1、需要导入的jar包:
slf4j-api-1.7.21.jar
validation-api-1.0.0.GA.jar
hibernate-validator-4.0.1.GA.jar
2、访问页面编码：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title></title>
<script type="text/javascript" src="js/jquery-1.8.3.js"></script>
</head>
<body>
<h1>数据校验</h1>
<form action="${pageContext.request.contextPath }/first.do" method="post">
成绩:<input name="score" /> <span>${scoremsg }</span><br/><br/>
姓名:<input name="name"/><span>${namemsg }</span><br/><br/>
电话:<input name="phone"/><span>${phonemsg }</span><br/><br/>
<input type="submit" value="注册"/>
</form>
</body>
</html>
3、applicationContext.xml
<?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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
">
<!-- 配置包扫描器-->
<context:component-scan base-package="cn.happy.controller"></context:component-scan>
<!-- 配置验证器 -->
<bean id="myvalidator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
<property name="providerClass" value="org.hibernate.validator.HibernateValidator"></property>
</bean>
<mvc:annotation-driven validator="myvalidator"/>
</beans>
4、controller控制器
package cn.happy.controller;
import javax.validation.Valid;
import org.springframework.stereotype.Controller;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import cn.happy.entity.UserInfo;
@Controller
public class FirstController {
@RequestMapping("/first.do")
public ModelAndView doFirst(@Valid UserInfo info,BindingResult br){
ModelAndView mv=new ModelAndView();
mv.setViewName("/WELCOME.jsp");
//记录到底是哪个字段验证失败了
//有一个可以侦测到验证错误总数的方法
int errorCount = br.getErrorCount();
if (errorCount>0) {
//证明模型验证失败
FieldError score = br.getFieldError("score");
FieldError name = br.getFieldError("name");
FieldError phone = br.getFieldError("phone");
if (score!=null) {
mv.addObject("scoremsg",score.getDefaultMessage());
}
if (name!=null) {
mv.addObject("namemsg",name.getDefaultMessage());
}
if (phone!=null) {
mv.addObject("phonemsg",phone.getDefaultMessage());
}
mv.setViewName("/index.jsp");
}
//高中 英文版的吻别
return mv ;
}
}
时间： 2024-10-11 00:19:50