spring mvc 表单报错

jsp页面代码:

<%--
  Created by IntelliJ IDEA.
  User: 濃霧遠方
  Date: 2021/1/28
  Time: 19:22
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<html>
<head>
    <title>Spring MVC表单处理</title>
</head>
<body>

<h2>Student Information</h2>
<%--<jsp:useBean id="student" class="com.org.beans.Student" scope="request" />--%>
<form:form method="POST" action="/addStudent" commandName="command" modelAttribute="command">
    <table>
        <tr>
            <td><form:label path="name">名字：</form:label></td>
            <td><form:input path="name" /></td>
        </tr>
        <tr>
            <td><form:label path="age">年龄：</form:label></td>
            <td><form:input path="age" /></td>
        </tr>
        <tr>
            <td><form:label path="id">编号：</form:label></td>
            <td><form:input path="id" /></td>
        </tr>
        <tr>
            <td colspan="2">
                <input type="submit" value="提交表单"/>
            </td>
        </tr>
    </table>
</form:form>
</body>
</html>

StudentController代码

package com.org.controller;

import com.org.beans.Student;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

/**
 * @author 濃霧-遠方
 * @date 2021/1/28
 */
@Controller
@RequestMapping(value = "/")
public class StudentController {

    @RequestMapping(value = "student", method = RequestMethod.GET)
    public ModelAndView student() {
        ModelAndView model = new ModelAndView("student", "command", new Student());
        return model;
    }

    @RequestMapping(value = "addStudent", method = RequestMethod.POST)
    public String addStudent(@ModelAttribute("SpringWeb")Student student,
                             ModelMap model) {
        model.addAttribute("name", student.getName());
        model.addAttribute("age", student.getAge());
        model.addAttribute("id", student.getId());


        return "result";
    }
}

web.xml代码：

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="webApp" version="3.0"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
  http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
    <servlet-name>HelloWeb</servlet-name>
    <servlet-class>
      org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:springmvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>HelloWeb</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  
<!--  <welcome-file-list>-->
<!--    <welcome-file>index.jsp</welcome-file>-->
<!--  </welcome-file-list>-->
</web-app>

spring mvc配置文件代码：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.org" />

    <mvc:default-servlet-handler />

    <mvc:annotation-driven/>

    <mvc:view-controller path="/" view-name="student" />

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!--        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />-->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>


</beans>

浏览器页面显示：

在用spring MVC表单时候报错：

24-Mar-2021 15:25:23.851 严重 [http-nio-8080-exec-1] org.apache.catalina.core.ApplicationDispatcher.invoke Servlet[jsp]的Servlet.service()抛出异常
   java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute
       at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
       at org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:130)
       at org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:120)
       at org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:90)
       at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
       at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005flabel_005f0(student_jsp.java:266)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005fform_005f0(student_jsp.java:195)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspService(student_jsp.java:144)
       at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
       at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
       at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
       at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
       at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
       at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
       at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
       at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
       at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
       at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
       at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
       at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
       at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
       at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:880)
       at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1601)
       at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
       at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
       at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
       at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
       at java.base/java.lang.Thread.run(Thread.java:834)
24-Mar-2021 15:25:23.851 严重 [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke 在路径为/springMVCDemo的上下文中，Servlet[HelloWeb]的Servlet.service（）引发了具有根本原因的异常在 [21] 行处理 [/WEB-INF/jsp/student.jsp] 时发生异常

18: <form:form method="POST" action="/addStudent" commandName="command" modelAttribute="command">
19: <table>
20: <tr>
21: <td><form:label path="name">鍚嶅瓧锛?</form:label></td>
22: <td><form:input path="name" /></td>
23: </tr>
24: <tr>

Stacktrace:
   java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute
       at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
       at org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:130)
       at org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:120)
       at org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:90)
       at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
       at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005flabel_005f0(student_jsp.java:266)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005fform_005f0(student_jsp.java:195)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspService(student_jsp.java:144)
       at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
       at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
       at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
       at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
       at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
       at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
       at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
       at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
       at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
       at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
       at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
       at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
       at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
       at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:880)
       at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1601)
       at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
       at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
       at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
       at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
       at java.base/java.lang.Thread.run(Thread.java:834)
24-Mar-2021 15:25:24.624 严重 [http-nio-8080-exec-3] org.apache.catalina.core.ApplicationDispatcher.invoke Servlet[jsp]的Servlet.service()抛出异常
   java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute
       at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
       at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
       at org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:130)
       at org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:120)
       at org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:90)
       at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
       at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005flabel_005f0(student_jsp.java:266)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspx_meth_form_005fform_005f0(student_jsp.java:195)
       at org.apache.jsp.WEB_002dINF.jsp.student_jsp._jspService(student_jsp.java:144)
       at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:71)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:477)
       at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
       at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
       at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
       at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
       at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
       at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
       at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
       at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1244)
       at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
       at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
       at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
       at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
       at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
       at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
       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.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
       at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
       at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
       at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
       at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:880)
       at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1601)
       at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
       at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
       at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
       at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
       at java.base/java.lang.Thread.run(Thread.java:834)
24-Mar-2021 15:25:24.626 严重 [http-nio-8080-exec-3] org.apache.catalina.core.StandardWrapperValve.invoke 在路径为/springMVCDemo的上下文中，Servlet[HelloWeb]的Servlet.service（）引发了具有根本原因的异常在 [21] 行处理 [/WEB-INF/jsp/student.jsp] 时发生异常

把<form:label>里面的path去掉试一下