Fatal编程技术网
  • java/
  • Java Spring Mvc:处理JSP页面时发生异常

Java Spring Mvc:处理JSP页面时发生异常

java rest jsp spring-mvc

Java Spring Mvc:处理JSP页面时发生异常,java,rest,jsp,spring-mvc,Java,Rest,Jsp,Spring Mvc,我使用的是一个springmvc应用程序，其前端界面如下所示： 登录页映射了controoler代码 @Controller @RequestMapping(value = "/") public class HomeController { @Autowired EmployeeService employeeService; @Autowired MessageSource messageSource; /** * get all t

我使用的是一个
springmvc
应用程序，其前端界面如下所示：

登录页映射了controoler代码

@Controller
@RequestMapping(value = "/")
public class HomeController {

    @Autowired
    EmployeeService employeeService;

    @Autowired
    MessageSource messageSource;

    /**
     * get all the employees of the companies
     * @param modelMap
     * @return
     */
    @RequestMapping(value = {"/", "/list"}, method = RequestMethod.GET)
    public String listEmployees(ModelMap modelMap) {

        List<Employee> employees = employeeService.findAllEmployees();
        modelMap.addAttribute("employees", employees);

        return "allemployees";
    }
}

链接
尝试打开
registration.jsp
页面，代码在这里

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
         pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Employee Registration Form</title>

    <style>
        .error {
            color: #ff0000;
        }
    </style>

</head>
<body>
<h2>Registration Form</h2>

<form:form method="POST" modelAttribute="employee">
    <form:input type="hidden" path="id" id="id"/>
    <table>
        <tr>
            <td><label for="name">Name: </label> </td>
            <td><form:input path="name" id="name"/></td>
            <td><form:errors path="name" cssClass="error"/></td>
        </tr>

        <tr>
            <td><label for="joiningDate">Joining Date: </label> </td>
            <td><form:input path="joiningDate" id="joiningDate"/></td>
            <td><form:errors path="joiningDate" cssClass="error"/></td>
        </tr>

        <tr>
            <td><label for="salary">Salary: </label> </td>
            <td><form:input path="salary" id="salary"/></td>
            <td><form:errors path="salary" cssClass="error"/></td>
        </tr>

        <tr>
            <td><label for="ssn">SSN: </label> </td>
            <td><form:input path="ssn" id="ssn"/></td>
            <td><form:errors path="ssn" cssClass="error"/></td>
        </tr>

        <tr>
            <td colspan="3">
                <c:choose>
                    <c:when test="${edit}">
                        <input type="submit" value="Update"/>
                    </c:when>
                    <c:otherwise>
                        <input type="submit" value="Register"/>
                    </c:otherwise>
                </c:choose>
            </td>
        </tr>
    </table>
</form:form>

<br/>
<br/>
Go back to <a href="<c:url value='/list' />">List of All Employees</a>
</body>
</html>
我还在
Intellij
中看到了红色的
URL
链接，例如

这是我在项目中使用的
pom.xml
文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.company.employee</groupId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>
    <artifactId>Practice</artifactId>
    <name>Employees Mgmt</name>

    <dependencies>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>18.0</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.20</version>
        </dependency>
        <dependency>
            <groupId>net.glxn</groupId>
            <artifactId>qrgen</artifactId>
            <version>1.3</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>4.2.4.RELEASE</version>
            <!--<version>RELEASE</version>-->
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.2.3.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.40</version>
        </dependency>
        <dependency>
            <groupId>javax.validation</groupId>
            <artifactId>validation-api</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate</artifactId>
            <version>5.0.1.Final</version>
            <type>pom</type>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.4.1.Final</version>
        </dependency>
        <dependency>
            <groupId>commons-validator</groupId>
            <artifactId>commons-validator</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.10.Final</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-core</artifactId>
            <version>3.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>3.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>3.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-taglibs</artifactId>
            <version>3.1.4.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.9.RELEASE</version>
        </dependency>
        <!-- Joda-Time -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
            <version>RELEASE</version>
        </dependency>
        <!-- To map JodaTime with database type -->
        <dependency>
            <groupId>org.jadira.usertype</groupId>
            <artifactId>usertype.core</artifactId>
            <version>RELEASE</version>
        </dependency>
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <!--<dependency>-->
        <!--<groupId>dbunit</groupId>-->
        <!--<artifactId>dbunit</artifactId>-->
        <!--<version>LATEST</version>-->
        <!--<scope>test</scope>-->
        <!--</dependency>-->

