@Valid注释无法验证子对象的列表 [英] @Valid annotation is not validating the list of child objects
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问题描述
主要模型类如下:
公共类UserAddressesForm {@不是空的私有字符串firstName;@不是空的私有字符串lastName;私人List< AddressForm>地址；//setter和getters} 公共类AddressForm {@不是空的私有字符串customName;@不是空的私人弦城市；@不是空的私人弦街@不是空的私人String streetHn;@不是空的私有字符串addressCountry;@不是空的私有String postCode;//setter和getters} 我的一个控制器中的端点:
@RequestMapping(值="/up"，方法= RequestMethod.POST)public String completeForm(@Valid @ModelAttribute("userAddressesForm"))UserAddressesForm userAddressesForm，BindingResult结果，HttpServletRequest req){//这里的逻辑} .jsp 页面:
< form:form commandName =" userAddressesForm"action =已注册">< table>< tr>< td class ="formLabels"> form:label path ="firstName">< spring:消息代码="label.name"/></form:label></td>< td>< form:input path ="firstName"/></td>< td>< form:errors path ="firstName"cssClass =错误"；/></td></tr>< tr>< td class ="formLabels"> form:label path ="lastName">< spring:消息代码="label.surname"/></form:label></td>< td>< form:输入路径=姓氏"/></td>< td>< form:errors path ="lastName"cssClass =错误"；/></td></tr></table>< c:forEach items =" $ {userAddressesForm.addresses}"varStatus ="gridRow"< div id =" main_address" ;;class ="address_data_form">< fieldset>< legend>< spring:message code =" label.stepThreeMainAddressInfo"/></legend>< a href =#"class ="deleteItem"</a>< table>< tr>< td class ="formLabels">< spring:消息代码="label.address.custom.name"/></td>< td>< spring:bind path =" addresss [$ {gridRow.index}].customName"><输入类型=输入"名称=< c:out值=" $ {status.expression}"/".id =< c:out value =" $ {status.expression}"/"；value =< c:out value =" $ {status.value}"/"；/>< form:errors path ="$ {status.expression}"//</spring:bind></td></tr>< tr>< td class ="formLabels">< spring:消息代码="label.streetAnStreetHn"；/></td>< td>< spring:bind path =" addresss [$ {gridRow.index}].streetAn"<输入类型=输入"名称=< c:out值=" $ {status.expression}"/".id =< c:out value =" $ {status.expression}"/"；value =< c:out value =" $ {status.value}"/"；/></spring:bind>< spring:bind path =" addresss [$ {gridRow.index}].streetHn"<输入类型=输入"名称=< c:out值=" $ {status.expression}"/".id =< c:out value =" $ {status.expression}"/"；value =< c:out value =" $ {status.value}"/"；>< form:errors path =" addresses [$ {gridRow.index}].streetHn"/></spring:bind></td></tr>< tr>< td class ="formLabels">< spring:message code ="label.postCode"/></td>< td>< spring:bind path =" addresss [$ {gridRow.index}].postCode"><输入类型=输入"名称=< c:out值=" $ {status.expression}"/".id =< c:out value =" $ {status.expression}"/"；value =< c:out value =" $ {status.value}"/"；/></spring:bind></td></tr>< tr>< td class ="formLabels">< spring:消息代码="label.city"/></td>< td>< spring:bind path =" addresss [$ {gridRow.index}].city"<输入类型=输入"名称=< c:out值=" $ {status.expression}"/".id =< c:out value =" $ {status.expression}"/"；value =< c:out value =" $ {status.value}"/"；/>< form:errors path =" addresss [$ {gridRow.index}].city"cssClass =错误"；/></spring:bind></td></tr></table></fieldset></div></c:forEach> 为什么 @Valid 无法验证 List< AddressForm>吗? UserAddressesForm 类中存在的地址
解决方案
您需要使用 @Valid 批注装饰 UserAddressesForm 的 addresses 成员.请参见 JSR 303:Bean验证的3.1.3和3.5.1节.正如我在对问题休眠验证器对象图.(汽车上的乘客列表)
编辑来自 Bean Validation 2.0/Jakarta Bean Validation ..>
Main model classes are as follows :
public class UserAddressesForm {
@NotEmpty
private String firstName;
@NotEmpty
private String lastName;
private List<AddressForm> addresses;
// setters and getters
}
public class AddressForm {
@NotEmpty
private String customName;
@NotEmpty
private String city;
@NotEmpty
private String streetAn;
@NotEmpty
private String streetHn;
@NotEmpty
private String addressCountry;
@NotEmpty
private String postCode;
// setters and getters
}
An endpoint in one of my controllers :
@RequestMapping(value = "/up", method = RequestMethod.POST)
public String completeForm(@Valid @ModelAttribute("userAddressesForm") UserAddressesForm userAddressesForm,
BindingResult result, HttpServletRequest req) {
// logic here
}
A .jsp page :
<form:form commandName="userAddressesForm" action="registered">
<table>
<tr>
<td class="formLabels"><form:label path="firstName">
<spring:message code="label.name" />
</form:label></td>
<td><form:input path="firstName" /></td>
<td><form:errors path="firstName" cssClass="error" /></td>
</tr>
<tr>
<td class="formLabels"><form:label path="lastName">
<spring:message code="label.surname" />
</form:label></td>
<td><form:input path="lastName" /></td>
<td><form:errors path="lastName" cssClass="error" /></td>
</tr>
</table>
<c:forEach items="${userAddressesForm.addresses}" varStatus="gridRow">
<div id="main_address" class="address_data_form">
<fieldset>
<legend><spring:message code="label.stepThreeMainAddressInfo" /></legend>
<a href="#" class="deleteItem"></a>
<table>
<tr>
<td class="formLabels">
<spring:message code="label.address.custom.name" />
</td>
<td>
<spring:bind path="addresses[${gridRow.index}].customName">
<input type="input" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>" />
<form:errors path="${status.expression}"/>
</spring:bind>
</td>
</tr>
<tr>
<td class="formLabels">
<spring:message code="label.streetAnStreetHn" />
</td>
<td>
<spring:bind path="addresses[${gridRow.index}].streetAn">
<input type="input" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>" />
</spring:bind>
<spring:bind path="addresses[${gridRow.index}].streetHn">
<input type="input" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>" >
<form:errors path="addresses[${gridRow.index}].streetHn"/>
</spring:bind>
</td>
</tr>
<tr>
<td class="formLabels">
<spring:message code="label.postCode" />
</td>
<td>
<spring:bind path="addresses[${gridRow.index}].postCode">
<input type="input" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>" />
</spring:bind>
</td>
</tr>
<tr>
<td class="formLabels">
<spring:message code="label.city" />
</td>
<td>
<spring:bind path="addresses[${gridRow.index}].city">
<input type="input" name="<c:out value="${status.expression}"/>"
id="<c:out value="${status.expression}"/>"
value="<c:out value="${status.value}"/>" />
<form:errors path="addresses[${gridRow.index}].city" cssClass="error" />
</spring:bind>
</td>
</tr>
</table>
</fieldset>
</div>
</c:forEach>
Why @Valid is not validating the List<AddressForm> addresses present in UserAddressesForm class ?
解决方案
You need to decorate addresses member of UserAddressesForm with @Valid annotation. See section 3.1.3 and 3.5.1 of JSR 303: Bean Validation. As I explained in my answer to the question Is there a standard way to enable JSR 303 Bean Validation using annotated method, this is the real use of @Valid annotation as per JSR 303.
Edit Example code: Hibernate Validator- Object Graph. (The list of passengers in Car)
Edit From Hibernate Validator 6 Reference doc:
In versions prior to 6, Hibernate Validator supported cascaded validation for a subset of container elements and it was implemented at the container level (e.g. you would use
@Valid private List<Person>to enable cascaded validation forPerson).This is still supported but is not recommended. Please use container element level
@Validannotations instead as it is more expressive.
Example:
public class Car {
private List<@NotNull @Valid Person> passengers = new ArrayList<Person>();
private Map<@Valid Part, List<@Valid Manufacturer>> partManufacturers = new HashMap<>();
//...
}
Also see what's new in Bean Validation 2.0/Jakarta Bean Validation.
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