[英]Spring Framework's Validation is Not Working with JSR-303 Validation
[英]spring:bind and JSR-303 validation. Unable to show error messages on page when validation fails
我需要協助。 我在做寵物項目時遇到麻煩。 這是一個基於spring mvc的簡單Crud應用程序。 問題是當profile.jsp
輸入驗證失敗時,我不會收到錯誤消息。 我的signup.jsp
代碼基本上相同,但是一切正常。
有我的控制器方法:
@RequestMapping(value = "/profile", method = RequestMethod.GET)
public String getUserProfile(Model model) {
model.addAttribute("userDetailsForm", new UserDetailsFormDTO());
model.addAttribute("passwordForm" ,new PasswordFormDTO());
model.addAttribute("profile", getCurrentUser());
return "profile";
}
@RequestMapping(value = "/profile/details/change", method = RequestMethod.POST)
public String changeUserDetails(@ModelAttribute("userDetailsForm") @Valid UserDetailsFormDTO form,
BindingResult result) {
if(result.hasErrors()){
result.getAllErrors().forEach(log::debug);
return "redirect:/profile";
}
userService.changeUserDetails(getCurrentUser(), form);
return "redirect:/profile?success=details";
}
我正在使用JSR 303驗證:
package org.crud.dto;
import java.io.Serializable;
import javax.validation.constraints.Pattern;
import org.crud.validation.InputValidator;
import org.hibernate.validator.constraints.NotEmpty;
public class UserDetailsFormDTO implements Serializable{
private static final long serialVersionUID = -7603395840362468805L;
@NotEmpty(message="{error.null_form_value}")
@Pattern(regexp=InputValidator.FIRSTNAME_PATTERN, message="{error.name_invalid}")
private String firstName;
@NotEmpty(message="{error.null_form_value}")
@Pattern(regexp=InputValidator.LASTNAME_PATTERN, message="{error.name_invalid}")
private String lastName;
public UserDetailsFormDTO() {}
public UserDetailsFormDTO(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
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;
}
}
在配置文件中,我聲明了下一個bean:
<bean id="validator"
class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"
p:validationMessageSource-ref="messageSource" />
<bean id="messageSource"
class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basename" value="classpath:messages" />
<property name="defaultEncoding" value="UTF-8" />
</bean>
在類路徑上也有兩個帶有我的標簽和錯誤代碼的.properties
文件: messages_ru
和messages_en
。
我的profile.jsp
代碼片段:
<div id="user-details-upd" class="panel panel-info">
<div class="panel-heading">
<h3 class="panel-title">Update user details</h3>
</div>
<div class="panel-body">
<div class="container-fluid">
<form name="userDetailsForm" class="form-horizontal" role="form" method="POST" action="profile/details/change">
<spring:bind path="userDetailsForm"></spring:bind>
<div class="form-group">
<div class="row">
<label for="fname-input" class="col-md-offset-2 col-md-2 control-label">First name:</label>
<div class="col-md-5">
<spring:message code="label.fname_placeholder" var="fNameHolder" />
<spring:bind path="userDetailsForm.firstName">
<input type="text" value="${profile.getFirstName()}" name="<c:out value="${status.expression}"/>" class="form-control" placeholder="${fNameHolder}" required>
<c:if test="${status.error}">
<c:forEach items="${status.errorMessages}" var="error">
<small class="text-danger"> <c:out value="${error}" />
</small>
</c:forEach>
</c:if>
</spring:bind>
</div>
</div>
</div>
<div class="form-group">
<div class="row">
<label for="lname-input" class="col-md-offset-2 col-md-2 control-label">Last name:</label>
<div class="col-md-5">
<spring:message code="label.lname_placeholder" var="lNameHolder" />
<spring:bind path="userDetailsForm.lastName">
<input type="text" value="${profile.getLastName()}" name="<c:out value="${status.expression}"/>" class="form-control" placeholder="${lNameHolder}" required>
<c:if test="${status.error}">
<c:forEach items="${status.errorMessages}" var="error">
<small class="text-danger"> <c:out value="${error}" />
</small>
</c:forEach>
</c:if>
</spring:bind>
</div>
</div>
</div>
<div class="form-group">
<div class="row">
<div class="col-md-offset-4 col-md-5">
<button type="submit" value="Submit" class="btn btn-success">
<span class="glyphicon glyphicon-edit" aria-hidden="true"></span> Update
</button>
</div>
</div>
</div>
</form>
</div>
</div>
</div>
當我在lastName輸入中提交不正確的數據時,來自調試的消息:
2015-08-07 18:52:29 DEBUG UserController:? - Field error in object 'userDetailsForm' on field 'lastName': rejected value [jh]; codes [Pattern.userDetailsForm.lastName,Pattern.lastName,Pattern.java.lang.String,Pattern]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [userDetailsForm.lastName,lastName]; arguments []; default message [lastName],[Ljavax.validation.constraints.Pattern$Flag;@657f42ee,([A-Z�-�][a-zA-Z�-�]*)([\s\'-][A-Z�-�][a-z�-�]*)*]; default message [Name must contain only characters and first letter must be in uppercase]
我不明白,為什么status.errorMessages
出錯時status.errorMessages為空?
任何幫助或建議,表示贊賞。 提前致謝
您正在控制器的請求映射塊內使用重定向。 重定向是發送到瀏覽器的標頭。 瀏覽器啟動重定向,因此您從瀏覽器收到一個全新的請求,並且由於http是無狀態的,因此您丟失了存儲在該先前請求/響應中的任何內容,例如BindingResult。
刪除重定向,並使用字符串轉發到jsp頁面。 您可以為此使用internalviewresolver
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