        <!-- testing in Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>org.testng</groupId>
            <artifactId>testng</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.mockito</groupId>
            <artifactId>mockito-all</artifactId>
            <version>RELEASE</version>
            <scope>test</scope>
        </dependency>
    </dependencies>



    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
            </resource>
        </resources>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.6.0</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.1.0</version>
                    <configuration>
                        <warSourceDirectory>src/main/webapp</warSourceDirectory>
                        <!--<warName>SpringHibernateExample</warName>-->
                        <failOnMissingWebXml>false</failOnMissingWebXml>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>
        <finalName>SpringHibernateExample</finalName>
    </build>

</project>
如果我携带
Id
作为参数，例如

public String newEmployees(ModelMap modelMap, @RequestParam Integer id{

  // some code 
}
我的控制器代码

   @RequestMapping(value = "/new", method = RequestMethod.GET)
    public String newEmployees(ModelMap modelMap, @RequestParam Integer id){

        Employee employee = new Employee();

        modelMap.addAttribute("employee", employee);
        modelMap.addAttribute("edit", false);

        return "registration";
    }
然后，我得到以下错误

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

29-Jul-2017 09:43:07.086 SEVERE [http-nio-8080-exec-4] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [dispatcher] in context with path [] threw exception [An exception occurred processing JSP page [/WEB-INF/jsps/registration.jsp] at line [25]

22: 
23: <h2>Registration Form</h2>
24: 
25: <form:form method="POST" modelAttribute="employee">
26:     <form:input type="hidden" path="id" id="id"/>
27: 
28:     <table>


Stacktrace:] with root cause
 java.lang.ClassNotFoundException: org.springframework.web.util.ExpressionEvaluationUtils
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
    at org.springframework.web.servlet.tags.form.AbstractFormTag.evaluate(AbstractFormTag.java:51)
    at org.springframework.web.servlet.tags.form.FormTag.resolveModelAttribute(FormTag.java:414)
    at org.springframework.web.servlet.tags.form.FormTag.autogenerateId(FormTag.java:406)
    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:143)
    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:127)
    at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:421)
    at org.springframework.web.servlet.tags.form.FormTag.writeTagContent(FormTag.java:353)
    at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:103)
    at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
    at org.apache.jsp.WEB_002dINF.jsps.registration_jsp._jspService(registration_jsp.java:177)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    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:742)
    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:52)
    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:728)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:467)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:392)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    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:52)
    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:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

我得到以下错误

    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)

29-Jul-2017 09:43:07.086 SEVERE [http-nio-8080-exec-4] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [dispatcher] in context with path [] threw exception [An exception occurred processing JSP page [/WEB-INF/jsps/registration.jsp] at line [25]

22: 
23: <h2>Registration Form</h2>
24: 
25: <form:form method="POST" modelAttribute="employee">
26:     <form:input type="hidden" path="id" id="id"/>
27: 
28:     <table>


Stacktrace:] with root cause
 java.lang.ClassNotFoundException: org.springframework.web.util.ExpressionEvaluationUtils
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
    at org.springframework.web.servlet.tags.form.AbstractFormTag.evaluate(AbstractFormTag.java:51)
    at org.springframework.web.servlet.tags.form.FormTag.resolveModelAttribute(FormTag.java:414)
    at org.springframework.web.servlet.tags.form.FormTag.autogenerateId(FormTag.java:406)
    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:143)
    at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:127)
    at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:421)
    at org.springframework.web.servlet.tags.form.FormTag.writeTagContent(FormTag.java:353)
    at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:103)
    at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
    at org.apache.jsp.WEB_002dINF.jsps.registration_jsp._jspService(registration_jsp.java:177)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:443)
    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:742)
    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:52)
    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:728)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:467)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:392)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:311)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:238)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:263)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208)
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    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:52)
    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:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)
我刚从这里开始，我觉得错误太多了。这里的问题是什么？如何解决？

