springmvc 整合数据验证框架 jsr

1、maven

 <dependency>  
        <groupId>javax.validation</groupId>  
        <artifactId>validation-api</artifactId>  
        <version>1.1.0.Final</version>  
    </dependency>  
    <dependency>  
        <groupId>org.hibernate</groupId>  
        <artifactId>hibernate-validator</artifactId>  
        <version>4.2.0.Final</version>  
    </dependency>  
     <dependency>  
        <groupId>org.slf4j</groupId>  
        <artifactId>slf4j-log4j12</artifactId>  
        <version>1.7.7</version>  
    </dependency>  
    <dependency>  
        <groupId>junit</groupId>  
        <artifactId>junit</artifactId>  
        <version>4.11</version>  
        <scope>test</scope>  
    </dependency>  
    <dependency>  
        <groupId>org.aspectj</groupId>  
        <artifactId>aspectjweaver</artifactId>  
        <version>1.8.4</version>  
    </dependency>

2、修改配置文件applicationContex.xml

 <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <property name="providerClass"  value="org.hibernate.validator.HibernateValidator"/>
        <!--不设置则默认为classpath下的 ValidationMessages.properties -->
        <property name="validationMessageSource" ref="validatemessageSource"/>
    </bean>
    <bean id="conversion-service" class="org.springframework.format.support.FormattingConversionServiceFactoryBean" />
    <bean id="validatemessageSource" class="org.springframework.context.support.ReloadableResourceBundleMessageSource">  
        <property name="basename" value="classpath:validatemessages"/>  
        <property name="fileEncodings" value="utf-8"/>  
        <property name="cacheSeconds" value="120"/>  
    </bean>

<mvc:annotation-driven validator="validator" />

validator="validator"是上面定义的id

3、新建validationMessages.properties 文件放到resources文件夹中，内容如下

name.not.empty=1111111

111111内容可自定义

4、新建实体类

package com.db.pojo;

import javax.validation.constraints.NotNull;

import org.hibernate.validator.constraints.NotBlank;
import org.hibernate.validator.constraints.NotEmpty;

public class User {

    @NotEmpty(message="{name.not.empty}")
    private String userName;
    
    
    private String password;
    
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    
}

name.not.empty 为validationMessages.properties里面配置的名称

@NotEmpty代表不能为空，可从网上查询其它验证标签

5、查看controller

    @RequestMapping(value="/userlogin", method = {RequestMethod.GET})
    public String userLogin(Model model){

        if(!model.containsAttribute("contentModel")){
            model.addAttribute("contentModel", new User());
        }
        return "userlogin";
    }
            
    @RequestMapping(value="/userlogin", method = {RequestMethod.POST})
    public String userLogin(@Valid  @ModelAttribute("contentModel")  User user, BindingResult result){
         
            Map<String, Object> map = new HashMap<String, Object>();  
            if(result.hasErrors()){                
                return "/userlogin";
            }  
            else {  
                 return "/index";
            }  
           
    }

6、jsp页面

<%@ page language="java"  pageEncoding="UTF-8" contentType="text/html;charset=UTF-8" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>  
  
<html>  
<head>  
<title>Reservation Form</title>  

<style>  
.error {  
    color: #ff0000;  
    font-weight: bold;  
}  
</style>  
</head>  
  
<body>  
    <form:form method="post" modelAttribute="contentModel" action="userlogin">  
        <form:errors path="*" cssClass="error" />  
        <table>  
            <tr>  
                <td>Name</td>  
                <td><form:input path="userName" />  
                </td>  
                <td><form:errors path="userName" cssClass="error" />  
                </td>  
            </tr>  
            <tr>  
                <td>password</td>  
                <td><form:input path="password" />  
                </td>  
                <td><form:errors path="password" cssClass="error" />  
                </td>  
            </tr>  
      
            <tr>  
                <td colspan="3"><input type="submit" />  
                </td>  
            </tr>  
        </table>  
    </form:form>  
</body>  
</html>

访问http://****/userlogin 点击submit 按钮会提示 1111111（就是validationMessages.properties文件中配置的内容）