Java 对象'中的字段错误;用户';在字段上';用户配置文件';:拒绝值[3];

Java 对象'中的字段错误;用户';在字段上';用户配置文件';:拒绝值[3];,java,spring,jsp,spring-mvc,jpa,Java,Spring,Jsp,Spring Mvc,Jpa,我已经下载了一个工作演示,在我运行它时,它工作得非常好。但是,当我刚刚开始使用注册页面的相同页面和功能时,我提交表单时,我遇到了错误: [Field error in object 'user' on field 'userProfiles': rejected value [3]; codes [typeMismatch.user.userProfiles,typeMismatch.userProfiles,typeMismatch.java.util.Set,typeMismatch]; a

我已经下载了一个工作演示,在我运行它时,它工作得非常好。但是,当我刚刚开始使用注册页面的相同页面和功能时,我提交表单时,我遇到了错误:

[Field error in object 'user' on field 'userProfiles': rejected value [3]; codes [typeMismatch.user.userProfiles,typeMismatch.userProfiles,typeMismatch.java.util.Set,typeMismatch]; arguments 
    [org.springframework.context.support.DefaultMessageSourceResolvable: codes [user.userProfiles,userProfiles]; arguments []; default message [userProfiles]]; default message 
[Failed to convert property value of type 'java.lang.String' to required type 'java.util.Set' for property 'userProfiles'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type 
[com.idev.tpt.model.UserProfile] for property 'userProfiles[0]': no matching editors or conversion strategy found]]
JSP文件

<form:form id="userForm" action="newuser" modelAttribute="user">
    <form:input type="hidden" path="id" id="id" />
    <div class="form-group">
        <form:input type="text" path="firstName" id="firstName" placeholder="First Name" class="form-control input-sm" />
    </div>
    <div class="form-group">
        <form:input type="text" path="lastName" id="lastName" placeholder="Last Name" class="form-control input-sm" />
    </div>
    <div class="form-group">
        <c:choose>
            <c:when test="${edit}">
                <form:input type="text" path="ssoId" id="ssoId" placeholder="SSO ID" class="form-control input-sm" disabled="true" />
            </c:when>
            <c:otherwise>
                <form:input type="text" path="ssoId" id="ssoId" placeholder="SSO ID" class="form-control input-sm" />
                <div class="has-error">
                    <form:errors path="ssoId" class="help-inline" />
                </div>
            </c:otherwise>
        </c:choose>
    </div>
    <div class="form-group">
        <form:input type="password" path="password" id="password" placeholder="password" class="form-control input-sm" />
        <div class="has-error">
            <form:errors path="password" class="help-inline" />
        </div>
    </div>
    <div class="form-group">
        <form:input type="text" path="email" id="email" placeholder="email" class="form-control input-sm" />
        <div class="has-error">
            <form:errors path="email" class="help-inline" />
        </div>
    </div>

    <div class="form-group">
        <form:select path="userProfiles" items="${roles}" multiple="true" itemValue="id" itemLabel="type" class="form-control input-sm" />
    </div>
    <!-- <div class="form-group">
                                            <textarea class="form-control" id="prop_note" name="note" placeholder="Note" ></textarea>
                                        </div> -->
    <p class="demo-button btn-toolbar">
        <span id="warningLbl" class="label label-warning" style="display: none;"></span>
        <button id="propAddBtn" type="submit" class="btn btn-primary pull-right">Save</button>
        <button id="propUpdateBtn" type="submit" class="btn btn-primary pull-right" style="display: none;">Update</button>&nbsp;
        <button id="propClearBtn" type="button" class="btn btn-primary pull-right" style="display: none;">Clear</button>
    </p>
    <br>
</form:form>
@RequestMapping(value = { "/newuser" }, method = RequestMethod.GET)
    public String newUser(ModelMap model) {
        User user = new User();
        model.addAttribute("user", user);
        model.addAttribute("edit", false);
        model.addAttribute("roles", userProfileService.findAll());
        model.addAttribute("loggedinuser", getPrincipal());
        return "registration";
    }

    /**
     * This method will be called on form submission, handling POST request for
     * saving user in database. It also validates the user input
     */
    @RequestMapping(value = { "/newuser" }, method = RequestMethod.POST)
    public String saveUser(@Valid User user, BindingResult result,
            ModelMap model) {
        if (result.hasErrors()) {
            return "registration";
        }

        if(!userService.isUserSSOUnique(user.getId(), user.getSsoId())){
            FieldError ssoError =new FieldError("user","ssoId",messageSource.getMessage("non.unique.ssoId", new String[]{user.getSsoId()}, Locale.getDefault()));
            result.addError(ssoError);
            return "registration";
        }

        userService.saveUser(user);

        model.addAttribute("success", "User " + user.getFirstName() + " "+ user.getLastName() + " registered successfully");
        model.addAttribute("loggedinuser", getPrincipal());
        //return "success";
        return "registrationsuccess";
    }
型号

package com.websystique.springmvc.model;

import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.Table;

import org.hibernate.validator.constraints.NotEmpty;

@SuppressWarnings("serial")
@Entity
@Table(name="APP_USER")
public class User implements Serializable{

    @Id @GeneratedValue(strategy=GenerationType.IDENTITY)
    private Integer id;

    @NotEmpty
    @Column(name="SSO_ID", unique=true, nullable=false)
    private String ssoId;

    @NotEmpty
    @Column(name="PASSWORD", nullable=false)
    private String password;

    @NotEmpty
    @Column(name="FIRST_NAME", nullable=false)
    private String firstName;

    @NotEmpty
    @Column(name="LAST_NAME", nullable=false)
    private String lastName;