您没有在POM文件中添加Spring web的依赖项

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.0.0.RC2</version>
</dependency>


org.springframework
弹簧网
5.0.0.RC2
请在添加此依赖项之前检查版本。它应该与其他Spring依赖项相同

您尚未在POM文件中添加SpringWeb的依赖项

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>5.0.0.RC2</version>
</dependency>


org.springframework
弹簧网
5.0.0.RC2
请在添加此依赖项之前检查版本。它应该与其他Spring依赖项相同

使用表单标签，您需要将下面的标签库添加到jsp页面中

并检查是否将
springweb
依赖项添加到pom中。您需要按照
SpringFramework

您可以在jsp页面中引用以下代码作为
FORM
标记：

<form:form method="POST" commandName="customerForm">
    <table>
        <tr>
            <td>Hidden value :</td>
            <td><form:hidden path="secretValue" /></td>
        </tr>
        <tr>
            <td><input type="submit" /></td>
        </tr>
    </table>
</form:form>


隐藏值：
使用表单标签，您需要将下面的标签库添加到jsp页面中

并检查是否将
springweb
依赖项添加到pom中。您需要按照
SpringFramework

您可以在jsp页面中引用以下代码作为
FORM
标记：

<form:form method="POST" commandName="customerForm">
    <table>
        <tr>
            <td>Hidden value :</td>
            <td><form:hidden path="secretValue" /></td>
        </tr>
        <tr>
            <td><input type="submit" /></td>
        </tr>
    </table>
</form:form>


隐藏值：
问题在于Spring模块的应用程序版本不一致。请注意，
ExpressionEvaluationUtils
在Spring3中被弃用，并已从Spring4中删除

由于您在WebMVC模块中使用的是Spring3，而在其他模块中使用的是Spring4，所以很可能会出现此问题

尝试对所有Spring模块使用相同的版本，即
4.3.6.版本
。

问题在于您的应用程序中Spring模块的版本不一致。请注意，
ExpressionEvaluationUtils
在Spring3中被弃用，并已从Spring4中删除

由于您在WebMVC模块中使用的是Spring3，而在其他模块中使用的是Spring4，所以很可能会出现此问题

尝试对所有弹簧模块使用相同的版本，即
4.3.6.版本
。

在newEmployees方法中将“id”作为参数：

替换
公共字符串newEmployees（ModelMap ModelMap）{
具有 
公共字符串newEmployees（ModelMap ModelMap，@RequestParam（required=false）整数id）{

在newEmployees方法中使用“id”作为参数：

替换
公共字符串newEmployees（ModelMap ModelMap）{
具有 
公共字符串newEmployees（ModelMap ModelMap，@RequestParam（required=false）整数id）{

依赖关系确实存在。我提供了
pom.xml
文件以检查任何不一致性。问题肯定出在
标记上。即使我只放了like
//一些代码
我也会在项目中得到错误。使用
最终版本
而不是
RC快照
为什么使用
@requestparam
而不是
@modeldattribute
来获取控制器中的表单数据？确实存在
依赖项
。我提供了
pom.xml
文件以检查是否存在任何不一致性。问题肯定是
标记。即使我只放入like
//一些代码
，我也会在其中得到错误project.use
final releases
而不是
RC snapshots
为什么要使用
@requestparam
而不是
@modelattribute
来获取controller中的表单数据？我在项目中有
spring web
依赖项，稍后，在项目中提供了整个
pom.xml
文件。您可以吗看看有没有不一致的地方？现在，你可以发现我编辑了我的答案，现在，你可以在我的答案中找到
表单
标签的样本和参考代码，你可以根据你的使用进行修改。我在项目中有
spring web
依赖项，后来，在项目中提供了整个
pom.xml
文件。你能帮我吗您可以查看任何不一致的地方吗？现在，您可以发现我编辑了我的答案，现在，您可以在我的答案中找到
表单
标记的示例代码和参考代码，您可以根据使用情况进行修改。然后，您需要通过如下方式传递id来调用该页面：int值）然后，您需要通过传递id来调用该页面将此：int值）添加
@modeldattribute Employee Employee
中的
@modeldattribute Employee
方法作为参数添加
@modeldattribute Employee
中的
@Employee Employee
方法作为参数我预计这是正确的答案。我将在测试后接受答案。这确实是一个真正的帮助，我将进行更新我用于启动
Spring项目的模板
是的，这确实解决了。我将此属性用于设置依赖项的版本，这项工作很好。
4.3.6.RELEASE 4.2.3.RELEASE
稍后的版本显然适用于与安全相关的版本。我预计这是正确的答案我接受这个答案