute="documentForm" method="post" action="${addURL}" cssClass="form" >
<form:hidden path="id"/>
<div class="form-group">
<label>Название</label>
<form:input path="name" cssClass="form-control" id="firstname" />
</div>
<div class="form-group">
<label>Тип документа</label>
<form:select path="typeid">
<c:forEach var="documenttypeslist" items="${documenttypesList}">
<form:option value="${documenttypesList.id}" label="${documenttypesList.documenttype}"/>
</c:forEach>
</form:select>
</div>
<div class="form-group">
<label>Файл документа</label>
<form:input path="file" cssClass="form-control" id="firstname" />
</div>
<button type="submit" class="btn btn-success">Сохранить</button>
</form:form>
</div>
</body>
</html>
我的控制器的一部分要添加行：
public ModelAndView addDocument()
{
ModelAndView model= new ModelAndView();
Documents documents= new Documents();
List<Documenttypes> documenttypesList=documenttypesService.getAllDocumenttypes();
model.addObject("documentForm", documents);
model.addObject("documenttypesList", documenttypesList);
model.setViewName("documents_form");
return model;
}
我得到以下异常：
java.lang.NumberFormatException: For input string: "id"
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67) ~[na:na]
at java.base/java.lang.Integer.parseInt(Integer.java:668) ~[na:na]
at java.base/java.lang.Integer.parseInt(Integer.java:786) ~[na:na]
at javax.el.ListELResolver.coerce(ListELResolver.java:148) ~[tomcat-embed-el-9.0.53.jar:3.0.FR]
at javax.el.ListELResolver.getValue(ListELResolver.java:65) ~[tomcat-embed-el-9.0.53.jar:3.0.FR]
at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:124) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.el.parser.AstValue.getValue(AstValue.java:168) ~[tomcat-embed-el-9.0.53.jar:9.0.53]
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) ~[tomcat-embed-el-9.0.53.jar:9.0.53]
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:692) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jsp.WEB_002dINF.jsp.documents_005fform_jsp._jspService(documents_005fform_jsp.java:223) ~[na:na]
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1400) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
如果有必要，我愿意提供更多代码，但它重复了我之前的问题
我可能应该在这里添加我的整个控制器。可能会有帮助。
package com.example.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.example.model.Documenttypes;
import com.example.model.Documents;
import com.example.services.DocumenttypesService;
import com.example.services.DocumentsService;
@Controller
@RequestMapping(value="/document")
@SpringBootApplication
public class DocumentsController {
@Autowired
DocumentsService documentsService;
@Autowired
DocumenttypesService documenttypesService;
@RequestMapping(value="/list", method=RequestMethod.GET)
public ModelAndView list()
{
ModelAndView model=new ModelAndView("documents_list");
List<Documents> documentsList=documentsService.getAllDocuments();
model.addObject("documentsList", documentsList);
return model;
}
@RequestMapping(value="/add/", method=RequestMethod.GET)
public ModelAndView addDocument()
{
ModelAndView model= new ModelAndView();
Documents documents= new Documents();
List<Documenttypes> documenttypesList=documenttypesService.getAllDocumenttypes();
model.addObject("documentForm", documents);
model.addObject("documenttypeslist", documenttypesList);
model.setViewName("documents_form");
return model;
}
@RequestMapping(value="/editdocument/{id}", method=RequestMethod.GET)
public ModelAndView editDocument(@PathVariable int id)
{
ModelAndView model = new ModelAndView();
Documents documents = documentsService.getDocumentById(id);
model.addObject("documentForm", documents);
model.setViewName("documents_form");
return model;
}
@RequestMapping(value="/add", method=RequestMethod.POST)
public ModelAndView add(@ModelAttribute("documentsForm") Documents documents)
{
documentsService.addDocument(documents);
return new ModelAndView("redirect:/document/list");
}
@RequestMapping(value="/deletedocument/{id}", method=RequestMethod.GET)
public ModelAndView delete(@PathVariable("id") int id)
{
documentsService.deleteDocument(id);
return new ModelAndView("redirect:/document/list");
}
}
我认为问题可能是您的代码中 var 属性定义中的拼写错误。拜托，你能试试下面的代码吗？
<c:forEach var="documenttype" items="${documenttypesList}">
<form:option value="${documenttype.id}" label="${documenttype.documenttype}"/>
</c:forEach>
请注意从 documenttypesList 到 documenttypeslist 的变化。
此外，您可能可以简化 form:select 表达式。请尝试：
<form:select path="typeid">
<form:options items="${documenttypesList}"
itemLabel="documenttype"
itemValue="id" />
</form:select>
或者只是：
<form:select
path="typeid"
items="${documenttypesList}"
itemLabel="documenttype"
itemValue="id">
</form:select>
这个问题与上一个问题有点相关
感谢所有问题已解决。但是现在我遇到了另一个问题，我正在尝试制作一个包含相关列中所有行的选择框。这是我的 JSP 表格
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Добавить отдел</title>
<link href="../../webjars/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" />
<script src="../../webjars/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="../../webjars/jquery/3.0.0/js/jquery.min.js"></script>
</head>
<body>
<div class="container">
<spring:url value="/document/add" var="addURL" />
<h2>Добавить документ</h2>
<form:form modelAttribute="documentForm" method="post" action="${addURL}" cssClass="form" >
<form:hidden path="id"/>
<div class="form-group">
<label>Название</label>
