Ошибка: org.apache.jasper.JasperException, как это исправить?

Question

Я encouter следующие ошибки:

null
edu.java.spring.controller.StudentController.listStudents(StudentController.java:86)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:497)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:749)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:689)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:938)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:870)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852)
javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:801)
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1126)
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1060)
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)
org.eclipse.jetty.server.Server.handle(Server.java:509)
org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:288)
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:240)
org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:539)
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:620)
org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:540)
java.lang.Thread.run(Thread.java:745)
null

Здесь подать JavaClazzWeb-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans-4.0.xsd 
     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context-4.0.xsd "> 
     <!-- <bean id="xsltViewResolver" class="org.springframework.web.servlet.view.xslt.XsltViewResolver"> 
      <property name="order" value="1"/> <property name="viewClass" value ="org.springframework.web.servlet.view.xslt.XsltView"/> 
      <property name="sourceKey" value="data"/> <property name="suffix" value=".xsl"/> 
      <property name="prefix" value="/xsl/"/> </bean> <bean id="studentDAO" class="edu.java.spring.dao.StudentDAO"> 
      <property name="dataSource" ref="dataSource"/> <property name ="insertSQL" 
      value="insert into student(name,age) values(?,?)"/> </bean> <bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean"> 
      <property name="targetObject"> <ref bean="studentDAO" /> </property> <property 
      name="targetMethod"> <value>createTableIfNotExist</value> </property> <property 
      name="arguments"> <list> <value>student</value> <value>create table student( 
      id bigint primary key generated always as identity(start with 1,increment 
      by 1), name varchar(1000), age integer) </value> </list> </property> </bean> --> 
     <context:component-scan base-package="edu.java.spring.controller" /> 
     <mvc:annotation-driven /> 
     <mvc:resources location="/avatar/" mapping="/avatar/**" /> 

     <bean 
      class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
      <property name="order" value="3" /> 
      <property name="suffix" value=".jsp" /> 
      <property name="prefix" value="/student/" /> 
     </bean> 
     <bean id="multipartResolver" 
      class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
      <property name="maxUploadSize" value="100000"></property> 
     </bean> 

     <bean id="xsltViewResolver" 
      class="org.springframework.web.servlet.view.ResourceBundleViewResolver"> 
      <property name="order" value="2" /> 
      <property name="basename" value="views" /> 
     </bean> 

     <bean id="tilesViewResolver" 
      class="org.springframework.web.servlet.view.UrlBasedViewResolver"> 
      <property name="order" value="1" /> 
      <property name="viewClass" 
       value="org.springframework.web.servlet.view.tiles3.TilesView" /> 
     </bean> 

     <bean id="tilesConfigurer" 
      class="org.springframework.web.servlet.view.tiles3.TilesConfigurer"> 
      <property name="definitions"> 
       <list> 
        <value>/WEB-INF/tiles/definitions.xml</value> 
       </list> 
      </property> 
     </bean> 

     <bean id="studentDao" class="edu.java.spring.dao.impl.StudentHibernateDaoImpl" /> 
     <bean id="sessionFactory" 
      class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> 
      <property name="dataSource" ref="dataSource" /> 

      <property name="hibernateProperties"> 
       <props> 
        <prop key="hibernate.dialect">org.hibernate.dialect.DerbyDialect</prop> 
        <prop key="hibernate.show_sql">true</prop> 
       </props> 

      </property> 
      <property name="packagesToScan" value="edu.java.spring.model" /> 
     </bean> 
     <bean id="dataSource" 
      class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
      <property name="driverClassName" value="org.apache.derby.jdbc.EmbeddedDriver" /> 
      <property name="url" 
       value="jdbc:derby:D:\PROJECTSPRING\studentdb;create=true" /> 
      <property name="username" value="" /> 
      <property name="password" value="" /> 
     </bean> 

     <bean 
      class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> 
      <property name="exceptionMappings"> 
       <props> 
        <prop key="java.lang.Exception">StudentError</prop> 
       </props> 
      </property> 

     </bean> 
     <bean id="studentMapper" class="edu.java.spring.model.StudentMapper" /> 
    </beans> 

