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();
}
}
对应的controller
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文件
<?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" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<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