<form:input path="name" cssClass="form-control" id="firstname" />
</div>
<div class="form-group">
<label>Тип документа</label>
<form:select path="typeid">
<c:forEach var="documenttypeslist" items="${documenttypesList}">
<form:option value="${documenttypesList.id}" label="${documenttypesList.documenttype}"/>
</c:forEach>
</form:select>
</div>
<div class="form-group">
<label>Файл документа</label>
<form:input path="file" cssClass="form-control" id="firstname" />
</div>
<button type="submit" class="btn btn-success">Сохранить</button>
</form:form>
</div>
</body>
</html>
我的控制器的一部分要添加行：
public ModelAndView addDocument()
{
ModelAndView model= new ModelAndView();
Documents documents= new Documents();
List<Documenttypes> documenttypesList=documenttypesService.getAllDocumenttypes();
model.addObject("documentForm", documents);
model.addObject("documenttypesList", documenttypesList);
model.setViewName("documents_form");
return model;
}
我得到以下异常：
java.lang.NumberFormatException: For input string: "id"
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:67) ~[na:na]
at java.base/java.lang.Integer.parseInt(Integer.java:668) ~[na:na]
at java.base/java.lang.Integer.parseInt(Integer.java:786) ~[na:na]
at javax.el.ListELResolver.coerce(ListELResolver.java:148) ~[tomcat-embed-el-9.0.53.jar:3.0.FR]
at javax.el.ListELResolver.getValue(ListELResolver.java:65) ~[tomcat-embed-el-9.0.53.jar:3.0.FR]
at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:124) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.el.parser.AstValue.getValue(AstValue.java:168) ~[tomcat-embed-el-9.0.53.jar:9.0.53]
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:189) ~[tomcat-embed-el-9.0.53.jar:9.0.53]
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:692) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jsp.WEB_002dINF.jsp.documents_005fform_jsp._jspService(documents_005fform_jsp.java:223) ~[na:na]
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:379) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:327) ~[tomcat-embed-jasper-9.0.53.jar:9.0.53]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:113) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:171) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1400) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1145) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1084) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.10.jar:5.3.10]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.10.jar:5.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.53.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.10.jar:5.3.10]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.10.jar:5.3.10]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.53.jar:9.0.53]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
如果有必要，我愿意提供更多代码，但它重复了我之前的问题
我可能应该在这里添加我的整个控制器。可能会有帮助。
package com.example.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.example.model.Documenttypes;
import com.example.model.Documents;
import com.example.services.DocumenttypesService;
import com.example.services.DocumentsService;
@Controller
@RequestMapping(value="/document")
@SpringBootApplication
public class DocumentsController {
@Autowired
DocumentsService documentsService;
@Autowired
DocumenttypesService documenttypesService;
@RequestMapping(value="/list", method=RequestMethod.GET)
public ModelAndView list()
{
ModelAndView model=new ModelAndView("documents_list");
List<Documents> documentsList=documentsService.getAllDocuments();
model.addObject("documentsList", documentsList);
return model;
}
@RequestMapping(value="/add/", method=RequestMethod.GET)
public ModelAndView addDocument()
{
ModelAndView model= new ModelAndView();
Documents documents= new Documents();
List<Documenttypes> documenttypesList=documenttypesService.getAllDocumenttypes();
model.addObject("documentForm", documents);
model.addObject("documenttypeslist", documenttypesList);
model.setViewName("documents_form");
return model;
}
@RequestMapping(value="/editdocument/{id}", method=RequestMethod.GET)
public ModelAndView editDocument(@PathVariable int id)
{
ModelAndView model = new ModelAndView();
Documents documents = documentsService.getDocumentById(id);
model.addObject("documentForm", documents);
model.setViewName("documents_form");
return model;
}
@RequestMapping(value="/add", method=RequestMethod.POST)
public ModelAndView add(@ModelAttribute("documentsForm") Documents documents)
{
documentsService.addDocument(documents);
return new ModelAndView("redirect:/document/list");
}
@RequestMapping(value="/deletedocument/{id}", method=RequestMethod.GET)
public ModelAndView delete(@PathVariable("id") int id)
{
documentsService.deleteDocument(id);
return new ModelAndView("redirect:/document/list");
}
}
我认为问题可能是您的代码中 var 属性定义中的拼写错误。拜托，你能试试下面的代码吗？
<c:forEach var="documenttype" items="${documenttypesList}">
<form:option value="${documenttype.id}" label="${documenttype.documenttype}"/>
</c:forEach>
请注意从 documenttypesList 到 documenttypeslist 的变化。
此外，您可能可以简化 form:select 表达式。请尝试：
<form:select path="typeid">
<form:options items="${documenttypesList}"
itemLabel="documenttype"
itemValue="id" />
</form:select>
或者只是：
<form:select
path="typeid"
items="${documenttypesList}"
itemLabel="documenttype"
itemValue="id">
</form:select>