Здесь файл StudentController

@Controller 
public class StudentController { 
// @RequestMapping(value = "/student/add", method = RequestMethod.POST) 
// public String addStudent(@Valid Student student,ModelMap model){ 
//  model.addAttribute("name", student.getName()); 
//  model.addAttribute("age", student.getAge()); 
//  return "StudentView"; 
// } 
    @RequestMapping(value="/student/form",method = RequestMethod.GET) 
    public ModelAndView student(){ 
     return new ModelAndView("StudentForm", "command", new Student()); 
    } 
    @Autowired 
    public StudentHibernateDaoImpl studentDAO; 

Здесь файл класса StudentHibernateDaoImpl

public class StudentHibernateDaoImpl implements StudentDAO { 
    @Autowired 
    public LocalSessionFactoryBean sessionFactory; 
    @Override 
    public void shutdown() { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public void insert(Student student) { 
     // TODO Auto-generated method stub 

    } 

    @Override 
    public List<Student> listStudents() { 
     // TODO Auto-generated method stub 
     Session session = sessionFactory.getObject().openSession(); 
     Query query = (Query) session.createQuery("from Student"); 
     try { 
      return (List<Student>)query.getResultList(); 
     } finally { 
      // TODO: handle finally clause 
      session.close(); 
     } 
    } 

Здесь файл класса StudentDao

public interface StudentDAO { 
    public void shutdown(); 
    public void insert(Student student); 
    public List<Student> listStudents(); 
    public Student loadStudent(int id); 
    public void update(Student student); 
    public void delete(Integer id); 
    public List<Student> searchStudent(String name); 


} 

Здесь файл pom.xml

<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/maven-v4_0_0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 
    <groupId>edu.java.spring</groupId> 
    <artifactId>springDAT-MVC</artifactId> 
    <packaging>war</packaging> 
    <version>1.0-SNAPSHOT</version> 
    <name>springDAT-MVC Maven Webapp</name> 
    <url>http://maven.apache.org</url> 
    <dependencies> 
    <dependency> 
     <groupId>junit</groupId> 
     <artifactId>junit</artifactId> 
     <version>3.8.1</version> 
     <scope>test</scope> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context</artifactId> 
     <version>4.0.3.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-context-support</artifactId> 
     <version>4.0.3.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-web</artifactId> 
     <version>4.0.3.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>org.springframework</groupId> 
     <artifactId>spring-webmvc</artifactId> 
     <version>4.0.3.RELEASE</version> 
    </dependency> 
    <dependency> 
     <groupId>javax.validation</groupId> 
     <artifactId>validation-api</artifactId> 
     <version>1.1.0.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-validator</artifactId> 
    <version>5.0.1.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>servlet-api</artifactId> 
     <version>2.5</version> 
    </dependency> 
    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-jdbc</artifactId> 
    <version>4.2.4.RELEASE</version> 
</dependency> 
    <dependency> 
     <groupId>org.apache.derby</groupId> 
     <artifactId>derby</artifactId> 
     <version>10.12.1.1</version> 
    </dependency> 
    <dependency> 
    <groupId>jstl</groupId> 
    <artifactId>jstl</artifactId> 
    <version>1.2</version> 
</dependency> 
    <dependency> 
     <groupId>org.codehaus.jackson</groupId> 
     <artifactId>jackson-mapper-asl</artifactId> 
     <version>1.9.13</version> 
    </dependency> 
    <dependency> 
     <groupId>com.lowagie</groupId> 
     <artifactId>itext</artifactId> 
    <version>4.2.2</version> 
    </dependency> 
    <dependency> 
     <groupId>org.apache.poi</groupId> 
     <artifactId>poi</artifactId> 
     <version>3.13</version> 
    </dependency> 
    <dependency> 
     <groupId>net.sf.jasperreports</groupId> 
     <artifactId>jasperreports</artifactId> 
     <version>5.5.2</version> 
    </dependency> 
    <dependency> 
    <groupId>org.apache.tiles</groupId> 
    <artifactId>tiles-extras</artifactId> 
    <version>3.0.5</version> 
</dependency> 
    <dependency> 
     <groupId>commons-fileupload</groupId> 
     <artifactId>commons-fileupload</artifactId> 
     <version>1.3.1</version> 
    </dependency> 

