SpringMVC10数据验证详解编程语言

在之前的案例上面！ 引入需要的验证jar包

创建index.jsp页面

 %@ page language="java" import="java.util.*" pageEncoding="UTF-8"% 

String path = request.getContextPath(); 

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

 !DOCTYPE HTML 

 html 

 head 

 base href=" %=basePath% " 

 title My JSP index.jsp starting page /title 

 meta http-equiv="pragma" content="no-cache" 

 meta http-equiv="cache-control" content="no-cache" 

 meta http-equiv="expires" content="0" 

 meta http-equiv="keywords" content="keyword1,keyword2,keyword3" 

 meta http-equiv="description" content="This is my page" 

 !-- 

 link rel="stylesheet" type="text/css" href="styles.css" 

 /head 

 body 

 form action="student/addStudent" method="post" 

 年龄： input type="text" name="age"/ ${ageE} br/ 

 姓名： input type="text" name="userName"/ ${userNameE} br/ 

 电话： input type="text" name="phone" ${phoneE} br/ 

 input type="submit" value="新增"/ 

 /form 

 /body 

 /html 

对应的Student类

import javax.validation.constraints.Max; 

import javax.validation.constraints.Min; 

import javax.validation.constraints.NotNull; 

import javax.validation.constraints.Pattern; 

import javax.validation.constraints.Size; 

import org.hibernate.validator.constraints.NotBlank; 

 * @NotNull 作用在基本数据类型上 

 * @NotBlank 作用在String上 

 * @NotEmpty 作用在集合上 

 * @Min 最小值 

 * @Max 最大值 

 * @Size 字符串的长度 

 * @Pattern 自定义验证规则 

public class Student { 

 @NotNull(message="年龄不能为空") 

 @Min(value=0,message="年龄不能低于{value}") 

 @Max(value=150,message="年龄不能高于{value}") 

 private Integer age; //年龄 

 @NotBlank(message="姓名不能为空") 

 @Size(min=6,max=10,message="长度必须在{min}---{max}之间") 

 private String userName; //姓名 

 @NotBlank(message="手机号不能为空") 

 @Pattern(regexp="^1[345789]//d{9}$",message="手机格式不正确") 

 private String phone; //电话 

 public Integer getAge() { 

 return age; 

 public void setAge(Integer age) { 

 this.age = age; 

 public String getUserName() { 

 return userName; 

 public void setUserName(String userName) { 

 this.userName = userName; 

 public String getPhone() { 

 return phone; 

 public void setPhone(String phone) { 

 this.phone = phone; 

 public Student(Integer age, String userName, String phone) { 

 super(); 

 this.age = age; 

 this.userName = userName; 

 this.phone = phone; 

 public Student() { 

 super(); 


import org.springframework.stereotype.Controller; 

import org.springframework.validation.BindingResult; 

import org.springframework.validation.annotation.Validated; 

import org.springframework.web.bind.annotation.RequestMapping; 

import org.springframework.web.servlet.ModelAndView; 

import sun.util.calendar.BaseCalendar; 

import cn.bdqn.bean.Student; 

@Controller 

@RequestMapping("/student") 

public class StudentController { 

 /** 

 [email protected] :会对student对象中所有标注 注解的属性进行验证！ 

 *BindingResult:如果 验证出现错误 ，就会把错误信息给这个result 

 *result.getFieldError("age").getDefaultMessage() 

 *获取我们设置的错误 信息！ 

 @RequestMapping("/addStudent") 

 public ModelAndView addStudent(@Validated Student student,BindingResult result) { 

 System.out.println("进入了 addStudent"); 

 ModelAndView mv=new ModelAndView(); 

 if (result.hasErrors()) { //出现了验证错误 

 if (result.getFieldError("age")!=null) { //证明age验证有错误 

 mv.addObject("ageE", result.getFieldError("age").getDefaultMessage()); 

 if (result.getFieldError("userName")!=null) { //证明userName验证有错误 

 mv.addObject("userNameE", result.getFieldError("userName").getDefaultMessage()); 

 if (result.getFieldError("phone")!=null) { //证明phone验证有错误 

 mv.addObject("phoneE", result.getFieldError("phone").getDefaultMessage()); 

 mv.setViewName("/index.jsp"); 

 return mv; 

 mv.setViewName("/success.jsp"); 

 return mv; 


 ?xml version="1.0" encoding="UTF-8"? 

 beans xmlns="http://www.springframework.org/schema/beans" 

 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 

 xmlns:context="http://www.springframework.org/schema/context" 

 xmlns:aop="http://www.springframework.org/schema/aop" 

 xmlns:tx="http://www.springframework.org/schema/tx" 

 xmlns:mvc="http://www.springframework.org/schema/mvc" 

 xsi:schemaLocation=" 

 http://www.springframework.org/schema/beans 

 http://www.springframework.org/schema/beans/spring-beans.xsd 

 http://www.springframework.org/schema/context 

 http://www.springframework.org/schema/context/spring-context.xsd 

 http://www.springframework.org/schema/tx 

 http://www.springframework.org/schema/tx/spring-tx.xsd 

 http://www.springframework.org/schema/aop 

 http://www.springframework.org/schema/aop/spring-aop.xsd 

 http://www.springframework.org/schema/mvc 

 http://www.springframework.org/schema/mvc/spring-mvc.xsd 

 !-- 配置springmvc的组件 -- 

 context:component-scan base-package="cn.bdqn.controller"/ 

 !-- 开启 注解的方式-- 

 mvc:annotation-driven validator="myValidator"/ 

 !-- 生成我们的验证器 -- 

 bean id="myValidator" 

 property name="providerClass" value="org.hibernate.validator.HibernateValidator"/ 

 /bean 

 /beans 

 
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/12160.html
 

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