我正在使用spring和hibernate.i我正在遭遇这个问题。我不明白我的意思。帮助我！谢谢提前。我遭受了java.lang.IllegalStateException：我的项目中没有BindingResult和bean问题的普通目标对象。
Contact.jsp
<%@taglib uri="http://www.springframework.org/tags" prefix="spring"%>
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<head>
<title>Spring 3 MVC Series - Contact Manager | viralpatel.net</title>
</head>
<body>
<h2>Contact Manager</h2>
<form:form method="post" action="add" commandName="contact">
<table>
<tr>
<td><form:label path="firstname"><spring:message code="label.firstname"/></form:label></td>
<td><form:input path="firstname" /></td>
</tr>
<tr>
<td><form:label path="lastname"><spring:message code="label.lastname"/></form:label></td>
<td><form:input path="lastname" /></td>
</tr>
<tr>
<td><form:label path="email"><spring:message code="label.email"/></form:label></td>
<td><form:input path="email" /></td>
</tr>
<tr>
<td><form:label path="telephone"><spring:message code="label.telephone"/></form:label></td>
<td><form:input path="telephone" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="<spring:message code="label.addcontact"/>"/>
</td>
</tr>
</table>
</form:form>
<h3>Contacts</h3>
<c:if test="${!empty contactList}">
<table class="data">
<tr>
<th>Name</th>
<th>Email</th>
<th>Telephone</th>
<th> </th>
</tr>
<c:forEach items="${contactList}" var="contact">
<tr>
<td>${contact.lastname}, ${contact.firstname} </td>
<td>${contact.email}</td>
<td>${contact.telephone}</td>
<td><a href="delete/${contact.id}">delete</a></td>
</tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
spring-servlet.xml
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
<context:annotation-config />
<context:component-scan base-package="rugal.sample.core.controller.ContactController" />
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="messageSource"
class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="classpath:messages" />
<property name="defaultEncoding" value="UTF-8" />
</bean>
<!-- <bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/jdbc.properties" />-->
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
p:driverClassName="com.mysql.jdbc.Driver"
p:url="jdbc:mysql://localhost:3306/testdb" p:username="root"
p:password="john" />
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<tx:annotation-driven />
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
// its my controller class
package rugal.sample.core.controller;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
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;
import rugal.sample.core.form.Contact;
import rugal.sample.core.service.ContactService;
@Controller
public class ContactController {
@Autowired
private ContactService contactService;
@RequestMapping("/index")
public String listContacts(Map<String, Object> map) {
map.put("contact", new Contact());
map.put("contactList", contactService.listContact());
return "contact";
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String addContact(@ModelAttribute("contact")
Contact contact, BindingResult result) {
contactService.addContact(contact);
return "redirect:/index";
}
@RequestMapping("/delete/{contactId}")
public String deleteContact(@PathVariable("contactId")
Integer contactId) {
contactService.removeContact(contactId);
return "redirect:/index";
}
}
giving me this ERROR
org.apache.jasper.JasperException: An exception occurred processing JSP page /jsp/contact.jsp at line 16
13:
14: <table>
15: <tr>
16: <td><form:label path="firstname"><spring:message code="label.firstname"/></form:label></td>
17: <td><form:input path="firstname" /></td>
18: </tr>
19: <tr>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:553)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:452)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
root cause
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'contact' available as request attribute
org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:144)
org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor(LabelTag.java:130)
org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:120)
org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:90)
org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
org.apache.jsp.jsp.contact_jsp._jspx_meth_form_005flabel_005f0(contact_jsp.java:210)
org.apache.jsp.jsp.contact_jsp._jspx_meth_form_005fform_005f0(contact_jsp.java:132)
org.apache.jsp.jsp.contact_jsp._jspService(contact_jsp.java:84)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
答案 0 :(得分：1)
JSP中的表单标记正在尝试绑定到名为contact的bean：
<form:form method="post" action="add" commandName="contact">
但您的控制器不会公开它。
尝试将此添加到您的控制器：
@ModelAttribute("contact")
public Contact createModel() {
return new Contact();
}
答案 1 :(得分：0)
据我了解，您可能错过了将contact设置为控制器代码中的模型属性
你可以做这样的事情
public ModelAndView updateContact() {
ModelAndView mv = new ModelAndView("viewName");
mv.addAttribute("contact", new Contact());
return mv;
}
您也可以在form标签中使用modelAttribute而不是像这样的
命令<form:form modelAttribute = 'contact' ... >