    <dependency> 
    <groupId>org.hibernate</groupId> 
    <artifactId>hibernate-core</artifactId> 
    <version>4.3.8.Final</version> 
</dependency> 


    <dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-orm</artifactId> 
    <version>4.0.5.RELEASE</version> 
</dependency> 








    </dependencies> 
    <build> 
    <finalName>springDAT-MVC</finalName> 
    <plugins> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-surefire-plugin</artifactId> 
       <version>2.12.4</version> 
       <configuration> 
        <skipTests>true</skipTests> 
        <argLine>-Xmx2524m</argLine> 
       </configuration> 
      </plugin> 

      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>3.1</version> 
       <configuration> 
        <source>1.8</source> 
        <target>1.8</target> 
        <encoding>UTF-8</encoding> 
        <fork>true</fork> 
        <compilerArgs> 
         <arg>-XDignore.symbol.file</arg> 
        </compilerArgs> 
       </configuration> 
      </plugin> 

      <plugin> 
       <groupId>org.eclipse.jetty</groupId> 
       <artifactId>jetty-maven-plugin</artifactId> 
       <version>9.3.0.M1</version> 
       <configuration> 
        <jvmArgs>-Xmx1048m -Xms536m 
         -XX:PermSize=128m -XX:MaxPermSize=512m</jvmArgs> 
        <reload>manual</reload> 
        <systemProperties> 
         <systemProperty> 
          <name>lib</name> 
          <value>${basedir}/target/spring-mvc/WEB-INF/lib</value> 
         </systemProperty> 
        </systemProperties> 
        <scanIntervalSeconds>3</scanIntervalSeconds> 
        <connectors> 
         <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector"> 
          <port>8080</port> 
          <maxIdleTime>60000</maxIdleTime> 
         </connector> 
        </connectors> 
        <contextPath>/</contextPath> 
        <webAppSourceDirectory>${basedir}/src/main/webapp</webAppSourceDirectory> 
        <webXml>${basedir}/src/main/webapp/WEB-INF/web.xml</webXml> 
        <classesDirectory>${basedir}/target/classes</classesDirectory> 
       </configuration> 
      </plugin> 

     </plugins> 

    </build> 
</project> 

Здесь файл Student

package edu.java.spring.model; 

import javax.persistence.Column; 
import javax.persistence.Entity; 
import javax.persistence.GeneratedValue; 
import javax.persistence.GenerationType; 
import javax.persistence.Table; 
import javax.persistence.UniqueConstraint; 
import javax.validation.constraints.Size; 
import javax.xml.bind.annotation.XmlAttribute; 
import javax.xml.bind.annotation.XmlElement; 
import javax.xml.bind.annotation.XmlRootElement; 

import org.hibernate.validator.constraints.NotBlank; 
import org.hibernate.validator.constraints.Range; 
@XmlRootElement(name="item") 
@Entity 
@Table(name = "student",uniqueConstraints={@UniqueConstraint(columnNames="Id")}) 
public class Student { 
// @NotBlank 
// @Size(min=2,max=100,message ="Age value is invalid") 
    private String name; 


    private int id; 
// @Range(min=1,max=150) 


private int age; 
    @XmlAttribute 
     @Id 

    @GeneratedValue(strategy = GenerationType.IDENTITY) 
    @Column(name ="id", unique=true,nullable =false) 
    public int getId() { 
     return id; 
    } 
    public void setId(int id) { 
     this.id = id; 
    } 
    @XmlElement 
    @Column(name = "Name",nullable = false,length = 200) 
    public String getName() { 
     return name; 
    } 
    public void setName(String name) { 
     this.name = name; 
    } 
    @XmlElement 
    @Column(name = "age",nullable = false) 
    public int getAge() { 
     return age; 
    } 
    public void setAge(int age) { 
     this.age = age; 
    } 


} 

Answer 1

Проблема, очевидно, с этой строкой

System.out.println6(exp.getMessage()+"<br/>"); 

Вы должны использовать System.out.println, не System.out.println6

System.out.println(exp.getMessage()+"<br/>");