は、企業が外国企業

Question

を持っているのAjaxを使って春のフォームを提出してくださいここに私のエンティティです：

@RequestMapping(value = "/save.html", params = "json", method = RequestMethod.POST) 
    public @ResponseBody Map<String, ? extends Object> saveJSON(@RequestBody License license, HttpServletRequest request, HttpServletResponse response) 
    { 
    Map<String, String> validationMessages = new HashMap<String, String>(); 
    for (FieldError error : getFieldErrors(license)) 
    { 
     validationMessages.put(error.getField(), error.getDefaultMessage()); 
    } 

    Set<ConstraintViolation<License>> constraintViolations = validator.validate(license); 
    if (!validationMessages.isEmpty() || !constraintViolations.isEmpty()) 
    { 
     for (ConstraintViolation<License> constraintViolation : constraintViolations) 
     { 
     String violationMessage = constraintViolation.getMessage(); 

     try 
     { 
      violationMessage = messageSource.getMessage(constraintViolation.getConstraintDescriptor().getAnnotation().annotationType().getSimpleName() + ".license." + constraintViolation.getPropertyPath().toString(), null, null); 
     } 
     catch (Exception e) 
     { 
     } 

     validationMessages.put(constraintViolation.getPropertyPath().toString(), violationMessage); 
     } 

     return Collections.singletonMap("validationMessages", validationMessages); 
    } 

    service.save(license); 
    return Collections.singletonMap("redirect", request.getContextPath() + "/index.html"); 
    } 

    @RequestMapping(value = "/save.html", method = RequestMethod.POST) 
    public String save(@ModelAttribute("license") @Valid License license, BindingResult result, Map<String, Object> map) 
    { 
    for (FieldError error : getFieldErrors(license)) 
    { 
     result.addError(error); 
    } 

    if (result.hasErrors()) 
    { 
     map.put("softwareList", softwareService.list()); 
     map.put("licenseTypeList", licenseTypeService.list()); 
     map.put("licenseClassList", licenseClassService.list()); 
     map.put("licenseMetricList", licenseMetricService.list()); 
     map.put("locationList", locationService.list()); 
     return "license.form"; 
    } 

    service.save(license); 
    return "redirect:/index.html"; 
    } 

万全を期すために、ここではフォームがあります：

<c:url value="/licenses/save.html" var="formAction" /> 
    <form:form modelAttribute="license" action="${formAction}" method="post"> 
    <form:errors path="*" cssClass="error" element="div" /> 
    <form:hidden path="id" /> 
    <div> 
     <form:label path="software.id">Software*:</form:label> 
     <form:select path="software.id" items="${softwareList}" itemValue="id" itemLabel="title" /> 
    </div> 
    <div> 
     <form:label path="key">License key*:</form:label> 
     <form:input path="key" /> 
    </div> 
    <div> 
     <form:label path="users">Installied at:</form:label> 
     <form:input path="users" /> 
    </div> 
    <div> 
     <form:label path="licenseType">Type*:</form:label> 
     <form:select id="licenseType" path="licenseType.id" items="${licenseTypeList}" itemValue="id" itemLabel="title" /> 
    </div> 
    <div> 
     <span id="licenseType1" class="typeAttr"> 
     <form:label path="volume">Volume*:</form:label> 
     <form:input type="number" path="volume" /> 
     </span> 
     <span id="licenseType2" class="typeAttr"> 
     <form:label path="location">Location*:</form:label> 
     <form:select path="location.id" items="${locationList}" itemValue="id" itemLabel="title" /> 
     </span> 
     <span id="licenseType3" class="typeAttr"> 
     <form:label path="from">Valid from*:</form:label> 
     <form:input type="date" path="from" /> 
     <form:label path="to">to*:</form:label> 
     <form:input type="date" path="to" /> 
     </span> 
    </div> 
    <div> 
     <form:label path="licenseClass">Class*:</form:label> 
     <form:select path="licenseClass.id" items="${licenseClassList}" itemValue="id" itemLabel="title" /> 
    </div> 
    <div> 
     <form:label path="licenseMetric">Metric*:</form:label> 
     <form:select path="licenseMetric.id" items="${licenseMetricList}" itemValue="id" itemLabel="title" /> 
    </div> 
    <input type="submit" value="Submit" /> 
    </form:form> 

@Entity 
@Table(name = "tbl_license") 
public class License implements Serializable 
{ 
    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue 
    @Column(name = "id", nullable = false, columnDefinition = "serial") 
    private int id; 

    @Column(name = "key", nullable = false, columnDefinition = "text") 
    private String key; 

    @Column(name = "users", columnDefinition = "text") 
    private String users; 

    @Transient 
    private final SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yyyy"); 

    @Column(name = "valid_from") 
    @Temporal(TemporalType.DATE) 
    private Date from; 

    @Column(name = "valid_to") 
    @Temporal(TemporalType.DATE) 
    private Date to; 

    @Column(name = "volume") 
    private Integer volume; 

    @Column(name = "SSL", columnDefinition = "bool default false") 
    private boolean SSL = false; 

    @ManyToOne 
    @JoinColumn(name = "software_id", columnDefinition = "int") 
    @ForeignKey(name = "tbl_software_fkey") 
    private Software software; 

    @ManyToOne 
    @JoinColumn(name = "license_type_id", columnDefinition = "int") 
    @ForeignKey(name = "tbl_license_type_fkey") 
    private LicenseType licenseType; 

    @ManyToOne 
    @JoinColumn(name = "license_class_id", columnDefinition = "int") 
    @ForeignKey(name = "tbl_license_class_fkey") 
    private LicenseClass licenseClass; 

