JSP IllegalStateException и JasperException
432
14 января 2018, 04:59
Пишу crud приложение по примерам из открытых источников. При открытии моего единственного jsp файла. Вероятно, ошибка кроется где-то в контроллере или конфигурационных файлах, но самостоятельно выявить не смог
Код ошибки:
HTTP Status 500 – Internal Server Error
Type Exception Report
Message An exception occurred processing JSP page [/person.jsp] at line [39]
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.apache.jasper.JasperException: An exception occurred processing JSP page [/person.jsp] at line [39]
36: </c:if>
37: <tr>
38: <td>
39: <form:label path="name">
40: <spring:message text="Name"/>
41: </form:label>
42: </td>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:584)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
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:742)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Root Cause
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'person' available as request attribute
person.jsp:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<%@ page session="false" %>
<html>
<head>
<title>Person Page</title>
<style type="text/css">
.tg {border-collapse:collapse;border-spacing:0;border-color:#ccc;}
.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#ccc;color:#333;background-color:#fff;}
.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:#ccc;color:#333;background-color:#f0f0f0;}
.tg .tg-4eph{background-color:#f9f9f9}
</style>
</head>
<body>
<h1>
Add a Person
</h1>
<c:url var="addAction" value="/person/add" >
<form:form action="${addAction}" commandName="person">
<table>
<c:if test="${!empty person.name}">
<tr>
<td>
<form:label path="id">
<spring:message text="ID"/>
</form:label>
</td>
<td>
<form:input path="id" readonly="true" size="8" disabled="true" />
<form:hidden path="id" />
</td>
</tr>
</c:if>
<tr>
<td>
<form:label path="name">
<spring:message text="Name"/>
</form:label>
</td>
<td>
<form:input path="name" />
</td>
</tr>
<tr>
<td>
<form:label path="country">
<spring:message text="Country"/>
</form:label>
</td>
<td>
<form:input path="country" />
</td>
</tr>
<tr>
<td colspan="2">
<c:if test="${!empty person.name}">
<input type="submit"
value="<spring:message text="Edit Person"/>" />
</c:if>
<c:if test="${empty person.name}">
<input type="submit"
value="<spring:message text="Add Person"/>" />
</c:if>
</td>
</tr>
</table>
</form:form>
</c:url>
<br>
<h3>Persons List</h3>
<c:if test="${!empty listPersons}">
<table class="tg">
<tr>
<th width="80">Person ID</th>
<th width="120">Person Name</th>
<th width="120">Person Country</th>
<th width="60">Edit</th>
<th width="60">Delete</th>
</tr>
<c:forEach items="${listPersons}" var="person">
<tr>
<td>${person.id}</td>
<td>${person.name}</td>
<td>${person.country}</td>
<td><a href="<c:url value='/edit/${person.id}' />" >Edit</a></td>
<td><a href="<c:url value='/remove/${person.id}' />" >Delete</a></td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
PersonController.java:
package com.ma3stro.crudperson.controller;
import com.ma3stro.crudperson.model.Person;
import com.ma3stro.crudperson.service.PersonService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class PersonController {
private PersonService service;
@Autowired(required=true)
public void setService(PersonService service) {
this.service = service;
}
@RequestMapping(value = "/persons", method = RequestMethod.GET)
public String listPersons(Model model) {
model.addAttribute("person", new Person());
model.addAttribute("listPersons", service.listPersons());
return "person";
}
//add and update
@RequestMapping(value = "/person/add", method = RequestMethod.POST)
public String addPerson(@ModelAttribute("person") Person p) {
if(p.getId() == 0)
service.addPerson(p);
else
service.updatePerson(p);
return "redirect:/persons";
}
@RequestMapping(value = "/remove/{id}")
public String removePerson(@PathVariable("id") int id) {
service.removePerson(id);
return "redirect:/persons";
}
@RequestMapping("/edit/{id}")
public String editPerson(@PathVariable("id") int id, Model model) {
model.addAttribute("person", service.getPersonById(id));
model.addAttribute("listPersons", service.listPersons());
return "person";
}
}
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
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/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing
infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving
up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<beans:property name="driverClassName" value="com.mysql.jdbc.Driver" />
<beans:property name="url"
value="jdbc:mysql://localhost:3306/person" />
<beans:property name="username" value="root" />
<beans:property name="password" value="root" />
</beans:bean>
<!-- Hibernate 4 SessionFactory Bean definition -->
<beans:bean id="hibernate4AnnotatedSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource" />
<beans:property name="annotatedClasses">
<beans:list>
<beans:value>com.ma3stro.crudperson.model.Person</beans:value>
</beans:list>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
</beans:prop>
<beans:prop key="hibernate.show_sql">true</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<beans:bean id="personDAO" class="com.ma3stro.crudperson.repository.PersonRepositoryImpl">
<beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>
<!--<beans:bean id="personService" class="com.ma3stro.crudperson.service.PersonServiceImpl">-->
<!--<beans:property name="personDAO" ref="personDAO"></beans:property>-->
<!--</beans:bean>-->
<context:component-scan base-package="com.ma3stro.crudperson.controller" />
<context:component-scan base-package="com.ma3stro.crudperson.repository" />
<context:component-scan base-package="com.ma3stro.crudperson.service" />
<tx:annotation-driven transaction-manager="transactionManager"/>
<beans:bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>
</beans:beans>
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