SpringMVC的自定义校验器 

<bean id="messageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basenames" value="classpath:messages"/>
        <!--指定文件的编码-->
        <property name="fileEncodings" value="utf8"/>
        <!--对资源文件的缓存时间-->
        <property name="cacheSeconds" value="120"/>
    </bean>

以上使spring-web.xml中的配置，其中，由于messages是放在src下的resource文件夹中，所以需要使用classpath作为定位。

package com.ual.web;

import com.ual.model.Employee;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

public class EmployeeValidator implements Validator {
    @Override
    public boolean supports(Class<?> aClass) {
        return Employee.class.isAssignableFrom(aClass);
    }

    @Override
    public void validate(Object o, Errors errors) {
        Employee employee=(Employee)o;
        ValidationUtils.rejectIfEmpty(errors,"name","name.required");
        ValidationUtils.rejectIfEmptyOrWhitespace(errors,"birthDate","birthDate.required"); } }
 @Override
    public void validate(Object o, Errors errors) {
        Employee employee=(Employee)o;
        ValidationUtils.rejectIfEmpty(errors,"name","employee.name.required");
        if(employee.getName()!=null&&employee.getName().equals("123")){
            errors.rejectValue("name","employee.name.NotOne");
        }
       ValidationUtils.rejectIfEmpty(errors,"birthDate","employee.birthDate.required");
    }

 

以上是自定义的validator。

视图中：

<%@page language="java"  contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" isELIgnored="false" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<!DOCTYPE HTML>
<html>
<head>
    <title>Getting Started:Serving Web Content</title>
    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8"/>
</head>
<body>
<div id="global">
    <fieldset>
    <form:form commandName="employee" action="save-employee" method="post">
        <legend> Add an employee</legend>
        <p>
            <form:errors path="name" />
        </p>
        <p>
            <label >Name:</label>
            <form:input path="name" tabindex="1"/>
        </p>
        <p>
            <form:errors path="birthDate" cssClass="error"/>
        </p>
        <p>
            <label>BirthDate</label>
            <form:input path="birthDate" tabindex="2"/>
        </p>
        <p id="buttons">
            <input id="reset" type="reset" tabindex="3"/>
            <input id="submit" type="submit" tabindex="4" value="AddEmployee"/>

        </p>
    </fieldset>
    </form:form>
</div>
</body>
</html>

 此代码 基于dianzan项目。

posted @ 2019-06-01 15:09  Uarealoser  阅读(721)  评论(0)  编辑  收藏  举报