spring MVC中基于hibernate validator的form表单验证

来源：互联网发布：毕向东25天java视频编辑：程序博客网时间：2024/05/19 20:00

首先，在pom.xml中添加hibernate.validator的支持

<!-- hibernate.validator --><dependency><groupId>org.hibernate</groupId><artifactId>hibernate-validator</artifactId><version>4.3.1.Final</version></dependency>

表单提交页面user_add.jsp

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><%@ taglib uri="http://www.springframework.org/tags/form" prefix="form"%><%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>add user</title></head><body><form:form id="form" method="post"modelAttribute="validUserBean">添加用户<form:label path="account">账号：</form:label><form:input path="account" /><form:errors path="account" /><form:label path="password">密码：</form:label><form:input path="password" /><form:errors path="password" /><button type="submit">添加</button><button type="reset">重置</button><c:out value="${show}"></c:out></form:form></body></html>

新建一个用于验证的Bean：ValidUserBean

package com.worldless.admin.controller;import org.hibernate.validator.constraints.Email;import org.hibernate.validator.constraints.Length;import org.hibernate.validator.constraints.NotEmpty;import org.springframework.stereotype.Component;@Component("ValidUserBean")public class ValidUserBean {@NotEmpty@Emailprivate String account;@NotEmpty@Length(min=6,max=16)private String password;public String getAccount() {return account;}public void setAccount(String account) {this.account = account;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}}

来修改controller，

package com.worldless.admin.controller;import javax.validation.Valid;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.validation.BindingResult;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;@Controllerpublic class AdminController {@Autowiredprivate ValidUserBean validUserBean;        //通过url访问新增页面@RequestMapping(value = "admin/add", method = RequestMethod.GET)public String userNew(Model model) {model.addAttribute("validUserBean", validUserBean);return "admin/user_add";}        //点击按钮提交时@RequestMapping(value = "admin/add", method = RequestMethod.POST)public String userAdd(@ModelAttribute("validUserBean") @Valid ValidUserBean validUserBean,BindingResult result, Model model) {if (!result.hasErrors()) {model.addAttribute("show", "ok");}return "admin/user_add";}}

访问页面

输入错误时显示

输入正确时显示