Question

我的代码有问题，请帮帮我，我有这样的错误既不是BindingResult也不是bean名称的明确目标对象＆＃39;命令＆＃39;可用作请求属性

controllercode：

public class RegistrationController  {
@RequestMapping(value="/reg" ,method = RequestMethod.POST)
public String reg(@ModelAttribute("aaa") User user,ModelMap model,BindingResult res){
    model.addAttribute("Fname",user.getFname());
    System.out.println(user.getFname());
    model.addAttribute("Lname", user.getLname());
    model.addAttribute("Email", user.getEmail());
    model.addAttribute("Pwd", user.getPwd());
    model.addAttribute("Phnum", user.getPhnum());
    return "NewFile";


  }
}

<form:form method="POST" action="/reg" name="aaa">
        <table>
            <tr>
                <td width="127"><form:label path="Fname">Employee Id:</form:label></td>
                <td width="102"><form:input path="Fname" /></td>
            </tr>
            <tr>
                <td width="127"><form:label path="Lname">Employee Id:</form:label></td>
                <td width="102"><form:input path="Lname" /></td>
            </tr>
            <tr>
                <td width="127"><form:label path="Email">Employee Id:</form:label></td>
                <td width="102"><form:input path="Email" /></td>
            </tr>
            <tr>
                <td width="127"><form:label path="Pwd">Employee Id:</form:label></td>
                <td width="102"><form:input path="Pwd" /></td>
            </tr>
            <tr>
                <td width="127"><form:label path="Phnum">Employee Id:</form:label></td>
                <td width="102"><form:input path="Phnum" /></td>
            </tr>

        </table>

Answer 1

尝试更改

<form:form method="POST" action="/reg" name="aaa">

到

<form:form method="POST" action="/reg" commandName="aaa">

或

<form:form method="POST" action="/reg" modelAttribute="aaa">

Answer 2

感谢您的宝贵建议我将其更改为modelattribute但现在也显示此错误org.apache.jasper.JasperException：在第15行处理JSP页面/jsp/registration.jsp时发生异常

java.lang.IllegalStateException：BindingResult和bean名称的简单目标对象＆＃39; aaa＆＃39;可用作请求属性

HTTP Status 500 - An exception occurred processing JSP page /jsp/registration.jsp at line 15

输入例外报告

message在第15行处理JSP页面/jsp/registration.jsp时发生异常

说明服务器遇到内部错误，导致无法完成此请求。

例外

org.apache.jasper.JasperException：在第15行处理JSP页面/jsp/registration.jsp时发生异常

12:   <form:form method="POST" action="/reg" modelAttribute="aaa">
13:             <table>
14:                 <tr>
15:                     <td width="127"><form:label path="Fname">Employee Id:</form:label></td>
16:                     <td width="102"><form:input path="Fname" /></td>
17:                 </tr>
18:                 <tr>

春季mvc注册计划中的一些错误

2 个答案: