Bean名称“所有者”的BindingResult和普通目标对象都不能用作请求属性

Question

I am trying to insert data's into database using Spring,Hibernate and MySql. 我正在尝试使用Spring，Hibernate和MySql将数据插入数据库。 I am getting the following error while inserting data into database "Neither BindingResult nor plain target object for bean name 'owner' available as request attribute" . 在将数据插入数据库“ Bean名称'owner'的BindingResult或普通目标对象都不能用作请求属性”时，出现以下错误。 I tried all possible solutions available but couldn't clear it. 我尝试了所有可能的解决方案，但无法清除。

This is my controller 这是我的控制器

@Controller
public class DataOwnerRegController {

@Autowired(required = true)
DataService dataService;

@RequestMapping(value="/DataOwnerReg",method = RequestMethod.POST)
public String getForm(@ModelAttribute("owner") Model model )
{
        model.addAttribute("owner", new Owner());
        return "DataOwnerReg";
}

@RequestMapping(value = "/DataOwnerReg")
public ModelAndView registeruser(@ModelAttribute("owner") Owner owner, BindingResult result){
    ModelAndView modelAndView = new ModelAndView("DataOwnerReg");
    dataService.insertRow(owner);
    return modelAndView;
  }
}

My View 我的观点

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"      "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>DATA OWNER REGISTRATION</title>
<link href="<c:url value="/resources/theme/css/bootstrap.css"/>"  rel="stylesheet" >
<link href="<c:url value="/resources/theme/css/style.css"/>" rel="stylesheet">
<script src="<c:url value="/resources/theme/js/jquery-2.1.4.min.js"/>">  </script>
<script src="<c:url value="/resources/theme/js/bootstrap.mi.js"/>"></script>
<link href='https://fonts.googleapis.com/css?family=Raleway:300' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Bangers' rel='stylesheet' type='text/css'>
</head>
<body class="body-image">
  <div>
    <nav style="background-color:transparent;border:none" class="navbar navbar-default">
    <div class="container">
        <ul class="nav navbar-nav">
             <li><a style="font-family: Raleway,sans-serif;color:white;font-size:15px;font-weight:600" href="<c:url value="/"/>">HOME</a></li>
             <li><a style="font-family: Raleway,sans-serif;color:white;font-size:15px;font-weight:600" href="<c:url value="/DataOwner"/>">DATAOWNER</a></li>
             <li><a style="font-family: Raleway,sans-serif;color:white;font-size:15px;font-weight:600" href="<c:url value="/DataOwner"/>">DATA CENTER</a></li>
             <li><a style="font-family: Raleway,sans-serif;color:white;font-size:15px;font-weight:600" href="<c:url value="/DataOwner"/>">KEY DISTRIBUTION</a></li>
             <li><a style="font-family: Raleway,sans-serif;color:white;font-size:15px;font-weight:600" href="<c:url value="/DataOwner"/>">ADMINISTRATOR</a>  </li>
            </ul>
        </div>
     </nav>
  </div>
  <div class="container">
  <div class="border">
     <form:form  modelAttribute="owner" method="Post" action="/DataOwnerReg">
    <h3 style="text-align:center">Data Owner Registration</h3>
    <h2 style="text-align:center">${message}</h2>
    <hr style="width:25%"/>
    <div class="formation">
        <h4>Username:</h4>  
        <div class="input-group">    
             <form:input type="text" class="form-control" style="font-family:Raleway,sans-serif;height:40px" placeholder="Enter the Username" required="" path="Username" /><div class="input-group-addon"><span class="glyphicon glyphicon-user" aria-hidden="true"></span></div>
        </div>     
             <h4>Password:</h4> 
         <div class="input-group">
             <form:input type="password" class="form-control" style="font-family:Raleway,sans-serif;height:40px" placeholder="Enter the Password" required="" path="Password"/><div class="input-group-addon"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span></div>
         </div>
             <h4>Confirm Password:</h4> 
         <div class="input-group">
             <form:input type="password" class="form-control" style="font-family:Raleway,sans-serif;height:40px" placeholder="Repeat Password" required="" path="CPassword" /><div class="input-group-addon"><span class="glyphicon glyphicon-lock" aria-hidden="true"></span></div>
         </div>
         <h4>Email Address:</h4>    
         <div class="input-group">   
             <form:input type="email" class="form-control" style="font-family:Raleway,sans-serif;height:40px" placeholder="me@example.com" required="" path="Email" /><div class="input-group-addon"><span class="glyphicon glyphicon-envelope" aria-hidden="true"></span></div>
         </div> 
             <h4>Mobile Number:</h4>    
         <div class="input-group">   
             <form:input type="text" class="form-control" style="font-family:Raleway,sans-serif;height:40px" placeholder="10 Digit Mobile Number" required="" path="Email" /><div class="input-group-addon"><span class="glyphicon glyphicon-pencil" aria-hidden="true"></span></div>
         </div>     
         <div>
            <input type="submit" style="width:150px;height:45px;margin-top:30px;font-family:Raleway,sans-serif" class="btn btn-success" value="Register"/>
         </div>
         <br/>
     </div>
         </form:form>     
    </div>
   </div>
 </body>
</html>

Please Help in this. 请帮忙。

Thanks in advance 提前致谢

Answer 1

There are a couple things wrong with your controller 您的控制器有几处错误

First you have the @ModelAttribute on a method argument of the type Model which you shouldn't do. 首先，在不应该使用的Model类型的方法参数上具有@ModelAttribute 。 Next the method you expect to be invoked on a GET request is going to be invoked on a POST request so basically there will be no model. 接下来，您希望在GET请求上调用的方法将在POST请求上调用，因此基本上没有模型。 Finally in your method that should handle the POST request you are returning a ModelAndView but with an empty model, so at that point there is no model anymore and no Owner object.). 最后，在应该处理POST请求的方法中，您返回的是ModelAndView但模型为空，因此，此时不再有模型，也没有Owner对象。）

I would suggest to fix your controller in the following way 我建议以以下方式修复您的控制器

@Controller
@RequestMapping("/DataOwnerReg")
public class DataOwnerRegController {

    private final DataService dataService;

    @Autowired
    public DataOwnerRegController(DataService DataService) {
      this.dataService=dataService;
    }

    @ModelAttribute
    public Owner owner() {
      return new Owner();
    }

    @RequestMapping(method = RequestMethod.GET)
    public String get() {        
        return "DataOwnerReg";
    }

    @RequestMapping(method = RequestMethod.POST)
    public String registeruser(@ModelAttribute("owner") Owner owner, BindingResult result){
        dataService.insertRow(owner);
        return "DataOwnerReg";
    }
}

Bean名称“所有者”的BindingResult和普通目标对象都不能用作请求属性

问题描述

1 个解决方案

解决方案1
0 已采纳 2015-12-14 12:34:18

Bean名称“所有者”的BindingResult和普通目标对象都不能用作请求属性

问题描述

1 个解决方案

解决方案1 0 已采纳 2015-12-14 12:34:18

解决方案1
0 已采纳 2015-12-14 12:34:18