spring MVC中基于hibernate validator的form表单验证
2013-02-21 10:41
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首先,在pom.xml中添加hibernate.validator的支持
表单提交页面user_add.jsp
新建一个用于验证的Bean:ValidUserBean
来修改controller,
访问页面
输入错误时显示
输入正确时显示
<!-- 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 @Email private 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; @Controller public class AdminController { @Autowired private 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
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