BindingResult和普通的bean名称目标对象都不能作为请求属性- Spring
我收到了这个错误
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'command' available as request attribute这是堆栈跟踪
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:534)：java.lang.IllegalStateException: bean名称“org.apache.jasper.JasperException”的BindingResult或普通目标对象都不能作为请求属性org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) javax.servlet.http.HttpServlet使用。服务(HttpServlet.java:722)的根本原因java.lang.IllegalStateException:作为请求属性org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:178) org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:198) org.springframework.web.servlet.tags.form.LabelTag.autogenerateFor的bean名称“HttpServlet.java:722”的BindingResult和普通目标对象都不可用( org.springframework.web.servlet.tags.form.LabelTag.resolveFor(LabelTag.java:119) org.springframework.web.servlet.tags.form.LabelTag.writeTagContent(LabelTag.java:89) org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:102) org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:79) org.apache.jsp.student_jsp._jspx_meth_form_ )org.apache.jsp.student_jsp._jspx_meth_form_005fform_005f0(student_jsp.java:117) org.apache.jsp.student_jsp._jspService(student_jsp.java:79) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:722) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper. 005flabel_005f0(student_jsp.java:182)java:419) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:333) javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
这是我的web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>Spring MVC Form Handling</display-name>
<welcome-file-list>
<welcome-file>student.jsp</welcome-file>
</welcome-file-list>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>HelloWeb</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/HelloWeb-Servlet.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>
</web-app>
这是我的applicationContext.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<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-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<context:component-scan base-package="com.Prime" />
<mvc:annotation-driven/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/JSP/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
这是我的student.jsp文件
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
<html>
<head>
<title>Spring MVC Form Handling</title>
</head>
<body>
<h2>Student Information</h2>
<form:form modelAttribute="SpringWeb" method="POST" action="/HelloWeb/addStudent" commandName="SpringWeb">
<table>
<tr>
<td><form:label path="name">Name</form:label></td>
<td><form:input path="name" /></td>
</tr>
<tr>
<td><form:label path="age">Age</form:label></td>
<td><form:input path="age" /></td>
</tr>
<tr>
<td><form:label path="id">id</form:label></td>
<td><form:input path="id" /></td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="Submit"/>
</td>
</tr>
</table>
</form:form>
</body>
</html>
这是我的StudentController.java文件
package com.Prime;
import org.springframework.stereotype.Controller;
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;
import org.springframework.ui.ModelMap;
@Controller
public class StudentController {
@RequestMapping(value = "/student", method = RequestMethod.GET)
public ModelAndView student() {
return new ModelAndView("/student.jsp", "SpringWeb", new Student());
}
@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";
}
}
有人能帮我解决这个错误吗..。提前感谢
回答 3
Stack Overflow用户
发布于 2012-12-21 09:52:29
我试过你的配置，但没有得到你的错误。但我必须改变一些事情。
viewResolver正在将.jsp添加到视图名中。所以IMHO你应该改变
return new ModelAndView("/student.jsp", "SpringWeb", new Student());至
return new ModelAndView("student", "SpringWeb", new Student());因此，在学生之前删除jsp和"/“。
然后对我起作用了。但就像我说的，我没有明白你的错误
Stack Overflow用户
发布于 2012-12-21 08:40:14
编辑：
与我不同的是，您的异常声明为"bean名称‘命令’“。我认为您有一些失业问题，因为您在这里发布的代码与例外情况不匹配。
从表单标记中删除commandName属性，modelAttribute属性将被启用：
<form:form modelAttribute="SpringWeb" method="POST" action="/HelloWeb/addStudent" >在阅读了这个文章之后，它发现这不是解决您的问题的方法，但是无论如何，您不需要对它们进行两次专门化。
Stack Overflow用户
发布于 2013-02-06 01:20:45
调用/student所寻找的jsp位置是
/WEB-INF/JSP//student.jsp.jsp更改配置以匹配正确的url。
https://stackoverflow.com/questions/13986136
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