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我想将数据从表单发送到 PostgreSQL。当我通过表单发送数据时，休眠保存（通过 save() 方法）空白记录..我手动（用于测试）而不使用表单，然后一切正常。

Spitter.class （用户实体）

@Entity 
@Table(name="spitter")
public class Spitter implements Serializable {  

private static final long serialVersionUID = 829803238866007413L;

@Id 
//@SequenceGenerator(name = "hibernate_sequence")
@GeneratedValue(strategy=GenerationType.AUTO) @Column(name="spitter_id")
private Long id;
@Column(unique=true) @Size(min=3, max=20) @Pattern(regexp = "^[a-zA-Z0-9]+$", message="Nie poprawna nazwa uzytkownika.")
private String username;
@Size(min=5, max=15, message="Haslo musi miec minimum 5 znakow.")
private String password;
@Size(min=3, max=25, message="Blad w imieniu i nazwisku.")
private String fullName;
@OneToMany(mappedBy="spitter")
private List<Spittle> spittles;
@Email(message="Nie poprawny adres email.")
private String email;
private boolean updateByEmail;  

public Long getId() {
    return id;
}
public void setId(Long id) {
    this.id = id;
}
public String getUsername() {
    return username;
}
public void setUsername(String username) {
    this.username = username;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}
public String getFullName() {
    return fullName;
}
public void setFullName(String fullName) {
    this.fullName = fullName;
}
public List<Spittle> getSpittles() {
    return spittles;
}
public void setSpittles(List<Spittle> spittles) {
    this.spittles = spittles;
}
public String getEmail() {
    return email;
}
public void setEmail(String email) {
    this.email = email;
}
public void setUpdateByEmail(boolean updateByEmail) {
    this.updateByEmail = updateByEmail;
}

public boolean isUpdateByEmail() {
    return updateByEmail;
}

@Override
public boolean equals(Object obj) {
    Spitter other = (Spitter) obj;      
    return other.fullName.equals(fullName) && other.username.equals(username) && other.password.equals(password);
}

@Override
public int hashCode() {
    // TODO Auto-generated method stub
    return super.hashCode();
}
}

SpitterController.class createSpitterProfile - 显示表单 (edit.jsp) 并将模型对象 ( spitter) 发送到表单 addSpitterFromForm- 从表单接收绑定数据并将其保存到数据库并重定向到简单的用户配置文件 showSpitterProfile- 当然存在空模型对象异常

@Controller
@RequestMapping("/spitters")
public class SpitterController {

private final SpitterService spitterService;

@Inject   //@Autowired
public SpitterController(SpitterService spitterService) {
    this.spitterService = spitterService;
}
//...
@RequestMapping(method = RequestMethod.GET, params = "new")
public String createSpitterProfile(Model model) {
    model.addAttribute("spitter", new Spitter());
    return "spitters/edit";
}

@RequestMapping(method = RequestMethod.POST)
public String addSpitterFromForm(@Valid Spitter spitter, BindingResult bindingResult) {     
    if(bindingResult.hasErrors())
        return "spitters/edit";
    spitterService.saveSpitter(spitter);
    return "redirect:/spitters/" + spitter.getUsername();
}

@RequestMapping(value="/{username}", method = RequestMethod.GET)
public String showSpitterProfile(@PathVariable String username, Model model) {
    model.addAttribute(spitterService.getSpitter(username));
    return "spitters/view";
}

edit.jsp（新用户注册表单（Spitter））

<%@ taglib prefix="sf" uri="http://www.springframework.org/tags/form"%>
<%@ taglib prefix="s" uri="http://www.springframework.org/tags"%>

<div>
<h2>New account test</h2>

<sf:form method="POST" modelAttribute="spitter" 
     enctype="multipart/form-data">         
<fieldset> 
<table>
  <tr>
     <th><sf:label path="fullName">Full name:</sf:label></th>
     <td><sf:input path="fullName" size="15" /><br/>
     <sf:errors path="fullName" cssClass="error" />
     </td>
  </tr>
  <tr>
     <th><sf:label path="username">Username:</sf:label></th>
     <td><sf:input path="username" size="15" maxlength="15" />
          <small id="username_msg">No spaces, please.</small><br/>
        <sf:errors path="username" cssClass="error" />

      </td>
  </tr>
  <tr>
     <th><sf:label path="password">Password:</sf:label></th>
     <td><sf:password path="password" size="30" 
                        showPassword="true"/> 
         <small>6 characters or more (be tricky!)</small><br/>
         <sf:errors path="password" cssClass="error" />
        </td>
  </tr>

  <tr>
     <th><sf:label path="email">Email Address:</sf:label></th>

     <td><sf:input path="email" size="30"/> 
         <small>In case you forget something</small><br/>
         <sf:errors path="email" cssClass="error" />
        </td>
  </tr>      
  <tr>
     <th></th>
     <td>
        <sf:checkbox path="updateByEmail"/>
        <sf:label path="updateByEmail">Send me email updates!</sf:label>
     </td>
  </tr>
  <tr>
     <th></th>
     <td>           
        <input name="commit" type="submit" 
                value="I accept. Create my account." />
     </td>
  </tr>
 </table>
</fieldset>
</sf:form>
</div>

并将空白保存记录到 Postgres .. 在此处输入图像描述

4

2 回答 2

1

你有enctype="multipart/form-data你的表格，

检查您的 App-servlet.xml 中是否有类似的内容：

<bean id="multipartResolver" class= "org.springframework.web.multipart.commons.CommonsMultipartResolver" p:maxUploadSize="500000" />

于 2013-12-17T15:01:58.937 回答
1

尝试在此方法中添加@modelattribute。它填充获取所需的模型对象。

@RequestMapping(method = RequestMethod.POST)
public String addSpitterFromForm(**@ModelAttribute("spitter")** @Valid Spitter spitter, BindingResult bindingResult) {     
    if(bindingResult.hasErrors())
        return "spitters/edit";
    spitterService.saveSpitter(spitter);
    return "redirect:/spitters/" + spitter.getUsername();
}

并且只是为了检查它是否从表单中获取值，syso 一些值，如 syso(spitter.getUserName) 来检查值是否即将到来。

另外，我相信您正在创建一个构造函数并将服务传递给它，因此不需要@Inject

@Inject   //@Autowired///Why are you injecting it if it is a constructor?
public SpitterController(SpitterService spitterService) {
    this.spitterService = spitterService;
}
于 2013-09-11T15:55:58.823 回答