BindingResult和bean名称'tabel'HTTP状态500的普通目标对象都不是

Question

在我的情况下，Web服务器返回HTTP状态500，请参阅下面的完整堆栈。

方法返回视图时，方法editWorker发生错误

 @RequestMapping(value=("/worker/edit/{workerId}"), method = RequestMethod.GET)
        public String editWorker(@PathVariable("workerId") Long workerId, Model model) {
            Worker worker = workerService.getWorkerById(workerId);
            model.addAttribute(worker);
            return "db_editor"; //error occurs here
        }

如果在使用第二种形式（.. modelAttribute =“tabel”..）时不使用spring标签，则没有错误。

请告诉我，出了什么问题？

jsp文件：

<%@ page contentType="text/html; charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="sf" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="s" uri="http://www.springframework.org/tags" %>

<div id="editor">
    <div id="f_ed">
        <sf:form method="post" action="/db_editor/worker/add" modelAttribute="worker">
            <sf:hidden path="id"/>
            <fieldset>
                <table>
                    <tr>
                        <td><sf:label path="fam">First name</sf:label></td>
                        <td><sf:input path="fam" size="30"/><br/>
                            <sf:errors path="fam" cssClass="error" />
                        </td>
                        <td>Табель</td>
                    </tr>
                    <tr>
                        <td><sf:label path="imj">Last name</sf:label></td>
                        <td><sf:input path="imj" size="30"/><br/>
                            <sf:errors path="imj" cssClass="error" />
                        </td>
                    </tr>
                    <tr>
                        <td><sf:label path="otch">Middle name</sf:label></td>
                        <td><sf:input path="otch" size="30"/><br/>
                            <sf:errors path="otch" cssClass="error" />
                        </td>
                    </tr>
                    <tr>
                        <td></td>
                        <td><input name="commit" type="submit" value="Commit" />
                        </td>
                    </tr>
                </table>
            </fieldset>
        </sf:form>
    </div>
    <div id="tab_ed">
        <sf:form method="post" action="/db_editor/tabel/add" modelAttribute="tabel">
            <sf:input path="d" type="date" />
            <sf:input path="d_type" size="2"/>
            <input name="commit" type="submit" value="Add">

        </sf:form>
    </div>
    <c:if test="${!empty workerList}">
        <div id = "r_ed">
            <table>
                <tr>
                    <th>Name</th>
                    <th>BD</th>
                </tr>
                <c:forEach var="worker" items="${workerList}">
                    <s:url value="db_editor/worker/edit/${worker.id}" var="edit_url" />
                    <tr>
                        <td>${worker.fam}</td>
                        <td>${worker.imj}</td>
                        <td>${worker.otch}</td>
                        <td><fmt:formatDate value="${worker.dbirth}" pattern="dd.MM.yyyy" /> </td>
                        <td><a href="${edit_url}">Edit</a></td>
                        <td><a href="db_editor/worker/delete/${worker.id}">Delete</a></td>
                    </tr>
                </c:forEach>
            </table>
        </div>
    </c:if>
</div>

控制器：

import ..

@Controller
@RequestMapping("/db_editor")
public class DBEditorController_test {
    private WorkerService workerService;
    private TabelService tabelService;

    @Inject
    public DBEditorController_test(WorkerService workerService, TabelService tabelService) {
        this.workerService = workerService;
        this.tabelService = tabelService;
    }

    @RequestMapping(method = RequestMethod.GET)
    public String getWorkers(Model model) {
        model.addAttribute("worker", new Worker());
        model.addAttribute("tabel", new Tabel());
        model.addAttribute("workerList", this.workerService.listWorker()); 

        return "db_editor";
    }

    @RequestMapping(value = "/worker/add", method = RequestMethod.POST)
    public String addWorkerFromForm(Worker worker) {
        workerService.addWorker(worker);
        return "redirect:/db_editor";
    }

    @RequestMapping("/worker/delete/{workerId}")
    public String delWorker(@PathVariable("workerId") Long workerId) {
        workerService.deleteWorker(workerId);
        return "redirect:/db_editor";
    }

    @RequestMapping(value=("/worker/edit/{workerId}"), method = RequestMethod.GET)
    public String editWorker(@PathVariable("workerId") Long workerId, Model model) {
        Worker worker = workerService.getWorkerById(workerId);
        model.addAttribute(worker);
        return "db_editor";
    }

    @RequestMapping(value = "/tabel/add", method = RequestMethod.POST)
    public String addOneDayForTabel (Tabel tabel) {
        tabel.setWorker( workerService.getWorkerById( 2L ) );
        tabelService.addTabel( tabel );
        return "redirect:/db_editor";
    }
}

模型：

Worker.java

@Entity
@Table(name="workers")
public class Worker {

    @Id
    @Column(name = "id")
    @GeneratedValue
    private Long id;

    @Column(name = "fam")
    private String fam;

    @Column(name = "imj")
    private String imj;

    @Column(name = "otch")
    private String otch;

    @Column(name = "dbirth")
    private Date dbirth;

