Question

我知道在之前的主题中已经回答了这个问题，但在完成所有解决方案之后，我一直无法解决这个问题。

所以我正在使用spring＆amp;用mySQL数据库在hibernate之上的thymeleaf。我试图通过一个简单的表单将userlogin对象注册到数据库，但系统在运行时立即崩溃并继续显示错误：

BindingResult和bean名称'user'的普通目标对象都不可用作请求属性

注意*我可以使用相同的实现将俱乐部对象添加到数据库中，所以我想可能是与userlogin对象关联的额外变量？

首先发布，请放心！

这是我的控制器代码（后两种方法是userlogin相关的方法）：

package com.FYP.Club.controller;

@Controller
public class HomeController {
  @Autowired
    UserLoginRepository userRepository;

  @Autowired
        ClubRepository clubRepository;

    @RequestMapping(value="/registerclub", method=RequestMethod.GET)
    public String index(Club club) {
        return "clubindex";
    }

    @RequestMapping(value = "/club", method = RequestMethod.POST)
    public String addNewPost(@Valid Club club, Model model) {
        clubRepository.save(club);
        model.addAttribute("clubName", club.getClubName());
        return "clubresult";
    }


@RequestMapping(value="/register", method=RequestMethod.GET)
public String index(UserLogin user) {
    return "index";

}


@RequestMapping(value = "/", method = RequestMethod.POST)
public String addNewPost(@Valid UserLogin user, Model model) {
    user.setUserStatus(true);
    model.addAttribute("email", user.getEmail());
    return "result";
  }

}

以下是index.html页面，其中包含用户表单：

<h3>Register</h3>

<form action="#" th:action="@{/}" th:object="${user}" method="post">
    <table>
    <tr>
    <td>First name:</td>
            <td><input type="text" th:field="*{firstName}" /></td>
        </tr>
        <tr>
            <td>Last name:</td>
            <td><input type="text" th:field="*{lastName}" /></td>
        </tr>
        <tr>
            <td>Phone:</td>
            <td><input type="number" th:field="*{phone}" /></td>
        </tr>

        <tr>
            <td>Email:</td>

            <td><input type="text" th:field="*{email}" /></td>
        </tr>
            <tr>

            <td>Address:</td>
            <td><input type="text" th:field="*{address}" /></td>
        </tr>

        <tr>
            <td>Password:</td>
            <td><input type="text" th:field="*{password}" /></td>
        </tr>
        <tr>
            <td>UserType:</td>
            <td><input type="text" th:field="*{userType}" /></td>
        </tr>
        <tr>
            <td><button type="submit">Submit</button></td>
        </tr>

    </table>
</form>

</td>

以下是userlogin模型：

@Entity
public class UserLogin {


@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String firstName;
private String lastName;
private Long phone;
private String email;
private String address;
private String password;
private Boolean userStatus;
private String userType;


public UserLogin()
{

}

public UserLogin(Long id, String firstName, String lastName, Long phone,
        String email, String address, String password, Boolean userStatus,
        String userType) {
    super();
    this.id = id;
    this.firstName = firstName;
    this.lastName = lastName;
    this.phone = phone;
    this.email = email;
    this.address = address;
    this.password = password;
    this.userStatus = userStatus;
    this.userType = userType;
}

public String getUserType() {
    return userType;
}

public void setUserType(String userType) {
    this.userType = userType;
}

public Long getId() {
    return id;
}

public void setId(Long id) {
    this.id = id;
}

public String getFirstName() {
    return firstName;
}

public void setFirstName(String firstName) {
    this.firstName = firstName;
}

public String getLastName() {
    return lastName;
}

public void setLastName(String lastName) {
    this.lastName = lastName;
}

public Long getPhone() {
    return phone;
}

public void setPhone(Long phone) {
    this.phone = phone;
}

public String getEmail() {
    return email;
}

public void setEmail(String email) {
    this.email = email;
}

public String getAddress() {
    return address;
}

public void setAddress(String address) {
    this.address = address;
}

public String getPassword() {
    return password;
}

public void setPassword(String password) {
    this.password = password;
}

public Boolean getUserStatus() {
    return userStatus;
}

public void setUserStatus(Boolean userStatus) {
    this.userStatus = userStatus;
  }
}

Answer 1

您需要在使用之前添加UserLogin对象，如下所示。

@RequestMapping(value="/register", method=RequestMethod.GET)
public String index(Model model) {
    model.addAttribute("user", new UserLogin()); //add model to view


    return "index";

}

如果您正在使用@Valid Annotation，则需要捕获BindingResult变量中的错误，类似这样的

@RequestMapping(value = "/", method = RequestMethod.POST)
public String addNewPost(@Valid UserLogin user, Model model,
                         BindingResult errors) {

    user.setUserStatus(true);
    model.addAttribute("email", user.getEmail());
    return "result";
  }

第3轮BindingResult和bean名称'user'的普通目标对象都不可用作请求属性

1 个答案: