如果验证失败，我的collectCustomerInfo.jsp中没有任何错误，浏览器会显示HTTP状态500。
为什么<form:errors path="streetName" cssClass="text-danger"/>中没有显示错误？
消息：
ERROR [http-nio-8080-exec-19] org.hibernate.internal.SessionImpl$5.mapManagedFlushFailure HHH000346: Error during managed flush [Validation failed for classes [com.rog.webshop.model.user.User] during update time for groups [javax.validation.groups.Default, ]List of constraint violations:[
ConstraintViolationImpl{interpolatedMessage='{Size.User.streetName.validation}', propertyPath=streetName, rootBeanClass=class com.rog.webshop.model.user.User, messageTemplate='{Size.User.streetName.validation}'}]]
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;" charset="utf-8"/>
<link rel="stylesheet"
href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<title>Customer</title>
</head>
<body>
<section>
<div class="jumbotron">
<div class="container">
<h1>Customer</h1>
<p>Customer details</p>
</div>
</div>
</section>
<section class="container">
<form:form modelAttribute="order.user" class="form-horizontal">
<fieldset>
<legend>Customer Details</legend>
<form:errors path="*" cssClass="alert alert-danger" element="div"/>
<div class="form-group">
<label class="control-label col-lg-2" for="firstName">First Name</label>
<div class="col-lg-10">
<form:input id="firstName" path="firstName" type="text" class="form:input-large"/>
<form:errors path="firstName" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="lastName">Last Name</label>
<div class="col-lg-10">
<form:input id="lastName" path="lastName" type="text" class="form:input-large"/>
<form:errors path="lastName" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="email">E-mail</label>
<div class="col-lg-10">
<form:input id="email" path="email" type="text" class="form:input-large"/>
<form:errors path="email" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="phoneNumber">Phone Number</label>
<div class="col-lg-10">
<form:input id="phoneNumber" path="phoneNumber" type="text" class="form:input-large"/>
<form:errors path="phoneNumber" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="doorNo">Door No</label>
<div class="col-lg-10">
<form:input id="doorNo" path="doorNo" type="text"
class="form:input-large"/>
<form:errors path="doorNo" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="streetName">Street Name</label>
<div class="col-lg-10">
<form:input id="streetName" path="streetName" type="text"
class="form:input-large"/>
<form:errors path="streetName" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="areaName">Area Name</label>
<div class="col-lg-10">
<form:input id="areaName" path="areaName" type="text"
class="form:input-large"/>
<form:errors path="areaName" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="state">State</label>
<div class="col-lg-10">
<form:input id="state" path="stateName" type="text"
class="form:input-large"/>
<form:errors path="stateName" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="country">country</label>
<div class="col-lg-10">
<form:input id="country" path="country" type="text"
class="form:input-large"/>
<form:errors path="country" cssClass="text-danger"/>
</div>
</div>
<div class="form-group">
<label class="control-label col-lg-2" for="zipCode">Zip Code</label>
<div class="col-lg-10">
<form:input id="zipCode" path="zipCode" type="text"
class="form:input-large"/>
<form:errors path="zipCode" cssClass="text-danger"/>
</div>
</div>
<input type="hidden" name="_flowExecutionKey" value="${flowExecutionKey}"/>
<div class="form-group">
<div class="col-lg-offset-2 col-lg-10">
<input type="submit" id="btnAdd" class="btn btn-primary"
value="Add" name="_eventId_customerInfoCollected"/>
<button id="btnCancel" class="btn btn-default" name="_eventId_cancel">Cancel</button>
</div>
</div>
</fieldset>
</form:form>
</section>
</body>
</html>
@Valid
@ManyToOne(cascade = CascadeType.MERGE)
private User user;
@Entity
@Table(name = "APP_USER")
public class User implements Serializable
{
private static final long serialVersionUID = 4256810895227136750L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
@NotEmpty
@UserSsoId(groups = ValidateOnCreationOnly.class)
@Size(min = 3, max = 15, message = "{Size.User.ssoId.validation}")
@Column(name = "SSO_ID", unique = true, nullable = false)
private String ssoId;
@NotEmpty
@Email
@Column(name = "EMAIL", nullable = false)
private String email;
// @NotEmpty
// @Size(min = 6, max = 15, message = "{Size.User.password.validation}")
@Column(name = "PASSWORD", nullable = false)
private String password;
@Column(name = "PHONE_NUMBER", nullable = false, length = 15)
private String phoneNumber;
@NotEmpty
@Size(min = 3, max = 15, message = "{Size.User.firstName.validation}")
@Column(name = "FIRST_NAME", nullable = false)
private String firstName;
@NotEmpty
@Size(min = 3, max = 15, message = "{Size.User.lastName.validation}")
@Column(name = "LAST_NAME", nullable = false)
private String lastName;
@NotEmpty
@Column(name = "STATE", nullable = false)
private String state = State.ACTIVE.getState();
@ManyToMany(fetch = FetchType.EAGER)
@JoinTable(name = "APP_USER_USER_PROFILE",
joinColumns = {@JoinColumn(name = "USER_ID")},
inverseJoinColumns = {@JoinColumn(name = "USER_PROFILE_ID")})
private Set<UserProfile> userProfiles = new HashSet<UserProfile>();
@Size(min = 3, max = 50, message = "{Size.User.streetName.validation}")
@Column(name = "STREET_NAME", length = 50)
private String streetName;
@Min(value = 1, message = "{Min.User.doorNo.validation}")
@Column(name = "DOOR_NO")
private String doorNo;
@Size(min = 3, max = 20, message = "{Size.User.areaName.validation}")
@Column(name = "AREA_NAME", length = 20)
private String areaName;
@Size(min = 3, max = 50, message = "{Size.User.state.validation}")
@Column(name = "STATE_NAME", length = 50)
private String stateName;
@Size(min = 3, max = 25, message = "{Size.User.country.validation}")
@Column(name = "COUNTRY", length = 25)
private String country;
@Size(min = 2, max = 10, message = "{Size.User.zipCode.validation}")
@Column(name = "ZIP_CODE", length = 10)
private String zipCode;
getters setters over here
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="validationMessageSource" ref="messageSource"/>
</bean>
<!--WEBFLOW CONFIG-->
<webflow-config:flow-executor id="flowExecutor"
flow-registry="flowRegistry"/>
<webflow-config:flow-builder-services id="flowBuilderServices" validator="validator" />
<webflow-config:flow-registry id="flowRegistry"
base-path="WEB-INF/flows">
<webflow-config:flow-location path="/checkout/checkout-flow.xml"
id="checkout"/>
</webflow-config:flow-registry>
<view-state id="collectCustomerInfo" model="order">
<binder>
<binding property="user.firstName" required="true" />
<binding property="user.lastName" required="true" />
<binding property="user.email" required="true" />
<binding property="user.phoneNumber" required="true" />
<binding property="user.doorNo" required="true" />
<binding property="user.streetName" required="true" />
<binding property="user.areaName" required="true" />
<binding property="user.stateName" required="true" />
<binding property="user.country" required="true" />
<binding property="user.zipCode" required="true" />
</binder>
<transition on="customerInfoCollected" to="updateCustomerAddress"/>
</view-state>