/*getters and setters*/
}

Tabel.java

@Entity
@Table(name="tabel")
public class Tabel {

    @Id
    @Column(name = "id")
    @GeneratedValue
    private Long id;

    @Column(name = "d")
    private Date d;

    @Column(name = "d_type")
    private String d_type;

    @ManyToOne
    @JoinColumn(name="worker_id")
    private Worker worker;

    /*getters and setters*/
}

Full StackTrace：

HTTP Status 500 - Request processing failed; nested exception is org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/views/main_template.jsp'.

type Exception report

message Request processing failed; nested exception is org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/views/main_template.jsp'.

description The server encountered an internal error that prevented it from fulfilling this request.

exception

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/views/main_template.jsp'.
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:656)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root cause

org.apache.tiles.impl.CannotRenderException: ServletException including path '/WEB-INF/views/main_template.jsp'.
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:680)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
    org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root cause

org.apache.tiles.util.TilesIOException: ServletException including path '/WEB-INF/views/main_template.jsp'.
    org.apache.tiles.servlet.context.ServletUtil.wrapServletException(ServletUtil.java:232)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:243)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
    org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:678)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
    org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root cause

javax.servlet.ServletException: org.apache.tiles.jsp.taglib.TilesJspException: IO Error executing tag: JSPException including path '/WEB-INF/views/db_editor.jsp'.
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:906)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:838)
    org.apache.jsp.WEB_002dINF.views.main_005ftemplate_jsp._jspService(main_005ftemplate_jsp.java:223)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
    org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:678)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
    org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root cause

org.apache.tiles.util.TilesIOException: JSPException including path '/WEB-INF/views/db_editor.jsp'.
    org.apache.tiles.servlet.context.ServletUtil.wrapServletException(ServletUtil.java:232)
    org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:105)
    org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:96)
    org.apache.tiles.renderer.impl.UntypedAttributeRenderer.write(UntypedAttributeRenderer.java:61)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:337)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:234)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:211)
    org.apache.tiles.jsp.taglib.RenderTag.doEndTag(RenderTag.java:220)
    org.apache.jsp.WEB_002dINF.views.main_005ftemplate_jsp._jspx_meth_t_005finsertAttribute_005f0(main_005ftemplate_jsp.java:271)
    org.apache.jsp.WEB_002dINF.views.main_005ftemplate_jsp._jspService(main_005ftemplate_jsp.java:159)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
    org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:678)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
    org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
root cause

java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'tabel' available as request attribute
    org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:141)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:174)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:194)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:160)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.autogenerateId(AbstractDataBoundFormElementTag.java:147)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:138)
    org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:122)
    org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:408)
    org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:140)
    org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102)
    org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79)
    org.apache.jsp.WEB_002dINF.views.db_005feditor_jsp._jspx_meth_sf_005finput_005f3(db_005feditor_jsp.java:630)
    org.apache.jsp.WEB_002dINF.views.db_005feditor_jsp._jspx_meth_sf_005fform_005f1(db_005feditor_jsp.java:587)
    org.apache.jsp.WEB_002dINF.views.db_005feditor_jsp._jspService(db_005feditor_jsp.java:317)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:945)
    org.apache.jasper.runtime.PageContextImpl.doInclude(PageContextImpl.java:679)
    org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:673)
    org.apache.tiles.jsp.context.JspTilesRequestContext.include(JspTilesRequestContext.java:103)
    org.apache.tiles.jsp.context.JspTilesRequestContext.dispatch(JspTilesRequestContext.java:96)
    org.apache.tiles.renderer.impl.UntypedAttributeRenderer.write(UntypedAttributeRenderer.java:61)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:337)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:234)
    org.apache.tiles.jsp.taglib.InsertAttributeTag.render(InsertAttributeTag.java:211)
    org.apache.tiles.jsp.taglib.RenderTag.doEndTag(RenderTag.java:220)
    org.apache.jsp.WEB_002dINF.views.main_005ftemplate_jsp._jspx_meth_t_005finsertAttribute_005f0(main_005ftemplate_jsp.java:271)
    org.apache.jsp.WEB_002dINF.views.main_005ftemplate_jsp._jspService(main_005ftemplate_jsp.java:159)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.forward(ServletTilesRequestContext.java:241)
    org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:222)
    org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)
    org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:103)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:659)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:678)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:633)
    org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:322)
    org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)
    org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
    org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
    org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
    org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

Answer 1

控制器上的编辑方法 - editWorker - 未向模型添加tabel属性。实际上他们中的任何一个都在这样做，但都重定向到同一个视图。因此，您需要在方法中添加该模型属性，就像在getWorkers处一样。

但是我的建议是你应该编写用@ModelAttribute注释的方法来默认添加这些属性，这样它们将始终成为模型的一部分。如果您的任何请求映射方法添加它们，它们将覆盖那些默认值。

@ModelAttribute ( "worker" )
public Worker setWorkerToModel(  )
{
  return new Worker();
}

@ModelAttribute ( "tabel" )
public Tabel setTabelToModel(  )
{
  return new Tabel();
}

然后，您可以从getWorkers方法中删除以下行。

model.addAttribute("worker", new Worker());
model.addAttribute("tabel", new Tabel());