    @NotEmpty
    @Column(name="EMAIL", nullable=false)
    private String email;

    @NotEmpty
    @ManyToMany(fetch = FetchType.LAZY)
    @JoinTable(name = "APP_USER_USER_PROFILE", 
             joinColumns = { @JoinColumn(name = "USER_ID") }, 
             inverseJoinColumns = { @JoinColumn(name = "USER_PROFILE_ID") })
    private Set<UserProfile> userProfiles = new HashSet<UserProfile>();

    public Integer getId() {
        return id;
    }

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

    public String getSsoId() {
        return ssoId;
    }

    public void setSsoId(String ssoId) {
        this.ssoId = ssoId;
    }

    public String getPassword() {
        return password;
    }

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

    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 String getEmail() {
        return email;
    }

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

    public Set<UserProfile> getUserProfiles() {
        return userProfiles;
    }

    public void setUserProfiles(Set<UserProfile> userProfiles) {
        this.userProfiles = userProfiles;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((id == null) ? 0 : id.hashCode());
        result = prime * result + ((ssoId == null) ? 0 : ssoId.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (!(obj instanceof User))
            return false;
        User other = (User) obj;
        if (id == null) {
            if (other.id != null)
                return false;
        } else if (!id.equals(other.id))
            return false;
        if (ssoId == null) {
            if (other.ssoId != null)
                return false;
        } else if (!ssoId.equals(other.ssoId))
            return false;
        return true;
    }

    /*
     * DO-NOT-INCLUDE passwords in toString function.
     * It is done here just for convenience purpose.
     */
    @Override
    public String toString() {
        return "User [id=" + id + ", ssoId=" + ssoId + ", password=" + password
                + ", firstName=" + firstName + ", lastName=" + lastName
                + ", email=" + email + "]";
    }

}
用户配置文件转换器

package com.websystique.springmvc.converter;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.convert.converter.Converter;
import org.springframework.stereotype.Component;

import com.websystique.springmvc.model.UserProfile;
import com.websystique.springmvc.service.UserProfileService;

/**
 * A converter class used in views to map id's to actual userProfile objects.
 */
@Component
public class RoleToUserProfileConverter implements Converter<Object, UserProfile>{

    static final Logger logger = LoggerFactory.getLogger(RoleToUserProfileConverter.class);

    @Autowired
    UserProfileService userProfileService;

    /**
     * Gets UserProfile by Id
     * @see org.springframework.core.convert.converter.Converter#convert(java.lang.Object)
     */
    public UserProfile convert(Object element) {
        Integer id = Integer.parseInt((String)element);
        UserProfile profile= userProfileService.findById(id);
        logger.info("Profile : {}",profile);
        return profile;
    }

}
包com.websystique.springmvc.converter;
导入org.slf4j.Logger;
导入org.slf4j.LoggerFactory;
导入org.springframework.beans.factory.annotation.Autowired;
导入org.springframework.core.convert.converter.converter;
导入org.springframework.stereotype.Component;
导入com.websystemque.springmvc.model.UserProfile;
导入com.websystique.springmvc.service.UserProfileService;
/**
*视图中用于将id映射到实际userProfile对象的转换器类。
*/
@组成部分
公共类RoleToUserProfileConverter实现转换器{
静态最终记录器Logger=LoggerFactory.getLogger(RoleToUserProfileConverter.class);
@自动连线
UserProfileService UserProfileService;
/**
*按Id获取用户配置文件
*@参见org.springframework.core.convert.converter.converter#convert(java.lang.Object)
*/
公共用户配置文件转换(对象元素){
整数id=Integer.parseInt((字符串)元素);
UserProfile profile=userProfileService.findById(id);
info(“Profile:{}”,Profile);
回报曲线;
}
}
已更新


还有一件事,当我使用model getter方法getUserProfiles()打印表单数据时,我得到的是空白数据,因此我认为它不会绑定所选的值。但是我打印的任何其他列都会完美绑定。

在您的评论之后,我更新了我的回复:

问题可能出在JSP代码中。当应用程序调用控制器中的
saveUser()
方法时,将创建一个新的用户对象。但由于您在用户对象中键入了
UserProfile
,因此应用程序必须知道如何从字符串创建
UserProfile
(从
传递时)

您可以添加一个从字符串到
UserProfile
的自定义转换器,或者使用Java标准类型创建一个
UserDTO
类,并在控制器保存操作中使用它。代码类似于:

public String saveUser(@Valid UserDTO dto, ...) {
    User user = createUserFromDTO(dto);
    userService.saveUser(user);
}

如果定义了转换器,请检查是否在应用程序配置期间将其添加到
FormatterRegistry


另外,请确保使用JPA注释正确定义了
UserProfile
实体。

谢谢您的回复。正如我在问题中提到的,我有一个工作演示,而且我使用了相同的文件副本粘贴到新项目,我面临一个问题。对于您的建议,我使用了与我在工作演示中使用的相同的用户配置文件,我没有更改任何内容。尝试根据您的评论完善我的答案。请查看编辑后的问题我添加了我的用户配置文件classI我认为问题不在JPA中。它在JSP端。尝试保存用户时是否显示错误?有关详细信息,请参阅我的更新答案。请共享完整的stacktrace。1。您还可以共享${roles}的值吗?2.能否尝试删除select标记的“多个”属性?3.如果仍然不起作用,请尝试使用path='userProfile[0]'而不使用'multiple'属性。您好,@sbsatter和NKR请查看讨论我已将所有详细信息分解到那里,并且我已通过再次集成演示解决了我的问题。现在我的演示运行得非常好。
public String saveUser(@Valid UserDTO dto, ...) {
    User user = createUserFromDTO(dto);
    userService.saveUser(user);
}