    @ManyToOne 
    @JoinColumn(name = "license_metric_id", columnDefinition = "int") 
    @ForeignKey(name = "tbl_license_metric_fkey") 
    private LicenseMetric licenseMetric; 

    @ManyToOne 
    @JoinColumn(name = "location_id", columnDefinition = "int") 
    @ForeignKey(name = "tbl_location_fkey") 
    private Location location; 

    @OneToMany(fetch = FetchType.LAZY, mappedBy = "id.license"/*, cascade = { CascadeType.REMOVE }, orphanRemoval = true*/) 
    private List<LicenseUserAlert> alerts; 

    public int getId() 
    { 
    return id; 
    } 

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

    public String getKey() 
    { 
    return key; 
    } 

    public void setKey(String key) 
    { 
    this.key = key; 
    } 

    public String getUsers() 
    { 
    return users; 
    } 

    public void setUsers(String users) 
    { 
    this.users = users; 
    } 

    public String getFrom() 
    { 
    if (from == null) 
    { 
     return null; 
    } 

    return dateFormat.format(from); 
    } 

    public Date getFromDate() 
    { 
    return from; 
    } 

    public void setFrom(String from) 
    { 
    try 
    { 
     this.from = dateFormat.parse(from); 
    } 
    catch (ParseException e) 
    { 
     this.from = null; 
    } 
    } 

    public String getTo() 
    { 
    if (to == null) 
    { 
     return null; 
    } 

    return dateFormat.format(to); 
    } 

    public Date getToDate() 
    { 
    return to; 
    } 

    public void setTo(String to) 
    { 
    try 
    { 
     this.to = dateFormat.parse(to); 
    } 
    catch (ParseException e) 
    { 
     this.to = null; 
    } 
    } 

    @Transient 
    public Long getRemaining() 
    { 
    if (from == null || to == null) 
    { 
     return null; 
    } 

    Date now = new Date(); 
    Date fromDate = from; 
    Date toDate = to; 

    if (fromDate.before(now)) 
    { 
     fromDate = now; 
    } 

    return toDate.getTime() - fromDate.getTime(); 
    } 

    public int getVolume() 
    { 
    return volume != null ? volume : 0; 
    } 

    public void setVolume(int volume) 
    { 
    this.volume = volume; 
    } 

    public boolean isSSL() 
    { 
    return SSL; 
    } 

    public void setSSL(boolean SSL) 
    { 
    this.SSL = SSL; 
    } 

    public Software getSoftware() 
    { 
    return software; 
    } 

    public void setSoftware(Software software) 
    { 
    this.software = software; 
    } 

    public LicenseType getLicenseType() 
    { 
    return licenseType; 
    } 

    public void setLicenseType(LicenseType licenseType) 
    { 
    this.licenseType = licenseType; 
    } 

    public LicenseClass getLicenseClass() 
    { 
    return licenseClass; 
    } 

    public void setLicenseClass(LicenseClass licenseClass) 
    { 
    this.licenseClass = licenseClass; 
    } 

    public LicenseMetric getLicenseMetric() 
    { 
    return licenseMetric; 
    } 

    public void setLicenseMetric(LicenseMetric licenseMetric) 
    { 
    this.licenseMetric = licenseMetric; 
    } 

    public Location getLocation() 
    { 
    return location; 
    } 

    public void setLocation(Location location) 
    { 
    this.location = location; 
    } 

    public List<LicenseUserAlert> getAlerts() 
    { 
    return alerts; 
    } 

    public void setAlerts(List<LicenseUserAlert> alerts) 
    { 
    this.alerts = alerts; 
    } 
} 

そしてここでは、コントローラのメソッドです

最初の方法はajaxを送信する方法で、もう1つはフォールバック/ ajaxなしでテストする方法です。 AJAXなし は素晴らしい作品ですが、400不正な要求に第一の方法の結果を使用して：私はすでに The request sent by the client was syntactically incorrect().

（...、クラス、メトリック、場所）それは他のエンティティとは何かを持っているようだ を@RequestBodyのparam saveJSONメソッドへのすべてのそれらのエンティティのために追加しようとしました - しかし、それは（同じ結果）ここ

EDIT

そして働いていなかったのですポスト体（これはうまく形成されたJSONオブジェクトであり、だからなぜそれが構文的に間違っているのかわからない）

{ 
    "id":"0", 
    "software.id":"5", 
    "key":"12345", 
    "users":"a, b, c", 
    "licenseType.id":"1", 
    "volume":"2", 
    "from":"", 
    "to":"", 
    "licenseClass.id":"1", 
    "licenseMetric.id":"1" 
} 

Answer 1

私は、データベースからそれをロードすることによってLicenseMetricのインスタンスにIDを表す文字列を変換することができるコンバータを実装するべきだと思います。 （そして他のエンティティのための他のコンバータ）。

次に、パラメータ "licenseMetric.id"を "licenseMetric"に置き換える必要があります。コンバータ

import org.springframework.core.convert.converter.Converter; 

public class StringIdToLicenseMetricConverter implements Converter<String, LicenseMetric> { 
    /** The string that represents null. */ 
    private static final String NULL_REPRESENTATION = "null"; 

    /** Generic dao. */ 
    @Resource 
    private LicenseMetricDao licenseMetricDao; 

    @Override 
    public LicenseMetric convert(final String idString) { 
     if (idString.equals(NULL_REPRESENTATION)) { 
       return null; 
     } 
     try { 
      int id = Integer.parse(idString); 
      return this.licenseMetricDao.getById(id, this.businessClass); 
     } 
     catch NumberFormatException(e) { 
      throw new RuntimeException("could not convert `" + idString + "` to an valid id"); 
     } 
    } 
} 

@see Spring Reference Chapter 6.5.1 Converter SPI